Switch Command Reference

This chapter describes each command in the Catalyst 2900 Command Line Interface (CLI). Use these commands to configure and maintain the Catalyst 2900.

Command Line Interface Overview

Table 5-1 lists command aliases that have been defined for ease of use. Like regular commands, aliases are not case sensitive. Unlike regular commands, however, some aliases cannot be abbreviated.

Table 5-1: Command Aliases

Alias	Command
?	help
batch	configure
di	show
earl	cam
exit	quit
logout	quit

Table 5-2 lists all the switch commands in the Catalyst 2900 CLI.

Table 5-2: Command Line Interface Commands

Command	Description	Mode
clear alias	Clears aliases of commands.	P¹
clear arp	Clears ARP table entries.	P
clear cam	Clears CAM table entries.	P
clear config	Clears configuration and resets the system.	P
clear counters	Clears MAC and Port counters.	P
clear help	Shows the clear command menu.	P
clear ip alias	Clears aliases of IP Addresses.	P
clear ip route	Clears IP routing table entries.	P
clear log	Clears the system error log.	P
clear snmp trap	Clears SNMP trap receiver address.	P
clear spantree portvlanpri	Clears spantree port vlan priority.	P
clear trunk	Clears trunks.	P
clear vlan	Clears a VLAN.	P
clear vtp	Clear VTP statistics.	P
configure	Downloads a configuration file from the network and executes each command in the file.	P
disable	Returns the console interface to normal mode.	P
disconnect	Closes an active console port or Telnet session.	P
download	Copies a software image from a specified host to the designated module's flash memory.	P
download serial	Copies software images to the supervisor card or Flash memory through a serial port.	P
enable	Activates privileged mode.	N²
help	Lists the top-level commands available in the current mode.	N, P
history	Shows the contents of the history substitution buffer.	N
ping	Sends ICMP echo request packets to another node on the network.	N
quit	Exits the administration interface session.	N
reset	Sets the system to its default values or configures the system as an individual module.	P
set alias	Creates a shorthand name (alias) for the command.	P
set arp	Sets an ARP table entry .	P
set bridge help	Lists the set bridge commands	P
set bridge ipx 8022toether	Sets the default mode for translating IPX frames from FDDI 802.2 to Ethernet	P
	Sets the default protocol for translating IPX frames from Ethernet 802.3 RAW to FDDI	P
		P
set cam	Sets a CAM table entry.	P
set cdp disable	Deactivates Cisco Discovery Protocol information.	P
set cdp enable	Sets Cisco Discovery Protocol information.	P
set cdp interval	Sets the number of seconds between Cisco Discovery Protocol messages.	P
set help	Sets the LER-alarm value.	P
set fddi cutoff	Sets the LER-cutoff value	P
set fddi alarm	Lists the set fddi commands	P
set fddi tlmin	Sets the TL_MIN value for an FDDI port	P
set fddi tnotify	Sets the T_Notify timer value for an FDDI port	P
set fddi treq	Sets the TRequest value for an FDDI MAC	P
set fddi userdata	Sets the user-data string in the SMT MIB of an FDDI module	P
set enablepass	Sets the privileged password.	P
set help	Shows the set command menu.	N
set interface	Sets a network interface configuration.	P
set ip alias	Sets an alias for an IP Address.	P
set ip fragmentation	Enables or disables the fragmentation of IP packets bridged between Ethernet networks.	P
set ip help	Lists the set ip commands.	P
set ip redirect	Enables or disables ICMP redirect messages for the switch.
set ip route	Adds IP addresses or aliases to the IP routing table.	P
set ip unreachable	Enables or disables ICMP unreachable messages for the switch.	P
set length	Sets the number of lines in the terminal display screen.	N
set logout	Sets the number of minutes before automatic logout.	P
set module disable	Disables a module.	P
set module enable	Enables a module.	P
set module help	Shows the set module command menu.	P
set module name	Sets module name.	P
set password	Sets the console password.	P
set port disable	Disables a port.	P
set port duplex	Sets port transmission type (full/half duplex).	P
set port enable	Enables a port.	P
set port help	Shows the set port command menu.	P
set port level	Sets a port's priority level (normal/high).	P
set port name	Sets a port's name.	P
set port speed	Sets a port's speed.	P
set port trap	Sets the port up/down trap (enable/disable).	P
set prompt	Sets the CLI prompt.	P
set snmp community	Sets SNMP community string.	P
set snmp help	Shows the set snmp command menu.	P
set snmp rmon	Sets the SNMP RMON.	P
set snmp trap	Sets the SNMP Remote Monitoring (RMON) support (enable\|disable).	P
set span	Sets the switch port analyzer.	P
set spantree disable	Disables spanning tree.	P
set spantree enable	Enables spanning tree.	P
set spantree fwddelay	Sets spantree forward delay.	P
set spantree hello	Sets spantree hello time.	P
set spantree help	Shows the set spantree command menu.	P
set spantree maxage	Sets spantree maximum aging time.	P
set spantree portcost	Sets spantree port cost.	P
set spantree portfast	Sets the spantree port fast start.	P
set spantree portpri	Sets spantree port priority.	P
set spantree portvlanpri	Sets the spantree port vlan priority.	P
set spantree priority	Sets spantree priority.	P
set system baud	Sets the console port baud rate.	P
set system contact	Sets the system contact.	P
set system help	Shows the set system command menu.	P
set system location	Sets the system location.	P
set system modem	Sets modem control (enable/disable).	P
set system name	Sets the system name.	P
set time	Sets the system time.	P
set trunk	Sets ports to be trunks.	P
set vlan	Sets virtual LANs on ports.	P
set vtp	Sets Virtual Truck information.	P
show alias	Shows aliases for commands.	N
show arp	Shows the ARP table .	N
show cam	Shows the CAM table.	N
show cdp	Shows Cisco Discovery Protocol information.	N
show config	Shows the system configuration.	P
show fddi	Displays the settings of the FDDI/CDDI modules	N
show fddicam	Displays the CAM table for the FDDI/CDDI modules	N
show fddi	Shows the show command menu	N
show flash	Lists flash code information.	P
show help	Lists and describes the available show commands.	N
show interface	Shows network interfaces.	N
show ip alias	Shows aliases for IP Addresses.	N
show ip help	Lists the show ip commands.	N
show ip route	Displays the IP routing table entries.	N
show log	Displays the system error log.	P
show mac	Shows MAC information.	N
show module	Shows mbuf and malloc statistics.	P
show module	Shows module information.	N
show netstat	Shows network statistics.	N
show port	Shows port information.	N
show snmp	Shows SNMP information.	N
show span	Shows switch port analyzer information.	N
show spantree	Shows spantree information.	N
show system	Shows system information.	N
show test	Shows results of diagnostic tests.	N
show time	Shows the current time.	N
show trunk	Shows trunk information.	N
show users	Shows active Admin sessions.	N
show version	Shows version information.	N
show vlan	Shows virtual LAN information.	N
show vtp	Shows Virtual Trunk Protocol (VTP) information.	N
show vtp help	Displays Virtual Trunk Protocol commands.
slip	Attaches or detaches SLIP from the console port.	P
telnet	Starts a telnet connection to a remote host.	P
test help	Shows the test command menu.	P
test snmp trap	Sends trap message to SNMP trap receivers.	P
upload	Uploads a code image to a network host.	P
wait	Pauses for a specified number of seconds.	N
write	Uploads the current configuration to a host or displays it on the terminal.	P

¹ P = Privileged mode.
² N = Normal mode.

clear alias

Use the clear alias command to clear the shorthand versions of commands.

clear alias all
clear alias name

Syntax Description

all	Identifies every alternate identifier previously created.
name	Identifies the alternate identifier of the command.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to erase the alias called arpdel:

Console> (enable) clear alias arpdel
Command alias deleted.
Console> (enable) clear alias all
Command alias table cleared.
Console> (enable)

Related Commands

session
show alias

clear config

Use the clear config command to clear the system or module configuration information stored in NVRAM.

clear config all
clear config mod_num

Syntax Description

all	Specifies all modules and system information, including the IP address.
mod_num	The number of the module.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to delete the configuration information stored in NVRAM on module 2:

Console> (enable) clear config 2
This command will clear module 2 configuration.
Do you want to continue (y/n) [n]? y
..............................
Module 2 configuration cleared.
Console> (enable) clear config 1
This command will clear module 1 configuration.
Do you want to continue (y/n) [n]? y
......
Module 1 configuration cleared.
host%
Console> (enable) clear config all
This command will clear all configuration in NVRAM.
Do you want to continue (y/n) [n]? y
...........................................
Connection closed by foreign host
host%

clear counters

Use the clear counters command to clear MAC and port counters.

clear counters

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to reset MAC and port counters to zero:

Console> (enable) clear counters
MAC and Port counters cleared.
Console> (enable)

clear spantree portvlanpri

Use the clear spantree portvlanpri command to reset the spantree port vlan priority.

clear spantree portvlanpri mod_num/port_num vlans

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to reset the spantree port priority:

Console> (enable) clear spantree portvlanpri ?
Usage: clear spantree portvlanpri  
Console> (enable) clear spantree portvlanpri 1/2 23-40
Port 1/2 vlans 3,6-20,23-1000 using portpri 32
Port 1/2 vlans 1-2,4-5,21-22 using portpri 30

Related Commands

set spantree portvlanpri
show spantree

clear trunk

Use the clear trunk command to reset trunk ports to bridge ports or to clear partial information in the trunk table.

clear trunk mod_num/port_num [ vlans ]

Syntax Description

all	Specifies all trunks.
mod_num	The number of the module.
port_num	The number of the port.
vlans	(Optional) Identifies one or more VLANs.

Default

If VLANs are specified, they are removed from the list of allowed VLANs on the trunk. If you do not specify a VLAN range, the mode is set to auto for Dynamic Interswitch Link (DISL) trunk ports and off for other trunk ports. Refer to the set trunk command for more information about auto and off modes.

Command Mode

Privileged.

Usage Guidelines

If VLANs are specified, only the specified VLANs are cleared from the trunk port table. When all VLANs in the trunk port are cleared, the port is automatically reset to a regular bridge port. Default VLANs cannot be cleared on the trunk.

Example

The following example shows how to clear the trunk for module 1, port 2:

Console> (enable) clear trunk  1/2
Clear Trunk 1/2 100-200
Port 1/2 mode set to auto
VLAN(s) 100-200 cleared from port 1/2
Console> (enable)

Related Commands

set trunk
show trunk

clear vlan

Use the clear vlan command to delete an existing vlan from a management domain.

clear vlan vlan_num

Syntax

vlan_num

Identifies a VLAN.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to clear an existing vlan from a management domain:

Console> (enable) clear vlan ?
Usage: clear vlan  
(vlan)num should be in the range of 2..1000)
Console> (enable) clear vlan 4
This command will de-activate all ports on vlan 4
in the entire management domain
Do you want to continue(y/n) [n]?y
VTP: VLAN 4 deletion succesful

Related Commands

set vlan
show vlan

clear vtp

Use the clear vtp command statistics to clear the vtp statistics.

clear vtp statistics

Syntax Description

statistics

Specifies the statistics.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

The term VTP represents the Virtual Trunk Protocol.

Example

Console> (enable) clear vtp ?
Usage: clear vtp statistics
Console> (enable) clear vtp statistics
vtp statistics cleared.
Console> (enable)

Related Commands

set vtp
set vtp domain
set vtp statistics
show vtp
show vtp domain
show vtp help
show vtp statistics

conf igure

Use the configure command to download a configuration file from the network and execute each command in that file.

configure network
configure host file

Syntax Description

network	Causes interactive prompting for the host and the file.
host	The IP address or IP alias of the host.
file	The name of the file.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

Refer to the "Creating a Configuration File" appendix for information about constructing a configuration file to be downloaded using the configure command.

Example

Following is a sample file called system5.cfg in the tftpboot directory:

begin
show time
set ip alias conc7 198.133.219.207
set ip alias montreux 198.133.119.42
set ip alias cres 192.122.174.42
set prompt system5>
set password
#empty string old password
pingpong
pingpong
end
#

Each line contains a command, except lines that begin with ! or #.

The following example shows how to download the configuration file called system5.cfg from the 192.122.174.42 host:

Console> (enable) configure 192.122.174.42 system5.cfg
Configure using system5.cfg from cres (y/n) [n]? y
/
Done.  Finished Network Download.  (446 bytes)
>> show time
Wed Feb 22 1995, 17:42:50
>> set ip alias conc7 198.133.219.207
IP alias added.
>> set ip alias montreux 198.133.219.40
IP alias added.
>> set ip alias cres 192.122.174.42
IP alias added.
>> set prompt system5>
>> set password
Enter old password: 
Enter new password: pingpong
Retype new password: pingpong
Password changed.
system5> (enable)

Related Command

show config

dis able

Use the disable command to return the console interface to normal mode.

disable

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to return the console to normal mode:

Console> (enable) disable
Console>

Related Command

enable

disconnect

Use the disconnect command to close an active console port or Telnet session.

disconnect console
disconnect ip_addr

Syntax Description

console	The active console port.
ip_addr	The IP address or IP alias.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

If multiple sessions from the same IP address exist, the disconnect command will check if the current process is also from the same IP address. If it is not, all Telnet sessions from the specified IP address are disconnected. If it is, all sessions, other than the current session, are disconnected. The system prompts whether to disconnect the current Telnet session. You can answer n and remain connected or answer y and be disconnected.

Example

The following example shows how to close a Telnet session with a host with IP address 198.134.214.4:

Console> (enable) disconnect 198.134.214.4
Telnet session from 198.134.214.4 disconnected. (1)
Console> (enable) disconnect console
Console session disconnected.

Related Command

telnet

download

Use the download command to copy a software image from a specified host to a designated module's Flash memory.

download host file [ module_num ]

Syntax Description

host	The name or IP address of host.
file	The name of file to be downloaded.
module_num	(Optional) Number of the module.

Default

If a module number is not specified, the default is module 1.

Command Mode

Privileged.

Usage Guidelines

The Catalyst 2900 supports two ways to download new code to the processors: TFTP network download through any network port, and kermit serial download through the EIA/TIA-232 Console port.This command downloads code to the module's Flash memory. Catalyst 2900 software will reject an image if it is not a valid image for the module.

Example

The following example shows how to download the c2900__spvxx.bin file, where xx is the software version number, from the mercury host:

Console> (enable) download mercury c2900_spv11.bin
Download image c2900_spv11.bin from mercury to module 1FLASH (y/n) [n]? y
\
Done.  Finished Network Download.  (100604 bytes)
host%
intelquery: id=0x89898989 code=0xa2a2a2a2
FLASH on Synergy:
Type            Address             Location
Intel 28F008    20000000            NMP (P3) 4MB SIM
erase(b=14, c=1): block(s): 14 Erase done
Programming Flash:  Flash Programming Complete
erase(b=2, c=4): block(s): 2 3 4 5 Erase done
Programming Flash:  Flash Programming Complete
System must be reset to run new image

The following example shows how to download the acpflash_1111.bbi code from the mercury host:

Console> (enable) download mercury acpflash_1111.bbi 3
This command will reset Module 3.
Download image acpflash_1111.bbi from mercury to Module 3 FLASH (y/n) [n]? y
/
Done.  Finished network download.  (1964012 bytes)
Console> (enable)

Related Commands

reset
show flash
show version
upload

download serial

Use the download serial command to copy software images to the supervisor card or Flash memory through a serial port.

download serial

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

This command uses Kermit protocol through the serial EIA/TIA-232 console port. The download serial command is not allowed from a Telnet session.

Caution After starting the serial download using Kermit, do not attempt to abort the serial download by typing Ctrl-C. This command will interrupt the download process and leave the switch in an undesirable state. However, if this occurs, reboot the switch.

Example

In the following example, a tty port is connected to the CLI port on the Catalyst 2900. Following is a sample session showing a connection to a remote terminal from a Sun workstation and the use of the serial download command to copy a software image to the supervisor card:

[At local Sun workstation]
host% kermit
C-Kermit 5A(172) ALPHA, 30 Jun 91, SUNOS 4.0 (BSD)
Type ? or 'help' for help
C-Kermit>set line /dev/ttyb
C-Kermit>c     
Connecting to /dev/ttyb, speed 9600.
The escape character is ^ (ASCII 28).
Type the escape character followed by C to get back,
or followed by ? to see other options.
 
Console> enable
Enter Password: 
Console> (enable) set system baud 19200
^\C
[Back at local sun workstation]
C-Kermit>set speed 19200
/dev/ttyb, 19200 bps
C-Kermit>c
Connecting to /dev/ttyb, speed 19200.
The escape character is ^ (ASCII 28).
Type the escape character followed by C to get back,
or followed by ? to see other options.
 
Console> (enable) download serial
Download Supervisor image via console port (y/n) [n]? y
Concentrator Boot ROM (Ver 1.00)
 
Waiting for DOWNLOAD!!
Return to your local Machine by typing its escape sequence
Issue Kermit send command from there[ Send 'Filename']
 
^\C
[Back at Local System]
C-Kermit>send c2900___xx.bin
                          SF
c2900___xx.bin => c2900___XX.BIN, Size: 1233266
 
X to cancel file,  CR to resend current packet
Z to cancel group, A for status report
E to send Error packet, Ctrl-C to quit immediately: ..........................
...............................................................................

...... [OK]
ZB
C-Kermit> quit
host%

Related Commands

set baud
set line
set speed

enable

Use the enable command to activate Privileged. mode. In privileged mode, certain commands are available, and certain displays have extra information.

enable

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

The designation (enable) indicates that the system is in privileged mode and that privileged commands can be entered.

Example

The following example shows how to enter privileged mode:

Console> enable
Enter password:
Console> (enable)

Related Command

disable

help

Use the help command to list the top-level commands available in the current mode.

help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal and Privileged.

Usage Guidelines

In normal mode, the help command provides a list of the top-level commands available in normal mode. In privileged mode, this command provides a list of the top-level commands available in privileged mode.

Example

The following example shows how to list the top-level commands available in normal mode:

Console> (enable) help
Commands:
----------------------------------------------------------------------
clear               Clear, use 'clear help' for more info
configure           Configure system from terminal/network
disable             Disable privileged mode
disconnect          Disconnect user session
download            Download code to a processor
enable              Enable privileged mode
help                Show this message
history             Show contents of history substitution buffer
ping                Send echo packets to hosts
quit                Exit from the Admin session
reset               Reset system or module
session             Tunnel to ATM module
set                 Set, use 'set help' for more info
show                Show, use 'show help' for more info
slip                Attach/detach Serial Line IP interface
telnet              Telnet to a remote host
test                Test, use 'test help' for more info
upload              Upload code from a processor
wait                Wait for x seconds
write               Write system configuration to terminal/network
Console> (enable)

The following example shows how to list the top-level commands available in privileged mode:

Console> (enable) help
Commands:
----------------------------------------------------------------------
clear               Clear, use 'clear help' for more info
configure           Configure system from terminal/network
disable             Disable privileged mode
disconnect          Disconnect user session
download            Download code to a processor
enable              Enable privileged mode
help                Show this message
history             Show contents of history substitution buffer
ping                Send echo packets to hosts
quit                Exit from the Admin session
reset               Reset system or module
session             Tunnel to ATM module
set                 Set, use 'set help' for more info
show                Show, use 'show help' for more info
slip                Attach/detach Serial Line IP interface
telnet              Telnet to a remote host
test                Test, use 'test help' for more info
upload              Upload code from a processor
wait                Wait for x seconds
write               Write system configuration to terminal/network
Console> (enable)

history

The history command shows the contents of the history substitution buffer. Refer to the "Configuring the Software" chapter for details about the history substitution buffer.

history

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

The history buffer size is fixed at 20 commands.

Example

In the following example, the history command lists the contents of the history substitution buffer:

Console> history
       1 help
       2 history
Console> !2
Console> history
       1 help
       2 history
       3 history

ping

Use the ping command to send Internet Control Message Protocol (ICMP) echo request packets to another node on the network.

ping host
ping -s host [ packet_size ] [ packet_count ]

Syntax Description

-s	Causes ping to send one datagram per second, printing one line of output for every response received. The ping command does not return any output when no response is received.
host	The IP address or IP alias of the host.
packet_size	(Optional) The number of bytes in a packet, from 1 to 1514 bytes; the default is 56 bytes. The actual packet size will be eight bytes larger because the switch adds header information.
packet_count	(Optional) The number of packets to send.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

Press Ctrl-C to stop pinging.

Following are sample results of the ping command:

Normal response--The normal response occurs in one to ten seconds, depending on network traffic.
Destination does not respond--If the host does not respond, a no answer message appears in ten seconds.
Destination unreachable--The gateway given in the route table for this destination indicates that the destination is unreachable.
Network or host unreachable--The switch found no corresponding entry in the route table.

Example

The following example shows how to ping a host with IP alias elvis a single time, then ping it once per second until you press Ctrl-C to stop pinging:

Console> ping elvis
elvis is alive
Console> ping -s elvis
ping elvis: 56 data bytes
64 bytes from elvis: icmp_seq=0. time=11 ms
64 bytes from elvis: icmp_seq=1. time=8 ms
64 bytes from elvis: icmp_seq=2. time=8 ms
64 bytes from elvis: icmp_seq=3. time=7 ms
64 bytes from elvis: icmp_seq=4. time=11 ms
64 bytes from elvis: icmp_seq=5. time=7 ms
64 bytes from elvis: icmp_seq=6. time=7 ms
^C
----elvis PING Statistics----
7 packets transmitted, 7 packets received, 0% packet loss
round-trip (ms)  min/avg/max = 7/8/11
Console>

Related Commands

set ip route
set interface
show interface
show ip route

quit

Use the quit command to exit an CLI session.

quit

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

The exit and logout commands perform the same function as the quit command.

Example

The following example shows how to close a connection with the CLI:

Console> quit
Connection closed by foreign host.
host%

Related Commands

exit
logout

reset

Use the reset command to restart the system or an individual line card.

reset system
reset mod_num

Syntax Description

system	Resets the system to its default values.
mod_num	The number of the module.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

If a no module number or module 1 is specified, the command resets the entire system.

Example

The following example shows how to reset module 2:

Console> (enable) reset 2
This command will reset module 2.
Do you want to continue (y/n) [n]? y
Resetting module 2...
Console> (enable)

set alias

Use the set alias command to define shorthand versions of commands.

set alias name command [ parameter ] [ parameter ]

Syntax Description

name	The alias being created.
command	The command for which the alias is being created.
parameter	(Optional) Parameters that apply to the command for which an alias is being created. See the specific command for information about parameters that apply.

Default

No aliases configured.

Command Mode

Privileged.

Usage Guidelines

The name all cannot be defined as an alias.

Example

The following example shows how to set arpdel as the alias for the clear arp command:

Console> (enable) set alias arpdel clear arp
Command alias added.
Console> (enable)

Related Commands

clear alias
show alias

set arp

The set arp command adds entries into the Address Resolution Protocol (ARP) table and sets the ARP aging time for the table.

set arp agingtime agingtime
set arp ip_addr hw_addr

Syntax Description

agingtime	The number of seconds (from 1 to 1000000) that entries will remain in the ARP table before being deleted. Setting this value to 0 disables aging.
ip_addr	The IP address or IP alias of the physical unit.
hw_addr	The MAC address of the physical unit.

Default

No ARP table entries exist, and ARP aging is set to 1200 seconds.

Command Mode

Privileged.

Example

The following example shows how to set the aging time for the ARP table to 1800 seconds and add an entry for a physical unit with IP address 198.133.219.232 and a MAC address of 00-00-0c-40-0f-bc to the ARP table:

Console> (enable) set arp agingtime 1800
ARP aging time set to 1800 seconds.
Console> (enable) set arp 198.133.219.232 00-00-0c-40-0f-bc
ARP entry added.
Console> (enable)

Related Commands

clear arp
show arp

set cam

Use the set cam command to add entries into the Content Addressable Memory (CAM) table and to set the aging time for the table. The default configuration has a local MAC address(es), spanning-tree address (01-80-c2-00-00-00), and CDP multicast address for destination port 1/3 (the NMP).

Note Although this command refers to the CAM table, the table is an EARL table.

set cam agingtime vlan agingtime
set cam {dynamic | static | permanent} unicast_mac mod/ports [ vlan ]
set cam {dynamic | static | permanent} multicast_mac mod/ports [ vlan ]

Syntax Description

vlan	The number of the virtual LAN. When setting aging time and when setting CAM entries to dynamic, static, or permanent for a trunk port, the VLAN number is required. Otherwise, the VLAN number is optional.
agingtime	(Optional) The number of seconds (0-1000000) that entries will remain in the table before being deleted.
dynamic	Specifies that entries are subject to aging.
static	Specifies that entries are not subject to aging. Static (nonpermanent) entries will remain in the EARL table until the system is reset.
permanent	Specifies that static (permanent) entries will be stored in NVRAM until they are removed by the clear cam or clear config command.
unicast_mac	The MAC address of the destination host used for a unicast.
multicast_ mac	The MAC address of the destination host used for a multicast.
mod	The number of the module.
ports	The numbers of the ports.
multicast_mac	The MAC address of the destination host used for a multicast.

Default

The default aging time for all configured VLANs is 300 seconds. Setting aging time to 0 disables aging.

Command Mode

Privileged.

Usage Guidelines

If the given MAC address is a multicast (xn-xx-xx-xx-xx-xx where n is xxx1 [that is, the least significant bit of the most significant byte is set to 1]) or broadcast address (ff-ff-ff-ff-ff-ff) and multiple ports are specified, the ports must all be in the same VLAN. If the given address is a unicast address and multiple ports are specified, the ports must be in different VLANs.

Example

The following example shows how to set the CAM table aging time to 300 seconds; how to add a unicast entry to the table for module 2, port 9; and how to add a permanent multicast entry to the table for module 1, port 1, and module 2, ports 1, 3, and 8 through 12.

Console> (enable) set cam agingtime 1 300
CAM table aging time set.
Console> (enable) set cam static 00-00-0c-a0-03-fa 2/9
Static unicast entry added to CAM table.
Console> (enable) set cam permanent 01-40-0b-a0-03-fa 1/1,2/1,2/3,2/8-12
Permanent multicast entry added to CAM table.
Console> (enable)

Related Commands

clear cam
show cam

set cdp disable

Use the set cdp disable command to disable the Cisco Discovery Protocol (CDP) information display on specified ports. If enable or disable is not specified, the current setting remains active.

set cdp disable mod_num/port_num
set cdp disable all

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
all	Disable the Cisco Discovery Protocol (CDP) information on all ports.

Default

The default system configuration has CDP enabled with a message interval of 60 seconds for every port.

Command Mode

Privileged.

Usage Guidelines

When enabling or disabling CDP and the message interval is not specified, the existing message interval is used.

Example

The following example shows how to disable the CDP message display for port 1 on module 2:

Console> (enable) set cdp 2/1 disable
Port 2/1 CDP disabled.
Console> (enable)

Related Commands

set cdp enable
set cdp interval

set cdp enable

Use the set cdp enable command to enable the Cisco Discovery Protocol (CDP) information display. If enable or disable is not specified, the current setting remains active.

set cdp enable mod_num/port_num
set cdp enable all

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
all	Enable the Cisco Discovery Protocol (CDP) information on all ports.

Default

The default system configuration has CDP enabled with a message interval of 60 seconds for every port. When you use the clear config command, the number of lines in the terminal display screen is reset to the factory default of 100.

Command Mode

Privileged.

Usage Guidelines

When enabling or disabling CDP and the message interval is not specified, the existing message interval is used.

Example

The following example shows how to enable the CDP message display for port 1 on module 2:

Console> (enable) set cdp 2/1 enable
Port 2/1 CDP enabled.
Console> (enable)

Related Commands

set cdp disable
set cdp interval

set cdp interval

Use the set cdp interval command to set the message interval for Cisco Discovery Protocol (CDP) on each port.

set cdp interval mod_num/port_num interval
set cdp interval all

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
interval	The number of seconds (5-900) the system waits before sending a message.
all	Set the message interval for Cisco Discovery Protocol (CDP) information on all ports.

Default

The default system configuration has CDP enabled with a message interval of 60 seconds for every port.

Command Mode

Privileged.

Usage Guidelines

You can set the message interval within the range of 5 to 900 seconds.

Example

The following example shows how to set the CDP message interval for port 10 on module 2 to
60 seconds:

Console> (enable) set cdp interval
Usage: set cdp interval all 
       set cdp interval  
      (interval = 5..900 seconds.)
Console> (enable) set cdp interval 2/10 60
CDP message interval set to 60 seconds for port 2/10.
Console> (enable)

Related Commands

set cdp disable
set cdp enable

set enablepass

The set enablepass command changes the password for the privileged level on the CLI.

set enablepass

Syntax Description

This command has no arguments or keywords.

Default

The default configuration does not have enable password configured.

Command Mode

Privileged.

Usage Guidelines

The command prompts you for the old password. If the password is valid, the command then prompts you to enter a new password twice. A zero length password is allowed.

Example

The following example shows how to establish a new password:

Console> (enable) set enablepass
Enter old password:
Enter new password:
Retype new password: 
Password changed.
Console> (enable)

Related Commands

enable
set password

set help

Use the set help command to list the set commands with brief descriptions of their functions.

set help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal and Privileged.

Usage Guidelines

In normal mode, the set help command lists the set commands available in normal mode. In privileged mode, the set help command lists the set commands available in privileged mode.

Example

The following example shows how to list the set commands available in normal mode:

Console> set help
Commands:
------------------------------------------------------------------------------
set help            Show this message
set length          Set number of lines in display (0 to disable 'more')
Console>

The following example shows how to list the set commands available in privileged mode:

Console> (enable) set help
Set commands:
------------------------------------------------------------------------
set alias           Set alias for command
set arp             Set ARP table entry
set bridge          Set bridge, use 'set bridge' for more info
set cam             Set CAM table entry
set cdp             Set cdp, use 'set cdp help' for more info
set enablepass      Set privilege mode password
set help            Show this message
set interface       Set network interface configuration
set ip              Set IP, use 'set ip help' for more info
set length          Set number of lines in display (0 to disable 'more')
set logout          Set number of minutes before automatic logout
set module          Set module, use 'set module help' for more info
set password        Set console password
set port            Set port, use 'set port help' for more info
set prompt          Set prompt
set snmp            Set SNMP, use 'set snmp help' for more info
set span            Set switch port analyzer
set spantree        Set spantree, use 'set spantree help' for more info
set system          Set system, use 'set system help' for more info
set time            Set time
set trunk           Set trunk ports
set vlan            Set Virtual LAN information
set vtp             Set Virtual Trunk Information
Console> (enable)

set interface

Use the set interface command to configure network interfaces.

set interface sc0/sl0 {up | down}
set interface sc0 [vlan vlan_num ] [ip_address [ netmask [ broadcast ]]]
set interface sl0 slip_address dest_address

Syntax Description

sc0	Indicates in-band interface.
sl0	Indicates SLIP interface.
up	Brings the interface into operation.
down	Brings the interface out of operation.
vlan_num	Identifies the number of the VLAN where the IP address is stored.
ip_address	IP address.
netmask	(Optional) The subnet mask.
broadcast	(Optional) The broadcast mask.
slip_address	IP address of the console port.
dest_address	IP address of the host to which the console port will be connected.

Default

The default configuration is sc0 and sl0 with IP address, netmask, and broadcast set as 0.0.0.0. The destination address for sl0 is also 0.0.0.0.

Command Mode

Privileged.

Usage Guidelines

The set interface command can be used to assign network addresses, subnet masks for the Catalyst interfaces administratively and destination addresses for slip interfaces. It can also be used to bring the interfaces up or down administratively. There are two configurable network interfaces to a Catalyst 2900: in-band (sc0) and SLIP (sl0). Once you assign an IP address to sc0, the Catalyst 2900 becomes accessible through Ethernet interfaces.

Example

The following example shows how to set the following elements from the console port:

interface sc0
interface sl0

It also shows administratively how to bring down interface sc0 using a console terminal:

Console> (enable) set interface sc0 192.200.11.44 255.255.255.0
Interface sc0 IP address and netmask set.
Console> (enable) set interface sl0 192.200.10.45 192.200.10.103
Interface sl0 SLIP and destination address set.
Console> (enable) set interface sc0 down.
Interface sc0 administratively down.
Console> (enable)

The following example shows how to set the IP address for sc0 through a Telnet session:

Console> (enable) set interface sc0 192.200.11.40
This command may disconnect active telnet sessions.
Do you want to continue (y/n) [n]? y
Interface sc0 IP address set.

The following example shows how to take the interface out of operation through a Telnet session:

Console> (enable) set interface sc0 down
This command will inactivate telnet sessions.
Do you want to continue (y/n) [n]? y
Interface sc0 administratively down.

The interface hangs until timeout or until sc0 is up again.

The following example shows how to identify the VLAN on which to store the IP address:

Console> (enable) set interface sc0 5
Interface sc0 vlan set.
Console> (enable)
Console> (enable) set interface sc0 200
Vlan is not active, user needs to set vlan 200 active
Interface sc0 vlan set.
Console> (enable)

The interface hangs until timeout or until sc0 is up again.

Related Command

show interface

set ip alias

Use the set ip alias command to add aliases of IP addresses.

set ip alias name ip_addr

Syntax Description

name	The name of the alias being defined.
ip_addr	The IP address of the alias being defined.

Default

The default configuration has one IP alias (0.0.0.0) configured as the default.

Command Mode

Privileged.

Example

The following example shows how to define an IP alias of mercury for IP address 192.122.174.234:

Console> (enable) set ip alias mercury 192.122.174.234
IP alias added.
Console> (enable)

Related Commands

clear ip alias
show ip alias

set ip fragmentation

Use the set ip fragmentation command to enable or disable the fragmentation for IP packets bridged between Ethernet networks, which have different maximum transmission units (MTUs).

set ip fragmentation {enable | disable}

Syntax Description

enable	Allows fragmentation for IP packets bridged between Ethernet networks, which have different MTUs.
disable	Disallows fragmentation for IP packets bridged between networks with different MTUs. Packets are dropped.

Default

The default value is IP fragmentation enabled.

Command Mode

Privileged.

Example

The following example shows how to disable IP fragmentation:

Console> (enable) set ip fragmentation disable
IP fragmentation disabled for module 2
Console> (enable)

Related Command

set ip route
show ip route

set ip help

Use the set ip help command to list the set ip commands.

set ip help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set ip commands:

Console> (enable) set ip help
Set ip commands:
----------------------------------------------------------------------
set ip alias               Set alias for IP Address
set ip fragmentation       Set IP fragmentation enable/disable
set ip help                Show this message
set ip redirect            Set ICMP redirect enable/disable
set ip route               Set IP routing table entry
set ip unreachable         Set ICMP unreachable messages
Console> (enable)

Related Commands

set ip alias
set ip redirect
set ip route

set ip redirect

Use the set ip redirect command to enable or disable ICMP redirect messages for the Catalyst 2900.

set ip redirect {enable | disable}

Syntax Description

enable	Activates ICMP redirect messages to sender.
disable	Deactivates ICMP redirect messages to sender.

Default

The default configuration has ICMP redirect enabled.

Command Mode

Privileged.

Example

The following example shows how to deactivate the redirection of ICMP messages:

Console> (enable) set ip redirect disable
ICMP redirect messages disabled.
Console> (enable)

Related Commands

show ip route
show netstat

set ip route

The set ip route command adds IP addresses or aliases to the IP routing table.

set ip route destination gateway [ metric ]

Syntax Description

destination	The IP address or IP alias of the network or specific host.
gateway	The IP address or IP alias of the router.
metric	(Optional) Indicates whether the destination network is local or remote. Use 0 for local and 1 for remote.

Default

The default configuration routes the local network through the sc0 interface with metric 0 as soon as sc0 is configured.

Command Mode

Privileged.

Example

The following example shows how to set the default route to 192.122.173.42:

Console> (enable) set ip route default 192.122.173.42
Route added.
Console> (enable)

Related Commands

clear ip route
show snmp
show ip route

set ip unreachable

Use the set ip unreachable command to enable or disable Internet Control Message Protocol (ICMP) unreachable messages for the switch.

set ip unreachable {enable | disable}

Syntax Description

enable	Allows IP unreachable messages to be returned to the Internet source host.
disable	Disallows IP unreachable messages to be returned to the Internet source host.

Default

The default is ICMP unreachable messages enabled.

Command Mode

Privileged.

Usage Guidelines

When enabled, the switch returns an ICMP unreachable message to the Internet source host whenever it receives an IP datagram that it cannot deliver. When disabled, the switch does not notify the Internet source host when it receives an IP datagram that it cannot deliver.

Example

The following example shows how to disable ICMP unreachable messages:

Console> (enable) set ip unreachable disable
ICMP unreachable message disabled for module 4
Console> (enable)

Related Commands

show ip unreachable
show ip route

set length

Use the set length command to configure the number of lines in the terminal display screen.

set length number (in normal mode)
set length number [ default ] (in privileged mode only)

Syntax Description

number	Number of lines to display on the screen (0-512).
default	Sets the number of lines in the terminal display screen for the current administration session and all other sessions.

Default

The default value is 24 lines upon starting a session. When the value is changed in a session, it applies only to that administration session.

Command Mode

Normal.

Usage Guidelines

Output from a single command that overflows a single display screen is followed by the --More-- prompt. At the --More-- prompt, you can type Ctrl-C to quit, q or Q to quit, press the Spacebar to display an additional screen of output, or press Return to display one more line of output. Setting the screen length to 0 turns off the scrolling feature and causes the entire output to be displayed at once. Unless a default value is specified, a value that is changed in an administrative session only applies to the current session.

Example

The following example shows how to use normal mode to set the screen length to 30 lines:

Console> set length
Usage: set length 
       (screenlength = 5..512, 0 to disable 'more' feature)
Console> set length 30
Screen length for this session set to 30.
Console>

The following example shows how to use privileged mode to set the screen length to 24 lines for the current administration session and all other sessions:

Console> (enable) set length
Usage: set length  [default]
       (screenlength = 5..512, 0 to disable 'more' feature)
Console> (enable) set length 24 default
Screen length default for new sessions set to 24.
Console> (enable)

set logout

Use the set logout command to set the number of minutes until the system automatically disconnects an idle session.

set logout timeout

Syntax Description

timeout

The number of minutes until the system automatically disconnects an idle session.

Default

The default value is 20 minutes.

Usage Guidelines

You can specify a timeout period from 0 to 10,000 minutes. Setting the value to 0 disables the automatic disconnection of idle sessions.

Command Mode

Privileged.

Example

The following example shows how to use the set logout command:

Console> (enable) set logout
Usage: set logout 
       timeout = 0..10000 minutes; 0 disables automatic logout
Console> (enable) set logout 20 
Sessions will be automatically logged out after 20 minutes of idle time.
Console> (enable) set logout 0
Sessions will not be automatically logged out.
Console> (enable)

set module disable

Use the set module disable command to disable a module.

set module disable mod_num

Syntax Description

mod_num

The number of the module. You can specify a series of modules by entering a comma between each module number (for example: 2,3,5). You can specify a range of modules by entering a dash between module numbers (for example: 2 to 5).

Default

The default configuration has all modules enabled.

Command Mode

Privileged.

Usage Guidelines

Avoid disabling a module via a Telnet session because your Telnet session may be established on the module being disabled. In such case, the Telnet session will hang. The supervisor module cannot be disabled.

Example

The following example shows how to disable module 1 through the console port:

Console> (enable) set module disable 1
Module 2 disabled.
Console> (enable)

The following example shows how to disable module 2 through a Telnet session:

Console> (enable) set module disable 2
This command may disconnect your telnet session.
Do you want to continue (y/n) [n]? y
Module 2 disabled.

Related Commands

set module enable
show module

set module enable

Use the set module enable command to enable a module.

set module enable module_num

Syntax Description

module_num

The number of the module.

Default

The default setting has all modules enabled.

Command Mode

Privileged.

Usage Guidelines

If an individual port on a module was previously disabled, enabling the module does not enable the disabled port.

Example

The following example shows how to enable module 2:

Console> (enable) set module enable 2
Module 2 enabled.
Console> (enable)

Related Commands

set module disable
show module

set module help

Use the set module help command to list the set module commands.

set module help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set module commands:

Console> (enable) set module help
Commands:
------------------------------------------------------------------------------
set module disable  Disable a module
set module enable   Enable a module
set module help     Show this message
set module name     Set module name
Console> (enable)

set module name

Use the set module name command to set the name for a module.

set module name module_num [ module_name ]

Syntax Description

module _num	The number of the module.
module_name	(Optional) The name being created for the module.

Default

The default configuration has no module names configured for any modules.

Command Mode

Privileged.

Usage Guidelines

If the module name is not specified, it is cleared.

Example

The following example shows how to set the name for module 1 to supervisor:

Console> (enable) set module name 1 Supervisor
Module name set.
Console> (enable)

Related Command

show module

set password

Use the set password command to change the initial level password on the CLI.

set password

Syntax Description

This command has no arguments or keywords.

Default

The default configuration has no password configured.

Command Mode

Privileged.

Usage Guidelines

The command prompts you for the old password followed by the new password. If the old password is valid, the command then prompts you to enter a new password twice. A zero length password is allowed. Old and new passwords typed are not echoed.

Example

The following example shows how to set an initial password:

Console> (enable) set password
Enter old password:
Enter new password:
Retype new password:
Password changed.
Console> (enable)

Related Command

set enablepass

set port disable

Use the set port disable command to disable a port.

set port disable mod_num/port_num

Syntax Description

mod _num	The number of the module.
port_num	The number of the port.

Default

The default system configuration has all ports enabled.

Command Mode

Privileged.

Example

The following example shows how to take port 10 on module 2out of service:

Console> (enable) set port disable 2/10
Port 2/10 disabled.
Console> (enable)

Related Commands

set port enable
show port

set port duplex

Use the set port duplex command to configure the transmission type of an Ethernet or Fast Ethernet interface.

set port duplex mod num/port num {full | half | auto}

Syntax Description

mod num	The number of the module.
port num	The number of the port.
full	Indicates full duplex.
half	Indicates half duplex.
auto	Indicates the port is in auto-sensing mode, and has not yet determined the port duplex.

Default

The default configuration for 10 Mbps and 100 Mbps modules has all Ethernet ports set to half duplex. The default configuration for 10/100 Mbps Fast Ethernet modules has all ports set to auto.

Command Mode

Privileged.

Usage Guideline

Ethernet and Fast Ethernet interfaces can be configured to either full duplex or half duplex. When a port is in auto-sensing mode, enabled by the set port speed command, both its speed and duplex are determined by auto-sensing. The following type of error messages is therefore generated if you attempt to set the transmission type of auto-sensing Fast Ethernet ports to half or full duplex mode:

cat4-lnf> (enable) set port duplex 2/1 full (1 port - failed)
Port 2/1 is in auto-sensing mode.

Example

The following example shows how to set port 1 on module 2 to full duplex:

Console> (enable) set port duplex 2/1 full
Port 2/1 set to full-duplex.
Console> (enable)

Related Command

show port

set port enable

Use the set port enable command to enable or disable a port.

set port enable mod_num/port_num

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.

Default

All ports enabled.

Command Mode

Privileged.

Example

The following example shows how to enable port 3 on module 2:

Console> (enable) set port enable 2/3
Port 2/3 enabled.
Console> (enable)

Related Commands

set port disable
show port

set port help

Use the set port help command to list the set port commands.

set port help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set port commands:

Console> (enable) set port help
Commands:
------------------------------------------------------------------------------
set port disable    Disable a port
set port duplex     Set port transmission type (full/half duplex)
set port enable     Enable a port
set port help       Show this message
set port level      Set port priority level (normal/high)
set port name       Set port name
set port speed      Set port transmission speed (10/100 Mbps)
set port trap       Set port up/down trap (enable/disable)
Console> (enable)

Related Commands

set port disable
set port duplex
set port level
set port enable
set port name
set port speed
set port trap
show port

set port level

Use the set port level command to set the priority level of the port on the switching bus.

set port level mod_num/port_num {normal | high}

Syntax Description

mod_num	The number of the module.
port_num	The number of the port on the module.
normal	Indicates that packets traveling through ports set at normal priority are served after packets traveling through ports set at high priority.
high	Indicates that packets traveling through the specified port are served first.

Default

The default configuration has all ports at normal priority level.

Command Mode

Privileged.

Example

The following example shows how to set the priority level for port 2 on module 1 to high:

Console> (enable) set port level 1/2 high
Port 1/2 port level set to high.
Console> (enable)

Related Commands

set port disable
set port duplex
set port enable
set port help
set port name
set port speed
set port trap
show port

set port name

Use the set port name command to configure a name for a port.

set port name mod_num/port_num [ name_string ]

Syntax Description

mod_num	The number of the module
port_num	The number of the port.
name_string	(Optional) A description of the port.

Default

The default configuration has no port name configured for any port.

Command Mode

Privileged.

Usage Guidelines

If the name string is not specified, the port name is cleared.

Example

The following example shows how to set port 1 on module 4 to Fred Grover:

Console> (enable) set port name 4/1 Fred Grover
Port 4/1 name set.
Console> (enable)

Related Commands

set port disable
set port duplex
set port enable
set port help
set port level
set port speed
set port trap
show port

set port spe ed

Use the set port speed command to configure the speed of a 10/100 Fast Ethernet interface.

set port speed mod num/port num {10 | 100 | auto}

Syntax Description

mod num	The number of the module.
port num	The number of the port.
10	Set the port speed to 10 Mbps.
100	Set the port speed to 100 Mbps.
auto	Set the port speed to auto-sensing mode.

Default

The default configuration has all 10/100 Mbps Fast Ethernet Switching Module ports set to auto.

Command Mode

Privileged.

Usage Guidelines

Fast Ethernet interfaces on the 10/100 Mbps Fast Ethernet Switching module can be configured to either 10 Mbps or 100 Mbps. They can also be set to auto-sensing mode, allowing them to sense and distinguish between 10 Mbps and 100 Mbps port transmission speeds and full-duplex or half-duplex port transmission types at a remote port connection. Set at auto-sensing mode, the interfaces automatically configure themselves to operate at the proper speed and transmission type.

Example

The following examples show how to set port 1 on module 2 to auto-sensing mode, configured to either 10 Mbps or 100 Mbps:

Console> (enable) set port speed
Usage: set port speed  <10|100|auto>
Console> (enable) set port speed 2/1 auto
Port 2/1 speed set to auto-sensing mode.
Console> (enable) set port speed 2/2 10
Port 2/2 speed set to 10 Mbps.
Console> (enable) set port speed 2/3 100
Port 2/3 speed set to 100 Mbps.

Related Commands

set port disable
set port duplex
set port enable
set port help
set port level
set port name
set port trap
show port

set port trap

Use the set port trap command to enable or disable the standard SNMP link trap operation (up or down) for a port.

set port trap mod_num/port_num enable | disable

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
enable	Activates the SNMP link trap.
disable	Deactivates the SNMP link trap.

Default

The default configuration has all port traps disabled.

Command Mode

Privileged.

Example

Console> (enable) set port trap
Usage: set port trap  
Console> (enable) set port trap 1/2 enable
Port 1/2 up/down trap enabled.
Console> (enable)

Related Commands

set port disable
set port duplex
set port enable
set port help
set port level
set port name
show port

set prompt

Use the set prompt command to change the prompt for the CLI.

set prompt prompt_string

Syntax Description

prompt_string

The text that is to appear in place of the default prompt "Console>".

Default

The default configuration has the prompt "Console>".

Command Mode

Privileged.

Example

The following example shows how to set the prompt to "system100>":

Console> (enable) set prompt system100>
system100> (enable)

set snmp community

Use the set snmp community command to set one of the three SNMP community strings.

set snmp community access_type [ community_string ]

Syntax Description

access_type	Identifies the type of access available to the SNMP community. Specify read-only, read-write, or read-write all.
community_string	(Optional) Identifies the name of the SNMP community.

Default

The following communities with preestablished access types have been set as defaults:

public: read-only
private: read-write
secret: read-write-all

Command Mode

Privileged.

Example

The following example shows how to set the SNMP community called hocuspocus to read-write access type:

Console> (enable) set snmp community read-write hocuspocus
SNMP read-write community string set.
Console> (enable) set snmp community read-only
SNMP read-only community string cleared.
Console> (enable)

Related Command

show snmp

set snmp help

Use the set snmp help command to list the set snmp commands.

set snmp help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set snmp commands:

Console> (enable) set snmp help
Set snmp commands:
----------------------------------------------------------------------
set snmp community       Set SNMP community string
set snmp help            Show this message
set snmp rmon            Set SNMP RMON
set snmp trap            Set SNMP trap information
Console> (enable)

set snmp rmon

Use the set snmp rmon command to enable or disable SNMP remote monitoring (RMON) support.

set snmp rmon enable | disable

Syntax Description

enable	Activates SNMP remote monitoring support.
disable	Deactivates SNMP remote monitoring support.

Default

The default is that remote monitoring support is enabled.

Command Mode

Privileged.

Usage Guidelines

The following configurations and implementations are supported:

Remote monitoring statistics are collected on a segment basis instead of a repeater port basis for the Catalyst 2900 Group Switching Ethernet Module (100BaseFX port).
The remote monitoring feature deinstalls all of the domains for all of the interfaces on an Ethernet module that has been removed from the system.
RMON is only enabled for ethernet ports.
RMON groups enabled are ethernets, history, alarm, and events as specified in RFC 1757.
Use of this command requires a separate software license.

Example

The following example shows how to enable and disable remote monitoring support:

Console> (enable) set snmp rmon
Usage: set snmp rmon 
Console> (enable) set snmp rmon enable
SNMP RMON support enabled.
Console> (enable) set snmp rmon disable
SNMP RMON support disabled.

Related Command

show snmp

set snmp trap

Use the set snmp trap command to enable, disable, or add an entry into the SNMP authentication trap receiver table, or to enable or disable other specific types of traps on the system.

Syntax Description

enable	Activates SNMP authentication trap.
disable	Deactivates SNMP authentication trap.
all	Indicates all types of traps.
module	Indicates the moduleUp and moduleDown traps from the CISCO-STACK-MIB.
chassis	Indicates the chassisAlarmOn and chassisAlarmOff traps from the CISCO-STACK-MIB
bridge	Indicates the newRoot and topologyChange traps from RFC 1493 (the BRIDGE-MIB).
repeater	Indicates the rptrHealth,rptrGroupChange, and rptrResetEvent traps from RFC 1516 (the SNMP-REPEATER-MIB).
auth	Indicates the authenticationFailure trap from RFC 1157.
rcvr_address	The IP address or IP alias of the trap receiver.
rcvr_community	The community string to use when sending authentication traps.

Default

The default configuration has the SNMP authentication trap disabled.

Command Mode

Privileged.

Example

The following example shows how to enable an entry in the SNMP trap receiver table:

Console> (enable) set snmp trap
Usage: set snmp trap  [all|module|chassis|bridge|repeater|auth|vtp]
       set snmp trap  
       (rcvr_address is ipalias or IP address, rcvr_community is string)
Console> (enable) set snmp trap enable chassis
SNMP chassis alarm traps enabled.
Console> (enable)

The following example shows how to add an entry in the SNMP trap receiver table:

Console> (enable) set snmp trap 192.122.173.42 public
SNMP trap receiver added.
Console> (enable)

Related Commands

clear snmp trap
show snmp
test snmp trap

set span

Use the set span command to set up the port analyzer.

set span enable
set span disable
set span src_mod/src_port dest_mod/dest_port [ rx | tx | both ]
set span src_vlan dest_mod/dest_port [ rx | tx | both ]

Syntax Description

enable	Port monitoring is enabled.
disable	Port monitoring is disabled.
src_mod	The monitored module (source).
src_port	The monitored port (source).
dest_mod	The monitoring module (destination).
dest_port	The monitoring port (destination).
src_vlan	The monitored VLAN (source).
rx	Information received at the destination is monitored.
tx	Information transmitted from the source is monitored.
both	Both information that is transmitted from the source and received at the destination is monitored.

Default

The default configuration has port monitoring disabled, port 1/1 as the monitoring port (destination), VLAN 1 as the monitored VLAN (source), and both transmit and receive packets monitored. If the parameter rx, tx, or both is not specified, the default is both.

Command Mode

Privileged.

Usage Guidelines

After the port analyzer is enabled and the defaults set up, subsequent commands replace source ports, VLANs, and destination ports.

Use either a dedicated remote monitor probe or a Sniffer analyzer to monitor ports.

The following SPAN configurations and implementations are supported:

You can configure a trunk port as a source or destination port. If the destination port is a trunk port, all outgoing packets through the SPAN carry an ISL header.
The SPAN feature operates on a port basis on the Catalyst 2900 Fast Ethernet Module (10/100 TX or 100BaseFX port). Source and destination ports cannot be in the same repeater segment.
When a switch port is configured as a destination SPAN port, it is no longer a normal switch port; only monitored traffic through the SPAN port is displayed.
Once a SPAN is enabled, you cannot change the VLAN configuration of the destination SPAN port.
When SPAN is enabled, if you disable a source or destination port, the SPAN functionality stops operating until both the source and destination ports are again enabled.
You can configure a disabled port to be a source or destination port, but the SPAN function does not take effect until both source and destination ports are enabled.
When SPAN is enabled for monitoring a VLAN, if you move a switched port into or out of the monitored VLAN, the number of monitored ports changes.
Source and destination ports cannot be the same port.
Source and destination ports must be of the same VLAN type.
A trunk port cannot be one of the monitored ports if the SPAN is enabled to monitor VLAN traffic.

Example

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
Console> (enable) set span
Usage: set span enable
       set span disable
       set span   [rx|tx|both]
       set span   [rx|tx|both]
Console> (enable) set span 2/3 2/4 tx
Enabled monitoring of ports 2/3 transmit traffic by ports 2/4.
Console> (enable) set span enable
span enabled.
Console> (enable)

Related Commands

clear config all
show span

set spantree disable

Use the set spantree disable command to disable the spanning-tree algorithm for a VLAN.

set spantree disable [ vlan ]

Syntax Description

vlan

(Optional) The number of the VLAN. If the VLAN number is not specified, the default, VLAN 1, is used.

Default

The default configuration has all spanning trees enabled.

Command Mode

Privileged.

Example

The following example shows how to disable the spanning-tree algorithm for VLAN 1:

Console> (enable) set spantree disable 1
VLAN 1 bridge spanning tree disabled.
Console> (enable)

Related Commands

set spantree enable
show spantree

set spantree enable

Use the set spantree enable command to enable the spanning-tree algorithm for a VLAN.

set spantree enable [ vlan ]

Syntax Description

vlan

(Optional) The number of the VLAN. If a VLAN number is not specified, the default, VLAN 1, is used.

Default

The default configuration has all spanning trees enabled.

Command Mode

Privileged.

Example

The following example shows how to activate the spanning-tree algorithm for VLAN 1:

Console> (enable) set spantree enable 1
VLAN 1 bridge spanning tree enabled.
Console> (enable)

Related Commands

show spantree
set spantree disable

set spantree fwddelay

Use the set spantree fwddelay command to set the bridge forward delay for a VLAN.

set spantree fwddelay delay [ vlan ]

Syntax Description

delay	The number of seconds (4-30) for the bridge forward delay.
vlan	(Optional) The number of the VLAN. If a VLAN number is not specified, VLAN 1 is assumed.

Default

The default configuration has fwddelay set to 15 seconds for all VLANs.

Command Mode

Privileged.

Example

The following example shows how to set the bridge forward delay for VLAN 1000 to 16 seconds:

Console> (enable) set spantree fwddelay 16 1000
VLAN 1000 bridge forward delay set to 16 seconds.
Console> (enable)

Related Command

show spantree

set spantree hello

Use the set spantree hello command to set the bridge hello time for a VLAN.

set spantree hello interval [ vlan ]

Syntax Description

interval	The number of seconds (1-10) the system waits before sending a multicast message indicating that it is present.
vlan	(Optional) The number of the VLAN. If a VLAN number is not specified, VLAN 1 is assumed.

Default

The default configuration has hello time set to 2 seconds for all VLANs.

Command Mode

Privileged.

Example

The following example shows how to set the spantree hello time to 2 seconds for VLAN 1000:

Console> (enable) set spantree hello 2 1000
VLAN 1000 bridge hello time set to 2.
Console> (enable)

Related Command

show spantree

set spantree help

Use the set spantree help command to list the available set spantree commands.

set spantree help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set spantree commands:

Console> (enable) set spantree ?
Set spantree commands:
----------------------------------------------------------------------
set spantree disable      Disable spanning tree
set spantree enable       Enable spanning tree
set spantree fwddelay     Set spantree forward delay
set spantree hello        Set spantree hello interval
set spantree help         Show this message
set spantree maxage       Set spantree max aging time
set spantree portcost     Set spantree port cost
set spantree portfast     Set spantree port fast start
set spantree portpri      Set spantree port priority
set spantree priority     Set spantree priority
set spantree portvlanpri  Set spantree port vlan priority
Console> (enable)

set spantree maxage

Use the set spantree maxage command to set the bridge maximum aging time for a VLAN.

set spantree maxage agingtime [ vlan ]

Syntax Description

agingtime	The maximum number of seconds (6-40) that the system retains the information received from other bridges through Spanning-Tree Protocol.
vlan	(Optional) The number of the VLAN. If a VLAN number is not specified, VLAN 1 is assumed.

Default

The default configuration is 20 seconds.

Command Mode

Privileged.

Example

The following example shows how to set the maximum aging time for VLAN 1000 to 20 seconds:

Console> (enable) set spantree maxage 20 1000
VLAN 1000 bridge max aging time set to 20.
Console> (enable)

Related Command

show spantree

set spantree portcost

Use the set spantree portcost command to set the bridge path cost for a port.

set spantree portcost mod_num/port_num cost

Syntax Description

mod_num	The number of the module.
port_num	The number of the port on the module.
cost	A number, from 0 to 65535, that indicates the cost of the path. Zero (0) is a low cost, and 65535 is a high cost.

Default

The default configuration is as follows:

100BaseTX Ethernet port cost = 10
10BaseT Ethernet port cost = 100

Command Mode

Privileged.

Example

The following example shows how to set the portcost for port 1 on module 4 to 10:

Console> (enable) set spantree portcost 4/1 10
Bridge port 4/1 path cost set to 10.
Console> (enable)

Related Command

show spantree

set spantree portfast

Use the set spantree portfast command to allow a port that is connected to a single workstation or PC to start faster when it is connected.

set spantree portfast mod_num/port_num enable | disable

Syntax Description

mod_num	The number of the module.
port_num	The number of the port on the module.
enable	Enables the spanning tree bridge portfast for a port.
disable	Disables the spanning tree bridge portfast for a port.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

When you use the spantree portfast enable command on a port, when the port is connected it immediately enters into the spanning tree forwarding state rather than going through the normal spanning tree states such as listening and learning. Use this command on ports that are connected to a single workstation or PC only; do not use it on ports that are connected to networking devices such as hubs, routers, switches, bridges, or concentrators.

Example

The following example shows how to set the spanning tree bridge portfast for port 2 on module 1.

Console> (enable) set spantree portfast
Usage: set spantree portfast  
Console> (enable) set spantree portfast 1/2 enable
Warning: Spantree port fast start should only be enabled on ports connected to a single host. Connecting hubs, concentrators, switches, bridges, etc. to a fast start port can cause temporary spanning tree loops. Use with caution.
Spantree port 1/2 fast start enabled.
Console> (enable) set spantree portfast 1/2 disable
Spantree port 1/2 fast start disabled.
Console> (enable)

set spantree portpri

Use the set spantree portpri command to set the bridge priority for a port in spanning-tree algorithm.

set spantree portpri mod_num/port_num priority

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
priority	A number that represents the cost of a link in a spanning-tree bridge. The priority level is from 0 to 63, with 0 indicating high priority, and 63 indicating low priority.

Default

The default configuration has all ports with bridge priority set to 32.

Command Mode

Privileged.

Example

The following example shows how to set the priority of port 1 on module 4 to 63:

Console> (enable) set spantree portpri 4/1 63
Bridge port 4/1 priority set to 63.
Console> (enable)

Related Command

show spantree

set spantree portvlanpri

Use the set spantree portvlanpri command to set the port priority for a subset of vlans in the trunk port.

set spantree priority bridge_priority [ vlan ]

Syntax Description

bridge_ priority	A number representing the priority of the bridge. The priority level is from 0 to 65535, with 0 being high priority, and 65535 being low priority.
vlan	(Optional) The number of the VLAN. If a VLAN number is not specified, VLAN 1 is used.

Default

Default configuration has the port Vlan priority set to 0 and no Vlans using this priority level. Subsequent calls to this command add Vlans to a specified port priority level. Additionally, subsequent calls to this command do not replace lans that are set at a specified port priority level.

Command Mode

Privileged.

Usage Guidelines

Set the port priority within the range of 0 to 63.

Example

Console> (enable) set spantree portvlanpri ?
Usage: set spantree portvlanpri   [vlans]
      (priority = 0..63)
Console> (enable) set spantree portvlanpri 1/2 16 21-40
Port 1/2 vlans 3,6-20,41-1000 using portpri 32
Port 1/2 vlans 1-2,4-5,21-40 using portpri 16
Console> (enable)

Related Commands

show spantree
clear spantree portvlsnpri

set spantree priority

Use the set spantree priority command to set the bridge priority for a VLAN.

set spantree priority bridge_priority [ vlan ]

Syntax Description

bridge_ priority	A number representing the priority of the bridge. The priority level is from 0 to 65535, with 0 being high priority, and 65535 being low priority.
vlan	(Optional) The number of the VLAN. If a VLAN number is not specified, VLAN 1 is used.

Default

The default configuration has the bridge priority set to 32768.

Command Mode

Privileged.

Example

The following example shows how to set the bridge priority of VLAN 1 to 4096:

Console> (enable) set spantree priority 4096
VLAN 1 bridge priority set to 4096.
Console> (enable)

Related Command

show spantree

set system baud

Use the set system baud command to set the console port baud rate.

set system baud rate

Syntax Description

rate

The baud rate. Valid rates are 600, 1200, 2400, 4800, 9600, 19200, and 38400.

Default

The default value is 9600 baud.

Command Mode

Privileged.

Example

The following example shows how to set the system baud rate to 19200:

Console> (enable) set system baud 19200
System console port baud rate set.
Console> (enable)

Related Command

show system

set system contact

Use the set system contact command to set the system contact string.

set system contact [ contact_string ]

Syntax Description

contact_string

(Optional) User-definable text, usually containing the name of the person to contact for system administration. If no contact string is specified, the system contact string is cleared.

Default

The default configuration has no system contact configured.

Command Mode

Privileged.

Example

The following example shows how to set the system contact string to Luis x5529:

Console> (enable) set system contact Luis x5529
System contact set.
Console> (enable)

Related Command

show system

set system help

Use the set system help command to list the set system commands.

set system help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the set system commands:

Console> (enable) set system help
Commands:
------------------------------------------------------------------------------
set system baud     Set system console port baud rate
set system contact  Set system contact
set system help     Show this message
set system location Set system location
set system modem    Set system modem control (enable/disable)
set system name     Set system name
Console> (enable)

set system location

Use the set system location command to set the system location string.

set system location [ location_string ]

Syntax Description

location_string

(Optional) A word or phrase that indicates where the system is located. If no location string is specified, the system location is cleared.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to set the system location string to "Closet 230 4/F":

Console> (enable) set system location Closet 230 4/F
System location set.
Console> (enable)

Related Command

show system

set system modem

Use the set system modem command to enable or disable modem control lines on the console port.

set system modem {enable | disable}

Syntax Description

enable	Activates modem control lines on the console port.
disable	Deactivates modem control lines on the console port.

Default

The default configuration has modem control lines disabled.

Command Mode

Privileged.

Example

The following example shows how to disable the modem control lines on the console port:

Console> (enable) set system modem disable
Modem control lines disabled on console port.
Console> (enable)

Related Command

show system

set system name

Use the set system name command to configure a name for the system.

set system name [ name_string ]

Syntax Description

name_string

(Optional) A word or phrase that identifies the system. If no name is specified, the system name is cleared.

Default

The default configuration has no system name configured.

Command Mode

Privileged.

Example

The following example shows how to set the system name to "Support Group":

Console> (enable) set system name Support Group
System name set.
Console> (enable)

Related Command

show system

set time

Use the set time command to change the time of day in the system clock.

set time [ day_of_week ] [ mm/dd/yy ] [ hh:mm:ss ]

Syntax Description

day_of_week	(Optional) The day of the week.
mm/dd/yy	(Optional) The month, day, and year.
hh:mm:ss	(Optional) The current time in 24-hour format.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to set the system clock to Wednesday, May 17, 1995 at
1:25:55 p.m.:

Console> (enable) set time wed 5/17/95 13:25:55
Wed Feb 22 1995, 13:25:55
Console> (enable)

Related Command

show time

set trunk

Use the set trunk command to configure trunk ports.

set trunk mod_num/port_num [ on | off | desirable | auto ] [ vlan_range ]

Syntax Description

mod_num	The number of the module.
port_num	The number of the port.
on	This parameter puts the port into permanent ISL trunking mode, and negotiates to convert the link into a trunk port. Moreover, the port converts to be a trunk port even if the other end of the link does not agree to the change.
off	This parameter negotiates to convert the link into a nontrunk port. Moreover, the port converts to be a nontrunk port even if the other end of the link does not agree to the change. This is the default mode for non-dynamic interswitch link (nonDISL) trunks.
desirable	This parameter triggers negotiations to switch the state of the link from a trunk port to a nontrunk port.
auto	This parameter indicates that the port is willing to become a trunk port if another device on that link desires to be a trunk.
vlan_range	The VLANs specified are added to the list of allowed VLANs on the trunk. The VLAN range is 2 to 1000.

Default

All ports are nontrunk ports by default. The default vlan_range is 1 to 1000.

Command Mode

Privileged.

Usage Guidelines

Only Fast Ethernet ports can be configured as trunk ports. The set trunk command adds VLANs and ports to existing trunk groups; the command does not replace existing VLANs and ports with new VLANs and ports. VLAN numbers must be in the range from 1 to 1000.

When a Catalyst 2900 port that is configured to auto detects a link bit, and it determines that the other end of the link is a trunk port, the Catalyst 2900 automatically converts the port configured to auto into trunking mode. The trunk port reverts to a nontrunk port when its link goes down.

To return a trunk to a normal switched port, use the clear trunk command.

Example

The following example shows how to set port 2 on module 1 as a trunk port:

Console> (enable) set trunk
Usage: set trunk  [on|off|desirable|auto] [vlan_range]
       (vlans = 1..1000
       An example of vlans is 2-10,1000)
Console> (enable) set trunk 1/2 1-5
Port 1/2 allowed vlans modified to 1-1000.
Console> (enable) set trunk 1/2 on
Port 1/2 mode set to on.
Console> (enable)

Related Commands

clear trunk
show trunk

set vlan

Use the set vlan command to group ports into a virtual LAN.

set vlan vlan_num mod/ports ...
set vlan vlan_num [ name name ] [ type type ] [ mtu mtu ] [ said said ]
         [ state state ] [ ring ring_number ] [ parent vlan_num ]

[ stp stp_type ] [ translation vlan_num ]

Syntax Description

vlan_num	The number of the VLAN.
mod	The number of the module.
ports	The number of the port on the module.
name	The name of the VLAN.
type	The VLAN type (Ethernet, Token Ring, or TR NET).
mtu	The maximum transmission unit (packet size, in bytes) that the VLAN can use.
said	Security association identifier.
state	The VLAN is either active or suspended.
ring_number	Ring number for token ring vlans.
stp_type	1-Source routing transparent, 2-Source routing porting.

Default

The default configuration has all switched Ethernet ports and Ethernet repeater ports in VLAN 1. The default SAID for VLAN 1 is 100001, for VLAN 2 is 100002, for VLAN 3 is 100003, and so on. The default type is Ethernet. The default mtu is 1500 bytes. The default status is "active".

Command Mode

Privileged.

Usage Guidelines

You cannot set multiple VLANs for ISL ports using this command. The VLAN name can be within the range of 1 to 32 characters in length. The VLAN number must be within the range of 1 to 1000.

Example

The following example shows how to set VLAN 1000 to include ports 1 and 2 on module 1, and
port 1 on module 2:

Console> (enable) set vlan
Usage:
set vlan  
set vlan  [name ][type ][mtu ][said ]
         [state ] [ring ]
         [parent ] [stp ] 
         [translation ]
         (An example of mod/ports is 1/1,2/1-12,3/1-2,4/1-12 
          type = (ethernet, token_ring, tr_net) 
          name = 1..32 characters, status = (active, suspend) 
          vlan_num = 1..1005)
Console> (enable) set vlan 1000 1/1,1/2,2/1
VLAN 1000 created.
VLAN 1 modified.
VLAN 3 modified.
VLAN    Mod/Ports
----    ----------------------------
1000    1/1-2
        2/1
Console> (enable) set vlan 3 name catbox type ethernet mtu 1500 said 3
VLAN 3 Added
Console> (enable)

Related Commands

clear vlan
show vlan

set vtp

Use the set vtp command to set the management domain name, VLAN trunk protocol mode of operation, advertisement interval, and password values.

set vtp [domain domain_name][mode mode][interval interval][passwd passwd]

Syntax Description

domain_name	The name that identifies the VLAN management domain (1 to 32 characters in length).
mode	The mode of operation (client, server).
interval	The rate at which periodic advertisements are generated (2 to 10 minutes).
passwd	The VLAN trunk protocol password (8 to 64 characters).

Default

This default interval is 5 minutes.

Command Mode

Privileged.

Usage Guidelines

The interval range is from two to ten minutes. The password must be at least eight characters in length.

Example

COnsole> (enable) set vtp
Usage:
set vtp [domain ][mode ][interval ][passwd ]
        (name: 1-32 characters, mode = (client, server, transparent), 
         interval = 120-600 sec, passwd : 0-64 characters)
Console> (enable) set vtp domain catbox mode client interval 160
VTP: domain catbox modified
Console> (enable)

Related Commands

clear vtp statistics
show vtp
show vtp domain
show vtp statistics

show alias

Use the show alias command to display shorthand versions of command invocations.

show alias [ name ]

Syntax Description

name

(Optional) The name of the alias to be displayed.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display all aliases:

Console> show alias
arpdelete     clear arp
resetclr      clear config

Related Commands

clear alias
session

show arp

Use the show arp command to display the Address Recognition Protocol (ARP) table.

show arp [ noalias ]

Syntax Description

noalias

(Optional) Indicates not to display the IP alias, only the IP address.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the ARP table:

Console> show arp
ARP Aging time = 1200 sec
cat7-lnf         at 00-40-0b-ac-83-ff
atlas            at 00-00-0c-35-7f-42

Related Commands

clear arp
set arp

show cam

Use the show cam command to display the CAM table.

show cam {dynamic | static | permanent | system} [ vlan ]
show cam {dynamic | static | permanent} mod_num/port_num
show cam mac_addr [ vlan ]

Syntax Description

dynamic	Specifies that entries are subject to aging.
static	Specifies that entries are not subject to aging.
permanent	Specifies that static (permanent) entries will be stored in NVRAM until they are removed by the clear cam or clear config command.
system	Specifies the system.
vlan	(Optional) Number of the VLAN. If a VLAN is not specified, all VLANs are displayed.
mod_num	The number of the module.
port_num	The number of the port.
mac_addr	The MAC address.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

To view the CAM aging time for a specific VLAN, use the show cam vlan command; to view aging time for all configured VLANs, use the show config command.

Example

The following example shows how to display dynamic CAM entries for VLAN 1:

Console> (enable) show cam dynamic 1
VLAN 1 Aging time = 300 sec
* = Static Entry. + = Permanent Entry. # = System Entry.
 
VLAN  Destination MAC      Destination Ports or VCs
----  ------------------   ----------------------------------------------------
1     08-00-20-22-cd-c0    1/1
1     08-00-20-72-16-b8    3/41
1     00-40-0b-f0-03-ff    3/36
 
Matching CAM Entries = 3
Console> (enable)

Related Commands

clear cam
set bridge help
show config

show cdp

Use the show cdp command to display Cisco Discovery Protocol (CDP) information.

show cdp neighbors [ mod_num ] [ detail ]
show cdp neighbors [ mod_num/port_num ] [ detail ]
show cdp port [ mod_num ]
show cdp port [ mod_num/port_num ]

Syntax Description

neighbors	Shows CDP information about all Cisco products connected to the switch.
mod_num	(Optional) The number of the module about which CDP information is to be displayed.
port_num	(Optional) The number of the port on the module about which CDP information is to be displayed.
detail	(Optional) Shows descriptive information about neighboring Cisco products.
port	Show CDP port settings.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display CDP information about neighboring systems:

Console> (debug-eng) show cdp neighbor
Port Device-ID               Port-ID           Platform              Capability
---- ----------------------- ----------------- --------------------- -----------
4/2  000041770(Workgroup Swi 5                 WS-C1201              T          
4/4  000102703               2/2               WS-C2900              S

The following example shows how to display CDP information for a particular port:

Console> (enable) show cdp port 2/1
Port  CDP Status  Message-Interval
----  ----------  ----------------
2/1   enabled     60
Console> (enable)

Related Commands

set cdp disable
set cdp enable

show config

Use the show config command to display the current system configuration.

show config

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows the contents of a configuration file:

Console> (enable) show config
......................................
begin
set password $1$FMFQ$HfZR5DUszVHIRhrz4h6V70
set enablepass $1$FMFQ$HfZR5DUszVHIRhrz4h6V70
set prompt Console>>
set length 100 default
set logout 0
!
#system
set system baud  9600
set system modem disable
set system name  cat9-lnf
set system location San Jose G-1
set system contact  Cal P.
!
#snmp
set snmp community read-only      public
set snmp community read-write     private
set snmp community read-write-all secret
set snmp rmon enable
set snmp trap disable module
set snmp trap disable chassis
set snmp trap disable bridge
set snmp trap disable repeater
set snmp trap disable vtp
set snmp trap disable auth
!
#ip
set interface sc0 3 172.20.25.132 255.255.0.0 172.20.255.255
set interface sl0 0.0.0.0 0.0.0.0
set arp agingtime 1200
set ip redirect   enable
set ip unreachable   disable
set ip fragmentation enable
set ip route 0.0.0.0         172.20.1.201    1
set ip alias default         0.0.0.0
set ip alias max             171.69.193.165
set ip alias cat7-lnf        172.20.25.130
set ip alias cat9-lnf        172.20.25.132
set ip alias da_bears        172.20.22.7
set ip alias atlas           172.20.1.201
set ip alias lnf             172.20.0.0
!
#Command alias
!
#bridge
set bridge ipx snaptoether   8023raw
set bridge ipx 8022toether   8023
#vtp
set vtp domain Cal mode server interval 300
set vlan 100001 name default type ethernet mtu 1500 said 1 state active ring 0 bridg0
set vlan 100003 name VLAN0003 type ethernet mtu 1500 said 3 state active ring 0 brid0
set vlan 100055 name vlan55 type ethernet mtu 1500 said 85 state active ring 0 brid0
set vlan 100088 name vlan88 type token_ring mtu 1500 said 88 state active ring 0 br0
set vlan 101003 name token-ring-default type token_ring mtu 4500 said 1003 state 0
set vlan 101005 name trnet-default type tr_net mtu 4500 said 1005 state active ri0
set vlan 100001 translation 1003 translation 1002
set vlan 101002 translation 1003 translation 1
set vlan 101003 translation 1 translation 1002
!
#vlan
!
#trunks
set trunk 1/1  on 1-1000
set trunk 1/2  auto 1-1000
set trunk 2/1  auto 1-1000
set trunk 2/2  auto 1-1000
set trunk 2/3  auto 1-1000
set trunk 2/4  auto 1-1000
set trunk 2/5  auto 1-1000
set trunk 2/6  auto 1-1000
set trunk 2/7  auto 1-1000
set trunk 2/8  auto 1-1000
set trunk 2/9  auto 1-1000
set trunk 2/10 auto 1-1000
set trunk 2/11 auto 1-1000
set trunk 2/12 auto 1-1000
!
#cam
set cam agingtime 1    300
set cam agingtime 3    300
set cam agingtime 55   300
!
#cdp
set cdp enable   1/1-2,2/1-12
set cdp interval 1/1-2,2/1-12 60
!
#spantree
#vlan 1
set spantree enable         1
set spantree fwddelay 15    1
set spantree hello    2     1
set spantree maxage   20    1
set spantree priority 32768 1
#vlan 3
set spantree enable         3
set spantree fwddelay 15    3
set spantree hello    2     3
set spantree maxage   20    3
set spantree priority 32768 3
#vlan 55
set spantree enable         55
set spantree fwddelay 15    55
set spantree hello    2     55
set spantree maxage   20    55
set spantree priority 32768 55
!
#trunk
set spantree portcost     1/1  10
set spantree portpri      1/1  32
set spantree portvlanpri  1/1  0
set spantree portfast     1/1  disable
set spantree portcost     1/2  10
set spantree portpri      1/2  32
set spantree portvlanpri  1/2  0
set spantree portfast     1/2  disable
set spantree portcost     2/1  10
set spantree portpri      2/1  32
set spantree portvlanpri  2/1  0
set spantree portfast     2/1  disable
set spantree portcost     2/2  10
set spantree portpri      2/2  32
set spantree portvlanpri  2/2  0
set spantree portfast     2/2  disable
set spantree portcost     2/3  10
set spantree portpri      2/3  32
set spantree portvlanpri  2/3  0
set spantree portfast     2/3  disable
set spantree portcost     2/4  10
set spantree portpri      2/4  32
set spantree portvlanpri  2/4  0
set spantree portfast     2/4  disable
set spantree portcost     2/5  10
set spantree portpri      2/5  32
set spantree portvlanpri  2/5  0
set spantree portfast     2/5  disable
set spantree portcost     2/6  10
set spantree portpri      2/6  32
set spantree portvlanpri  2/6  0
set spantree portfast     2/6  disable
set spantree portcost     2/7  10
set spantree portpri      2/7  32
set spantree portvlanpri  2/7  0
set spantree portfast     2/7  disable
set spantree portcost     2/8  10
set spantree portpri      2/8  32
set spantree portvlanpri  2/8  0
set spantree portfast     2/8  disable
set spantree portcost     2/9  10
set spantree portpri      2/9  32
set spantree portvlanpri  2/9  0
set spantree portfast     2/9  disable
set spantree portcost     2/10 10
set spantree portpri      2/10 32
set spantree portvlanpri  2/10 0
set spantree portfast     2/10 disable
set spantree portcost     2/11 10
set spantree portpri      2/11 32
set spantree portvlanpri  2/11 0
set spantree portfast     2/11 disable
set spantree portcost     2/12 10
set spantree portpri      2/12 32
set spantree portvlanpri  2/12 0
set spantree portfast     2/12 disable
!
#module 1 
set module name    1    
set port enable    1/1-2
set port level     1/1-2  normal
set port duplex    1/1-2  half
set port trap      1/1-2  disable
set port name      1/1-2
!
#module 2 
set module name    2    
set module enable  2
set port enable    2/1-12
set port level     2/1-12  normal
set port duplex    2/1-12  half
set port trap      2/1-12  disable
set port name      2/1-12
!
#switch port analyzer
set span 1 1/1  both
set span disable
end
Console> (enable)

Related Commands

write
clear config

show flash

Use the show flash command to list flash code information, such as file code names, version numbers, and sizes.

show flash

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the flash code versions:

Console> (enable) show flash
File            Version            Size (bytes)
--------------  -----------------  -------------
c2901 nmp       2.126               780825
      mcp       2.126                26323
      lcp       2.126                25151
      lcp 64k   2.126                36869
Console> (enable)

show help

Use the show help command to list the available show commands.

show help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to list the show commands:

Console> show help
Show commands:
-----------------------------------------------------------------------
show alias          Show aliases for commands
show arp            Show ARP table
show cam            Show CAM table
show cdp            Show Cisco Discovery Protocol Information
show flash          Show system flash information
show help           Show this message
show interface      Show network interfaces
show ip             Show IP Information
show mac            Show MAC information
show module         Show module information
show netstat        Show network statistics
show port           Show port information
show snmp           Show SNMP information
show span           Show switch port analyzer information
show spantree       Show spantree information
show system         Show system information
show test           Show results of diagnostic tests
show time           Show time of day
show trunk          Show trunk ports
show users          Show active Admin sessions
show version        Show version information
show vlan           Show Virtual LAN information
show vtp            Show VTP Information
Console>

show interface

Use the show interface command to display network interfaces.

show interface

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display sl0 and sc0:

Console> show interface
sl0: flags=51
        slip 0.0.0.0 dest 0.0.0.0
sc0: flags=63
        vlan 1 inet 172.20.25.127 netmask 255.255.0.0 broadcast 172.20.255.255 
Console>

Related Command

set interface

show ip alias

The show ip alias command shows aliases of IP addresses.

show ip alias [ name ]

Syntax Description

name

(Optional) The name of the host.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display all IP aliases:

Console> (enable) show ip alias
elvis        192.122.174.11
mercury      192.122.174.234
neptune      198.211.203.44

show ip help

Use the show ip help command to list the show ip commands.

show ip help

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to list the show ip commands:

Console> (enable) show ip help
Show ip commands:
----------------------------------------------------------------------
show ip alias       Show aliases for IP Addresses
show ip route       Show IP routing table
Console> (enable)

Related Commands

show ip alias
show ip route

show ip route

Use the show ip route command to display IP routing table entries.

show ip route [ noalias ]

Syntax Description

noalias

(Optional) Indicates not to display the IP alias, only the IP address.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

If the noalias keyword is specified, IP aliases are not displayed; only IP addresses are displayed.

Example

The following example shows how to display the established routes:

Console> (enable) show ip route
Fragmentation   Redirect   Unreachable
-------------   --------   -----------
disabled        enabled    disabled
Destination     Gateway         Flags   Use         Interface
--------------- --------------- ------  ----------  ---------
172.20.0.0      172.20.22.181   U                0  sc0
default         default         UH               0  sl0
Console> (enable)

Related Commands

clear ip route
set ip route
set ip fragmentation
set ip redirect
set ip unreachable

show log

Use the show log command to display the system error log.

show log

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to display the error log:

Console> (enable) show log
Network Management Processor (NMP) Log:
  Reset count:               1071
  Re-boot History:           Jul 25 1994 10:56:41 3, Jul 25 1994 10:56:41 3
                             Jul 25 1994 10:56:41 3, Jul 25 1994 10:56:41 3
                             Jul 25 1994 10:56:41 3, Jul 25 1994 10:56:41 3
                             Jul 25 1994 10:56:41 3, Jul 25 1994 10:56:41 3
                             Jul 25 1994 10:56:41 3
  Bootrom Checksum Failures:    0   UART Failures:              0
  Flash Checksum Failures:     17   Flash Program Failures:     0
  Power Supply 1 Failures:      6   Power Supply 2 Failures:   11
  DRAM Failures:                0
  Exceptions:                   7
    Last Exception occurred on Jul 25 1994 10:56:41 ...
    PC: 0005D3FE, Status: 2000, Vector: 7008
    sp+00: 20000005 D3FE7008 103FE7B8 00A50025
    sp+10: 002500A5 FFFFFFCE FFFFFFCE 00000033
    sp+20: FFFFFFCE 00000033 FFFFFFCE 00003300
    sp+30: 00000000 00000000 00000000
    D0: FFFFFFCE, D1: 0000007F, D2: 00000004, D3: 00000002
    D4: 00000000, D5: 00000000, D6: 00000000, D7: 00000000
    A0: 000015EF, A1: FFFFFFCF, A2: FFFFFFCE, A3: 00000000
    A4: 00000000, A5: 00000000, A6: 103FE7A8, sp: 103FE76C
Console> (enable)

Related Command

clear log

show mac

Use the show mac command to display MAC counters.

show mac
show mac mod_num
show mac mod_num/port_num

Syntax Description

mod_num	The number of the module. If a number is not specified, all modules are shown.
port_num	The number of the port on the module.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display MAC information:

Console> show mac
MAC       Rcv-Frms    Xmit-Frms   Rcv-Multi   Xmit-Multi  Rcv-Broad  Xmit-Broad
-------   ----------  ----------  ----------  ----------  ---------- ----------
1/1            98839        6475       98839        6474           0          1
1/2                0           0           0           0           0          0
2/1                0           0           0           0           0          0
2/2                0           0           0           0           0          0
2/3                0           0           0           0           0          0
2/4                0           0           0           0           0          0
2/5                0           0           0           0           0          0
2/6                0           0           0           0           0          0
2/7                0           0           0           0           0          0
2/8                0           0           0           0           0          0
2/9                0           0           0           0           0          0
2/10               0           0           0           0           0          0
2/11               0           0           0           0           0          0
2/12               0           0           0           0           0          0
MAC       Dely-Exced  MTU-Exced   In-Discard  Lrn-Discrd  In-Lost    Out-Lost
-------   ----------  ----------  ----------  ----------  ---------- ----------
1/1                0           0         375           0           0          0
1/2                0           0           0           0           0          0
2/1                0           0           0           0           0          0
2/2                0           0           0           0           0          0
2/3                0           0           0           0           0          0
2/4                0           0           0           0           0          0
2/5                0           0           0           0           0          0
2/6                0           0           0           0           0          0
2/7                0           0           0           0           0          0
2/8                0           0           0           0           0          0
2/9                0           0           0           0           0          0
2/10               0           0           0           0           0          0
2/11               0           0           0           0           0          0
2/12               0           0           0           0           0          0
Last-Time-Cleared
--------------------------
Sun Apr 21 1996, 11:51:37
Console>

Related Command

clear counters

show module

Use the show module command to display module status and information.

show module

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display module status and information:

Console> show module
Mod Module-Name          Ports Module-Type           Model   Serial-Num Status
--- -------------------- ----- --------------------- -------- --------- -------
1                        2     100BaseTX Supervisor  WS-X2900 002477455 ok
2                        12    100BaseTX Ethernet    WS-X2902 002567322 ok

Mod MAC-Address(es)                           Hw     Fw     Sw
--- ----------------------------------------  ------ ------ ----------------
1   00-40-0b-b2-f4-00 thru 00-40-0b-b2-f7-ff  1.81   2.112  2.126
2   00-40-0b-d5-04-8c thru 00-40-0b-d5-04-97  1.4    1.2    2.126

Related Commands

set module disable
set module enable
set module help
set module name

show netstat

Use the show netstat command to display statistics for the various protocols in the TCP/IP protocol stack. This command is also used to display the state of network connections currently active on the system.

show netstat [ stats | tcp | udp | ip | icmp | interfaces | routes ]

Syntax Description

stats	(Optional) Shows TCP, UDP, IP, and ICMP statistics.
tcp	(Optional) Shows TCP statistics.
udp	(Optional) Shows UDP statistics.
ip	(Optional) Shows IP statistics.
icmp	(Optional) Shows ICMP statistics.
interfaces	(Optional) Shows interface statistics.
routes	(Optional) Shows the IP routing table.

Default

This command has no default setting.

Command Mode

Normal.

Examples

The following example shows how to display default (TCP and UDP) statistics:

Console> show netstat
Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        (State)
tcp        0    128  192.122.174.221.23     192.122.174.40.1064    ESTABLISHED
tcp        0      0  *.23                   *.*                    LISTEN
udp        0      0  *.161                  *.*                    
Console>

The following example shows how to display TCP statistics:

Console> (enable) show netstat tcp
tcp:
        619 packets sent
                586 data packets (33863 bytes)
                16 data packets (2133 bytes) retransmitted
                17 ack-only packets (11 delayed)
                0 URG only packets
                0 window probe packets
                0 window update packets
                0 control packets
        806 packets received
                595 acks (for 34475 bytes)
                5 duplicate acks
                0 acks for unsent data
                329 packets (1082 bytes) received in-sequence
                0 completely duplicate packets (0 bytes)
                1 packet with some dup. data (1 byte duped)
                3 out-of-order packets (0 bytes)
                0 packets (0 bytes) of data after window
                0 window probes
                3 window update packets
                0 packets received after close
                0 discarded for bad checksums
                0 discarded for bad header offset fields
                0 discarded because packet too short
        0 connection requests
        4 connection accepts
        4 connections established (including accepts)
        3 connections closed (including 0 drops)
        0 embryonic connections dropped
        577 segments updated rtt (of 592 attempts)
        13 retransmit timeouts
                0 connections dropped by rexmit timeout
        0 persist timeouts
        0 keepalive timeouts
                0 keepalive probes sent
                0 connections dropped by keepalive
Console> (enable)

The following example shows how to display UDP statistics:

Console> show netstat udp
udp:
        0 incomplete headers
        0 bad data length fields
        0 bad checksums
        0 socket overflows
        1116 no such ports
Console>

The following example shows how to display IP statistics:

Console> show netstat ip
ip:
        957 total packets received
        0 bad header checksums
        0 with size smaller than minimum
        0 with data size < data length
        0 with header length < data size
        0 with data length < header length
        0 fragments received
        0 fragments dropped (dup or out of space)
        0 fragments dropped after timeout
        0 packets forwarded
        376 packets not forwardable
        0 redirects sent
Console>

The following example shows how to display ICMP statistics:

Console> show netstat icmp
icmp:
        Redirect enabled
        0 calls to icmp_error
        0 errors not generated 'cuz old message was icmp
        0 messages with bad code fields
        0 messages < minimum length
        0 bad checksums
        0 messages with bad length
        0 message responses generated
Console>

The following example shows how to display the IP routing table:

Console> show netstat routes
DESTINATION      GATEWAY         FLAGS    USE            INTERFACE
0.0.0.0          192.122.174.40  UG       13             sc0
192.122.174.0    192.122.174.221 U        457            sc0
Console>

The following example shows how to display interface statistics:

Console> show netstat interface
Interface            InPackets InErrors OutPackets OutErrors
sl0                          0        0          0         0
sc0                        599        0         74         0
Console>

Related Commands

set ip help
set ip route
set interface

show port

Use the show port command to display port status and counters.

show port
show port mod_num
show port mod_num/port_num

Syntax Description

mod_num	The number of the module.
port_num	The number of the port on the module.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the status and counters for all ports on module 2:

Console> show port
Port Name                 Status     Vlan       Level  Duplex Speed Type
---- -------------------- ---------- ---------- ------ ------ ----- -----------
1/1                       connected  trunk      normal   half   100 100BaseTX
1/2                       notconnect 1          normal   half   100 100BaseTX
2/1                       notconnect 1          normal   half   100 100BaseTX
2/2                       notconnect 1          normal   half   100 100BaseTX
2/3                       notconnect 1          normal   half   100 100BaseTX
2/4                       notconnect 1          normal   half   100 100BaseTX
2/5                       notconnect 1          normal   half   100 100BaseTX
2/6                       notconnect 1          normal   half   100 100BaseTX
2/7                       notconnect 1          normal   half   100 100BaseTX
2/8                       notconnect 1          normal   half   100 100BaseTX
2/9                       notconnect 1          normal   half   100 100BaseTX
2/10                      notconnect 1          normal   half   100 100BaseTX
2/11                      notconnect 1          normal   half   100 100BaseTX
2/12                      notconnect 1          normal   half   100 100BaseTX
Port Align-Err  FCS-Err    Xmit-Err   Rcv-Err
---- ---------- ---------- ---------- ----------
1/1           0          0          0          0
1/2           0          0          0          0
2/1           0          0          0          0
2/2           0          0          0          0
2/3           0          0          0          0
2/4           0          0          0          0
2/5           0          0          0          0
2/6           0          0          0          0
2/7           0          0          0          0
2/8           0          0          0          0
2/9           0          0          0          0
2/10          0          0          0          0
2/11          0          0          0          0
2/12          0          0          0          0
Port Single-Col Multi-Coll Late-Coll  Excess-Col Carri-Sens Runts     Giants
---- ---------- ---------- ---------- ---------- ---------- --------- ---------
1/1           0          0          0          0          0         0         -
1/2           0          0          0          0          0         0         -
2/1           0          0          0          0          0         0         -
2/2           0          0          0          0          0         0         -
2/3           0          0          0          0          0         0         -
2/4           0          0          0          0          0         0         -
2/5           0          0          0          0          0         0         -
2/6           0          0          0          0          0         0         -
2/7           0          0          0          0          0         0         -
2/8           0          0          0          0          0         0         -
2/9           0          0          0          0          0         0         -
2/10          0          0          0          0          0         0         -
2/11          0          0          0          0          0         0         -
2/12          0          0          0          0          0         0         -
Last-Time-Cleared
--------------------------
Sun Apr 21 1996, 11:51:37
Console>

Related Commands

clear counters
set port disable
set port enable
set port level
set port name
set vlan

show snmp

Use the show snmp command to display the SNMP information.

show snmp [ noalias ]

Syntax Description

noalias

(Optional) Indicates not to display the IP alias, only the IP address.

Default

This command has no default setting.

Command Mode

Normal and privileged.

Usage Guidelines

If "noalias" is specified, IP aliases are not displayed; otherwise IP addressees are shown.

Example

The following example shows how to display the community strings in normal mode:

Console> show snmp
RMON: Enabled
Traps Enabled: Chassis
Port Traps Enabled: None
Community-Access     Community-String    
----------------     --------------------
read-only            public
Trap-Rec-Address     Trap-Rec-Community
----------------     --------------------
192.122.173.42       public
Console>

The following example shows how to display the community strings in privileged mode:

Console> (enable) show snmp
show snmp
RMON: Enabled
Traps Enabled: Chassis
Port Traps Enabled: None
Community-Access     Community-String    
----------------     --------------------
read-only            public
Trap-Rec-Address     Trap-Rec-Community
----------------     --------------------
192.122.173.42       public
Console> (enable)

Related Commands

set snmp community
set snmp help
set snmp rmon
set snmp trap

show span

Use the show span command to display switch port analyzer information.

show span

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guideline

The Switched Port Analyzer analyzes the traffic through a switch port in the system. It also analyzes the traffic of a particular VLAN through all switch ports in the system.

Example

The following example shows how to display port monitoring information.

Console> show span
Source     Destination   Direction         Status
---------  ------------  ----------------  --------
Port 2/3   Port 3/1-12   transmit          disabled
Console>

Related Commands

clear config all
set span

show spantree

Use the show spantree command to display spanning-tree information for a VLAN.

show spantree [ vlan ]
show spantree mod_num/port_num

Syntax Description

vlan	(Optional) The number of the VLAN. If the VLAN number is not specified, the default is VLAN 1.
mod_num	The number of the module.
port_num	The number of the port on the module.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the spantree syntax structure and options:

Console>  show spantree ?
Usage: show spantree [vlan]
       show spantree

The following example shows how to display the spantree configuration:

Console> (enable) show spantree 1
VLAN 1
Spanning tree enabled
Designated Root             00-40-0b-ac-80-00
Designated Root Priority    32768
Designated Root Cost        10
Designated Root Port        1/1
Root Max Age   20 sec    Hello Time 2  sec   Forward Delay 15 sec
Bridge ID MAC ADDR          00-40-0b-b2-f4-00
Bridge ID Priority          32768
Bridge Max Age 20 sec    Hello Time 2  sec   Forward Delay 15 sec
Port      Vlan  Port-State     Cost   Priority  Fast-Start
--------  ----  -------------  -----  --------  ----------
1/1       1     forwarding        10        32   disabled
1/2       1     not-connected     10        32   disabled
2/1       1     not-connected     10        32   disabled
2/2       1     not-connected     10        32   disabled
2/3       1     not-connected     10        32   disabled
2/4       1     not-connected     10        32   disabled
2/5       1     not-connected     10        32   disabled
2/6       1     not-connected     10        32   disabled
2/7       1     not-connected     10        32   disabled
2/8       1     not-connected     10        32   disabled
2/9       1     not-connected     10        32   disabled
2/10      1     not-connected     10        32   disabled
2/11      1     not-connected     10        32   disabled
2/12      1     not-connected     10        32   disabled

The following example shows how to display the spantree configuration for module 1, ports 1 and 2, and module 2, ports 1 through 4:

Console> show spantree 1/1-2,2/1-4
Port      Vlan  Port-State     Cost   Priority  Fast-Start
--------  ----  -------------  -----  --------  ----------
1/1       1     forwarding        10        32   disabled
1/1       3     forwarding        10        32   disabled
1/1       44    forwarding        10        32   disabled
1/1       55    forwarding        10        32   disabled
1/1       66    not-connected     10        32   disabled
1/1       77    forwarding        10        32   disabled
1/1       88    not-connected     10        32   disabled
1/1       99    not-connected     10        32   disabled
1/2       1000  inactive          10        32   disabled
2/1       1000  inactive         100        32   disabled
2/2       1000  inactive         100        32   disabled
2/3       1     not-connected    100        32   disabled
2/4       1     not-connected    100        32   disabled
Console>

Related Commands

set spantree disable
set spantree enable
set spantree fwddelay
set spantree hello
set spantree maxage
set spantree portcost
set spantree portpri
set spantree priority

show system

Use the show system command to display the power supply, fan, temperature alarm, system, and modem status; the number of days, hours, minutes, and seconds since the last system restart; the baud rate; the MAC address range; and the system name, location, and contact.

show system

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows the system status and other information:

Console> show system
PS-Status  Fan-Status Temp-Alarm Sys-Status Uptime d,h:m:s Logout
---------- ---------- ---------- ---------- -------------- ---------
ok         ok         off        ok         1,23:10:38     none

Modem   Baud  Traffic Peak Peak-Time
------- ----- ------- ---- -------------------------
disable  9600   0%      0% Sun Apr 21 1996, 11:51:37

System Name              System Location          System Contact
------------------------ ------------------------ ------------------------
Console>

Related Commands

set system baud
set system contact
set system location
set system modem
set system name

show test

Use the show test command to display the results of diagnostic tests.

show test mod_num

Syntax Description

mod_num

The number of the module. If no number is specified, module 1 is used.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

The Network Management Processor only applies to module 1; therefore, only the display for module 1 includes the NMP status. If other modules are specified, the NMP status is not displayed.

Example

The following example shows how to display the test results for all tested modules:

Console> show test
Network Management Processor (NMP) Status: (. = Pass, F = Fail, U = Unknown)
  ROM:  .   RAM:  .   DUART: .   Flash-EEPROM: .   Ser-EEPROM: .   NVRAM: .
  FAN:  .   Temperature: .   MCP Comm: .
  PS (3.3V): .     PS (12V): .        PS (24V): .
8051 Diag Status for Module 1  (. = Pass, F = Fail, N = N/A)
 CPU         : .    Ext Ram 0: .    Ext Ram 1: .    Ext Ram 2: N
 DPRAM       : .    LTL Ram 0: .    LTL Ram 1: N    LTL Ram 2: N
 BootChecksum: .    CBL Ram 0: .    CBL Ram 1: N    CBL Ram 2: N
 Saints      : .    Pkt Bufs : .    Repeaters: N    Sprom    : .
 SAINT/SAGE Status :
  Ports 1  2  3 
  --------------
        .  .  .  
 Packet Buffer Status :
  Ports 1  2  3 
  --------------
        .  .  .  
System Diagnostic Status : (. = Pass, F = Fail, N = N/A)
 Module 1 : MCP
 EARL Status :
        NewLearnTest:         .
        IndexLearnTest:       .
        DontForwardTest:      .
        MonitorTest           .
        DontLearn:            .
        FlushPacket:          .
        ConditionalLearn:     .
        EarlLearnDiscard:     .
 PMD Loopback Status :
  Ports 1  2  3 
  --------------
        .  .  .

show time

Use the show time command to display the current time of day in the system clock.

show time

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the current time:

Console> show time
Wed Feb 22 1995, 18:32:36
Console>

Related Command

set time

show trunk

Use the show trunk command to display Interswitch Link information.

show trunk

Syntax Description

This command has no arguments or keywords.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display trunk information:

Console> show trunk
Port     Mode       Status        
-------  ---------  ------------  
1/1      on         trunking      
1/2      auto       not-trunking  
2/1      auto       not-trunking  
2/2      auto       not-trunking  
2/3      auto       not-trunking  
2/4      auto       not-trunking  
2/5      auto       not-trunking  
2/6      auto       not-trunking  
2/7      auto       not-trunking  
2/8      auto       not-trunking  
2/9      auto       not-trunking  
2/10     auto       not-trunking  
2/11     auto       not-trunking  
2/12     auto       not-trunking  

Port     Vlans allowed
-------  ---------------------------------------------------------------------
1/1      1-1000
1/2      1-1000
2/1      1-1000
2/2      1-1000
2/3      1-1000
2/4      1-1000
2/5      1-1000
2/6      1-1000
2/7      1-1000
2/8      1-1000
2/9      1-1000
2/10     1-1000
2/11     1-1000
2/12     1-1000

Port     Vlans active
-------  ---------------------------------------------------------------------
1/1      1,3,55
1/2      1
2/1      1
2/2      1
2/3      1
2/4      1
2/5      1
2/6      1
2/7      1
2/8      1
2/9      1
2/10     1
2/11     1
2/12     1
Console>

Related Commands

clear trunk
set trunk

show users

The show users command shows if the console port is active or not and lists all active Telnet sessions with the IP address or IP alias of the originating host.

show users [ noalias ]

Syntax Description

noalias

(Optional) Indicates not to display the IP alias; the IP address is displayed.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the users of the active Telnet sessions:

Console> show users
Console Port
------------
Active
Telnet Sessions
---------------
mercury
199.132.34.7
Console>

Related Command

disconnect

show version

Use the show version command to display software and hardware version information.

show version

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to display the software and hardware versions:

Console> (enable) show version
WS-C2900 Software, Version McpSW: 2.126 NmpSW: 2.126
Copyright (c) 1995,1996 by Cisco Systems
NMP S/W compiled on Apr 15 1996, 06:30:58
MCP S/W compiled on Apr 15 1996, 06:24:03
System Bootstrap Version: 2.112
Hardware Version: 1.81  Model: WS-X2900  Serial #: 002477455
Module Ports Model      Serial #   Hw     Fw     Fw1    Sw
------ ----- ---------- --------- ------ ------ ------ --------------------
1      2     WS-X2900   002477455 1.81   2.112  1.5    2.126
2      12    WS-X2903   002567322 1.4    1.2           2.126
8191K bytes of DRAM memory.
4096K bytes of FLASH memory.
256K bytes of non-volatile configuration memory.
Uptime is 1 day, 23 hours, 15 minutes

show vlan

Use the show vlan command to display virtual LAN information.

show vlan [ trunk ]
show vlan vlan [ notrunk ]

Syntax Description

trunk	(Optional) Specifies to display trunk ports.
vlan	The number of the VLAN to display.
notrunk	(Optional) Specifies not to display trunk ports.

Default

This command has no default setting.

Command Mode

Normal.

Usage Guidelines

Each Ethernet switch port and Ethernet repeater group belongs to only one VLAN.

Example

The following example shows how to display the ports assigned to all VLANs:

Console> show vlan
VLAN   Name                       Type  Status    Mod/Ports
----   -------------------------- ----- --------- ----------------
100001 default                    enet  active    1/2
                                                  2/1-12
100003 VLAN0003                   enet  active    
100088 vlan88                     tring active    
101003 token-ring-default         tring active    
101005 trnet-default              trnet active    
VLAN   SAID       MTU   RingNo BridgeNo StpNo Parent Trans1 Trans2
----__ ---------- ----- ------ -------- ----- ------ ------ ------
100001 1          1500  0      0        0     0      1003   1002
100003 3          1500  0      0        0     0      0      0
100010 10         1500  0      0        0     0      0      0
100011 11         1500  0      0        0     0      0      0
100055 85         1500  0      0        0     0      0      0
100066 102        4500  2900   0        0     2900   0      0
100088 88         1500  0      0        0     0      0      0
100099 99         1500  0      0        0     0      0      0
101002 1002       4500  0      0        0     0      1003   1
101003 1003       4500  0      0        0     0      1      1002
101004 1004       4500  0      1004     0     0      0      0
101005 1005       4500  0      1005     0     0      0      0
Console>

Related Commands

set vlan
set trunk
show trunk

show vtp

Use the show vtp (Virtual Trunk Protocol) command to display Virtual Trunk Protocol information.

show vtp
show vtp [ domain ]
show vtp [ statistics ]

Syntax Description

domain	Displays VTP domain information.
statistics	Displays VTP statistics.

Default

This command has no default setting.

Command Mode

Normal.

Example

Console> show vtp 
Show vtp commands:
-----------------------------------------------------------
show vtp domain                 Show VTP domain information
show vtp help                   Show this message
show vtp statistics             Show VTP statistics
Console> show vtp domain
 
Domain index         1
Domain name          catbox
VTP version          1
Local mode           client
Config revision      0
Last updater         172.20.25.127
Vlan count           6
Max vlan storage     256
Notifications        disabled
Console> show vtp statistics
VTP statistics:
summary advts received          1
subset  advts received          0
request advts received          30
summary advts transmitted       17
subset  advts transmitted       9
request advts transmitted       0
No of config revision errors    0
No of config digest errors      0

Related Commands

set vtp
set vtp domain
set vtp statistics
show vtp help

show vtp help

Use the show vtp command to display available Virtual Trunk Protocol commands.

show vtp help

Syntax Description

help

Displays available Virtual Trunk Protocol commands.

Default

This command has no default setting.

Command Mode

Normal.

Example

This example shows how to display Virtual Trunk Protocol commands.

Console> show vtp help
Show vtp commands:
-----------------------------------------------------------
show vtp domain                 Show VTP domain information
show vtp help                   Show this message
show vtp statistics             Show VTP statistics

Related Commands

show vtp
show vtp domain
show vtp statistics

s lip

Use the slip command to attach or detach Serial Line Interface Protocol (SLIP) for the console port.

slip attach | detach

Syntax Description

attach	Activates SLIP for the console port.
detach	Deactivates SLIP for the console port.

Default

By default, SLIP is not active (detached).

Command Mode

Privileged.

Usage Guidelines

You can use the slip command from a console port session or a Telnet session.

Example

The following example shows how to enable SLIP for a console port during a console port session:

Console> (enable) slip attach
Console port now running SLIP.

The following example shows how to disable SLIP for a console port during a Telnet session:

Console> (enable) slip attach
Console port now running SLIP.

Console> (enable) slip detach
SLIP detached on Console port.

Console> (enable)

Related Command

set interface

telnet

Use the telnet command to start a telnet connection to a remote host.

telnet host [ port ]

Syntax Description

host	The remote host to which you connect.
port	A specific port on the remote host to connect to.

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Privileged.

Example

Console> (enable) telnet help
Usage: telnet  [port]
       (host is ipalias or IP address in dot notation: a.b.c.d)
Console> (enable) telnet elvis
Trying 192.122.174.11...
Connected to elvis.
Escape character is '^]'.
UNIX(r) System V Release 4.0 (elvis)
login: fred
Password:
Last login: Thu Feb 15 09:25:01 from forster.cisc.rum
Sun Microsystems Inc.   SunOS 5.4       Generic July 1994
You have new mail.
% logout
Console> (enable)

Related Command

disconnect

test help

Use the test help command to display the test commands.

test help

Syntax Description

This command has no keywords or arguments.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to list the test commands:

Console> (enable) test help
Commands:
------------------------------------------------------------------------------
test help         Show this message
test snmp         Send trap message to SNMP trap receivers
Console> (enable)

test snmp trap

Use the test snmp trap command to send an SNMP trap message to the trap receivers.

test snmp trap trap_number [ specific_number ]

Syntax Description

trap_number	The number of the trap.
specific_number	(Optional) The number of a predefined trap.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to run trap 0:

Console> (enable) test snmp trap 0
SNMP trap message sent. (4)
Console> (enable)

Related Commands

clear snmp trap
set snmp trap
show snmp
test help

upload

Use the upload command to upload a code image to a network host.

upload host file [ module_num ]

Syntax Description

host	The IP address or IP alias of the host.
file	The name of the file.
module_num	(Optional) The number of the module. If no number is specified, the default is module 1.

Default

This command has no default setting.

Command Mode

Privileged.

Example

The following example shows how to upload the supervisor image to the c5009_11.bin file on the mercury host:

Console> (enable) upload mercury c5009_11.bin 3
Upload Module 1 image to c5009_11.bin on mercury (y/n) [n]? y
/
Done.  Finished Network Upload.  (153908 bytes)
Console> (enable)

Related Command

download

wait

Use the wait command to pause the CLI for a specified number of seconds. This command might be included in a configuration file.

wait seconds

Syntax Description

seconds

The number of seconds for the CLI to wait.

Default

This command has no default setting.

Command Mode

Normal.

Example

The following example shows how to pause the CLI for five seconds:

Console> wait 5
Console>

write

Use the write command to upload the current configuration to a host or to display it on the terminal.

write network
write terminal
write host file

Syntax Description

network	Initiates a script that prompts for the IP address or IP alias of the host and the file name to upload.
terminal	Displays the configuration file on the terminal.
host	The IP address or IP alias of the host.
file	The name of the file.

Default

This command has no default setting.

Command Mode

Privileged.

Usage Guidelines

The write terminal command is exactly the same as the show config command. The write host file command is a shorthand version of the write network command.

Example

Console> (enable) write term
......................................
begin
set password $1$FMFQ$HfZR5DUszVHIRhrz4h6V70
set enablepass $1$FMFQ$HfZR5DUszVHIRhrz4h6V70
set prompt cat9-lnf>
set length 100 default
set logout 0
!
#system
set system baud  9600
set system modem disable
set system name  cat9-lnf
set system location San Jose G-1
set system contact  Cal P.
!
#snmp
set snmp community read-only      public
set snmp community read-write     private
set snmp community read-write-all secret
set snmp rmon enable
set snmp trap disable module
set snmp trap disable chassis
set snmp trap disable bridge
set snmp trap disable repeater
set snmp trap disable vtp
set snmp trap disable auth
!
#ip
set interface sc0 3 172.20.25.132 255.255.0.0 172.20.255.255
set interface sl0 0.0.0.0 0.0.0.0
set arp agingtime 1200
set ip redirect   enable
set ip unreachable   disable
set ip fragmentation enable
set ip route 0.0.0.0         172.20.1.201    1
set ip alias default         0.0.0.0
set ip alias max             171.69.193.165
set ip alias cat7-lnf        172.20.25.130
set ip alias cat9-lnf        172.20.25.132
set ip alias da_bears        172.20.22.7
set ip alias atlas           172.20.1.201
set ip alias lnf             172.20.0.0
!
#Command alias
!
#bridge
set bridge ipx snaptoether   8023raw
set bridge ipx 8022toether   8023
#vtp
set vtp domain Cal mode server interval 300
set vlan 100001 name default type ethernet mtu 1500 said 1 state active ring 0 bridg0
set vlan 100003 name VLAN0003 type ethernet mtu 1500 said 3 state active ring 0 brid0
set vlan 100055 name vlan55 type ethernet mtu 1500 said 85 state active ring 0 brid0
set vlan 100088 name vlan88 type token_ring mtu 1500 said 88 state active ring 0 br0
set vlan 101003 name token-ring-default type token_ring mtu 4500 said 1003 state 0
set vlan10 1005 name trnet-default type tr_net mtu 4500 said 1005 state active ri0
set vlan 100001 translation 1003 translation 1002
set vlan 101002 translation 1003 translation 1
set vlan 101003 translation 1 translation 1002
!
#vlan
!
#trunks
set trunk 1/1  on 1-1000
set trunk 1/2  auto 1-1000
set trunk 2/1  auto 1-1000
set trunk 2/2  auto 1-1000
set trunk 2/3  auto 1-1000
set trunk 2/4  auto 1-1000
set trunk 2/5  auto 1-1000
set trunk 2/6  auto 1-1000
set trunk 2/7  auto 1-1000
set trunk 2/8  auto 1-1000
set trunk 2/9  auto 1-1000
set trunk 2/10 auto 1-1000
set trunk 2/11 auto 1-1000
set trunk 2/12 auto 1-1000
!
#cam
set cam agingtime 1    300
set cam agingtime 3    300
set cam agingtime 55   300
!
#cdp
set cdp enable   1/1-2,2/1-12
set cdp interval 1/1-2,2/1-12 60
!
#spantree
#vlan 1
set spantree enable         1
set spantree fwddelay 15    1
set spantree hello    2     1
set spantree maxage   20    1
set spantree priority 32768 1
#vlan 3 
set spantree enable         3
set spantree fwddelay 15    3
set spantree hello    2     3
set spantree maxage   20    3
set spantree priority 32768 3
#vlan 55
set spantree enable         55
set spantree fwddelay 15    55
set spantree hello    2     55
set spantree maxage   20    55
set spantree priority 32768 55
!       
#trunk  
set spantree portcost     1/1  10
set spantree portpri      1/1  32
set spantree portvlanpri  1/1  0
set spantree portfast     1/1  disable
set spantree portcost     1/2  10
set spantree portpri      1/2  32
set spantree portvlanpri  1/2  0
set spantree portfast     1/2  disable
set spantree portcost     2/1  10
set spantree portpri      2/1  32
set spantree portvlanpri  2/1  0
set spantree portfast     2/1  disable
set spantree portcost     2/2  10
set spantree portpri      2/2  32
set spantree portvlanpri  2/2  0
set spantree portfast     2/2  disable
set spantree portcost     2/3  10
set spantree portpri      2/3  32
set spantree portvlanpri  2/3  0
set spantree portfast     2/3  disable
set spantree portcost     2/4  10
set spantree portpri      2/4  32
set spantree portvlanpri  2/4  0
set spantree portfast     2/4  disable
set spantree portcost     2/5  10
set spantree portpri      2/5  32
set spantree portvlanpri  2/5  0
set spantree portfast     2/5  disable
set spantree portcost     2/6  10
set spantree portpri      2/6  32
set spantree portvlanpri  2/6  0
set spantree portfast     2/6  disable
set spantree portcost     2/7  10
set spantree portpri      2/7  32
set spantree portvlanpri  2/7  0
set spantree portfast     2/7  disable
set spantree portcost     2/8  10
set spantree portpri      2/8  32
set spantree portvlanpri  2/8  0
set spantree portfast     2/8  disable
set spantree portcost     2/9  10
set spantree portpri      2/9  32
set spantree portvlanpri  2/9  0
set spantree portfast     2/9  disable
set spantree portcost     2/10 10
set spantree portpri      2/10 32
set spantree portvlanpri  2/10 0
set spantree portfast     2/10 disable
set spantree portcost     2/11 10
set spantree portpri      2/11 32
set spantree portvlanpri  2/11 0
set spantree portfast     2/11 disable
set spantree portcost     2/12 10
set spantree portpri      2/12 32
set spantree portvlanpri  2/12 0
set spantree portfast     2/12 disable
!       
#module 1 
set module name    1    
set port enable    1/1-2
set port level     1/1-2  normal
set port duplex    1/1-2  half
set port trap      1/1-2  disable
set port name      1/1-2
!       
#module 2 
set module name    2    
set module enable  2
set port enable    2/1-12
set port level     2/1-12  normal
set port duplex    2/1-12  half
set port trap      2/1-12  disable
set port name      2/1-12
!       
#switch port analyzer
set span 1 1/1  both
set span disable
end     
Console>> (enable)

The following example shows how to upload the system5.cfg file to the mercury host using the write hostfile command as a shorthand method:

Console> (enable) write mercury system5.cfg
Upload configuration to system5.cfg on mercury (y/n) [y]? y
/
Done.  Finished Network Upload.  (9003 bytes)
Console> (enable)

Related Command

show config

all	Specifies every IP address in the ARP table.
ip_address	IP address in the ARP table to be cleared.

all	Specifies all previously set aliases of IP addresses.
name	Identifies a specific alias of an IP address.

all	Specifies every entry in the IP routing table.
destination	The IP address of the host or network.
gateway	The IP address or alias of the gateway router.

all	Specifies every entry in the SNMP trap receiver table.
rcvr_address	IP alias or IP address of the trap receiver (the SNMP management station).

Table of Contents