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Configuring Ethernet and Fast Ethernet Software
This chapter describes the procedure used to configure the Fast Ethernet ports on the supervisor engine module, the Fast Ethernet switching module, and the Ethernet switching module using the command line interface
The features you can customize have default values that will most likely suit your environment and probably need not be changed. The default values of these features are set as follows:
As the default configuration, all Ethernet and Fast Ethernet ports are enabled. To configure these ports, complete the tasks in the following sections:
Refer to the end of this chapter for switch configuration examples.
Assign a name to each port. To set a port name, perform the following tasks in privileged mode:
| Task | Command |
|---|---|
| Configure a name for a port. Figure 4-1 shows an example of the set port name command. | set port name mod_num/port_num [name_string] |
| Verify that the port name is correct. Figure 4-2 shows a sample display of the show port command. Port names are listed in the Name column. | show port mod_num/port_num |
Figure 4-1 : set port name Command Example
Console> (enable) set port name 1/1 Router Connection
Port 1/1 name set.
Console> (enable) set port name 1/2 Server 1
Port 1/2 name set.
show port Command Display Example
Console> (enable) show port Port Name Status Vlan Level Duplex Speed Type ---- -------------------- -------- -------- ------ ------ ----- ------- 1/1 Router Connection ready 2 high half 100 100BaseTX 1/2 Server 1 ready 1 high half 100 100BaseTX 2/1 ready 10 normal half 10 10BaseT 2/2 disabled 10 normal half 10 10BaseT 2/3 connect 10 normal half 10 10BaseT 2/4 connect 10 normal half 10 10BaseT . . . 2/23 0 0 0 0 0 0 2/24 0 0 0 0 0 0 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> Port Name Status Vlan Level Duplex Speed Type ---- -------------------- ---------- ---------- ------ ------ ----- -------------- 1/1 Management Port notconnect 1 normal half 100 100 BASE-TX 1/2 InterSwitchLink connected trunk normal half 100 100 BASE-TX 2/1 Dennis connected 10 normal a-half a-10 10/100 BASE-TX 2/2 Luis notconnect 10 normal auto auto 10/100 BASE-TX 2/3 Iris notconnect 10 normal auto auto 10/100 BASE-TX 2/4 Nancy connected 10 normal a-half a-10 10/100 BASE-TX 2/5 Arthur notconnect 20 normal auto auto 10/100 BASE-TX 2/6 Ron notconnect 20 normal auto auto 10/100 BASE-TX 2/7 Connie disabled 20 normal auto auto 10/100 BASE-TX 2/8 Bill notconnect 20 normal auto auto 10/100 BASE-TX 2/9 notconnect 20 normal auto auto 10/100 BASE-TX 2/10 notconnect 20 normal auto auto 10/100 BASE-TX 2/11 notconnect 20 normal auto auto 10/100 BASE-TX 2/12 notconnect 20 normal full 10 10 BASE-T Port Align-Err FCS-Err Xmit-Err Rcv-Err ---- ---------- ---------- ---------- ---------- 1/1 0 0 0 0 1/2 1 0 0 0 2/1 0 0 0 0 2/2 0 0 0 0 2/3 0 0 0 0 2/4 30 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 Giants ---- ---------- ---------- ---------- ---------- ---------- ---------- 1/1 0 0 0 0 0 0 1/2 680 418 0 1 0 - 2/1 756 99 0 0 0 0 2/2 0 0 0 0 0 0 2/3 0 0 0 0 0 0 2/4 409 403 0 11 0 1256 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 -------------------------- Wed Dec 27 1995, 16:09:47 Console> (enable)Setting the Port Priority Level
| Task | Command |
|---|---|
| Configure the priority level for each port. Figure 4-3 shows an example of the set port level command. | set port level mod_num/port_num normal | high |
| Verify that the port priority level is correct. Figure 4-2 shows a sample display of the show port command. Port priority levels are listed in the Level column. | show port mod_num/port_num |
Figure 4-3 : set port level Command Example
Console> (enable) set port level 1/1 high
Port 1/1 level set to high.
Console> (enable) set port level 1/2 high
Port 1/2 level set to high.
Setting the Port Speed
Configure the port speed for the 100BaseTX ports on the 10/100 Mbps Fast Ethernet Switching module if desired. To set the port speed for a port, perform the following steps in privileged mode:
| Task | Command |
|---|---|
| Set the port speed of a port. Figure 4-4 shows an example of the set port speed command. | set port speed <mod_num/port_num> <10|100|auto> |
| Verify that the port speed has been set correctly. | show port mod_num/port_num |
Figure 4-4 : set port speed Command Example
Console> (enable) set port speed
Usage: set port speed <mod_num/port_num> <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.
Setting the Port Transmission Type
Set the transmission type to full or half duplex for the ports that will be used. To set the transmission type of a port, perform the following steps in privileged mode:
| Task | Command |
|---|---|
| Set the transmission type of a port. Figure 4-5 shows an example of the set port duplex command. | set port duplex mod num/port num full | half |
| Verify that the transmission type has been set correctly. Figure 4-2 shows a sample display of the show port command. The transmission type is listed in the Duplex column. | show port mod_num/port_num |
Figure 4-5 : set port duplex Command Example
Console> (enable) set port duplex 2/1 half
Port 2/1 set to half-duplex.
Console> (enable) set port duplex 2/2 half
Port 2/2 set to half-duplex.
Multiple Switch VLAN Configuration Example
VLAN groups can be set up across multiple Catalyst 2900 if the switches have any two ports of the same VLAN connected, as shown in the example in Figure 4-7. You need to configure the VLANs individually for both switches using the set vlan command.
Figure 4-6 : Multiple Catalyst 2900 VLAN Configuration
The VLANs for the Catalyst 2900 on the first floor were configured as follows:
system1> (enable) set vlan 10 2/1-4 VLAN 10 modified. VLAN 1 modified. VLAN Mod/Ports 10 2/1-4 system1> (enable) set vlan 20 2/5-14 VLAN 20 modified. VLAN 1 modified. VLAN Mod/Ports 20 2/5-14VLANs for the Catalyst 2900 on the second floor were configured as follows:
system2> (enable) set vlan 10 2/1-7 VLAN 10 modified. VLAN 1 modified. VLAN Mod/Ports 10 2/1-7 system2> (enable) set vlan 30 2/8-14 VLAN 30 modified. VLAN 1 modified. VLAN Mod/Ports 30 2/8-14
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