Installation

This chapter provides detailed hardware installation and configuration instructions for SwitchProbe devices. Included are detailed instructions for any configuration tasks you might need to perform before connecting the SwitchProbe device to the network. From basic site requirements, to working with various types of network interfaces, this chapter includes all the information you need to install your SwitchProbe device on the network segment you want to monitor. First, there is an overview to help you determine which steps are required, and then the specific steps are provided in detail.

Caution  To prevent possible damage to the SwitchProbe device, be sure to read the "Site Requirements" section.

Basic Installation Steps

Although this chapter includes information to familiarize yourself with the SwitchProbe model you have, Table 3-1 lists the basic steps for connecting your SwitchProbe device to the network. Use the following table as a guide to ensure you perform all necessary steps for proper installation of your SwitchProbe device. If you are already familiar with SwitchProbe, you can use this table to turn directly to the steps you want to perform. But if you are new to the SwitchProbe device, read the entire chapter, and use this table as a checklist to ensure that you complete all the steps needed for proper configuration and installation of your SwitchProbe device.

Unpacking

Before unpacking the carton, ensure that there is no visible damage. Notify the carrier representative if there is damage, and arrange for a representative to be present while the carton is unpacked.

After opening the shipping carton and removing the unit, inspect it for any obvious damage that might have occurred during shipment. If any damage is present, file a claim with the carrier.

Inspect the carton contents to make sure you have received the following:

• Cisco SwitchProbe

• Power cord (optional outside the United States)

• SwitchProbe Installation and Configuration Guide

Each SwitchProbe unit has specific accessories. These are shown in Table 3-2.

Site Requirements

The SwitchProbe device is intended to operate in a normal office environment and should be table mounted near the network segment it serves. The site must be equipped as follows:

• 110 to 230 VAC power source within 7 feet of the unit

• The appropriate physical connection to the network segment used to communicate with the management software

• The appropriate physical connection to the network link to be monitored

Warning  Do not work on the system or connect or disconnect cables during periods of lightning activity.

Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 104°F (40°C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings.

Warning Only trained and qualified personnel should be allowed to install or replace this equipment.

Caution Adequate ventilation must be provided with at least 6 inches of clearance at the rear and front so the fan can exhaust air from the unit.

Caution Before plugging the power cord into the unit and the power source, verify that the power source to be used is compatible with the power supply requirements.

Warning A voltage mismatch can cause equipment damage and may pose a fire hazard. If the voltage indicated on the label is different from the power outlet voltage, do not connect the chassis to that receptacle.

Determining Configuration Tasks

Depending on your needs and situation, you might not need to perform any configuration tasks for your SwitchProbe device. However, you might have to perform a few steps to correctly configure your SwitchProbe device. To determine configuration tasks, make sure you read this section completely.

All SwitchProbe devices must have the following information to communicate with the TrafficDirector software application or other management software:

• IP address of the SwitchProbe device management interface you are physically connecting to the network segment you want to monitor

• Net mask for the segment subnet

• Gateway address for the segment

If you have a BOOTP server available, you can configure the server to assign the SwitchProbe device the above information, and you might not have to perform any configuration tasks before connecting the SwitchProbe device to the network. If you do not have a BOOTP server available, you must manually configure these parameters before connecting it to the network segment. Depending on the SwitchProbe model and the network segment you are attaching it to, you might also need to configure additional parameters before installing the SwitchProbe device.

• The SwitchProbe device has a Token Ring interface, and the speed of the Token Ring network it is attached to is 16 Mbps.

• There is a BOOTP server configured to assign to the SwitchProbe agent an IP address, network mask, and gateway address.

• If the SwitchProbe has a WAN interface, the speed of the WAN network it is attached to is 1250 kbps, and the network is using the Cisco High-Level Data Link Control (HDLC) encapsulation protocol.

If all of these criteria are met, refer to the "Unpacking" section in this chapter. Otherwise, you must configure either the management interface or the monitor interface before connecting the SwitchProbe device to the network.

Management Interface-Before connecting the management interface to the network, you must use a null-modem cable and an ASCII terminal attached to the console serial port to make configuration changes to the SwitchProbe device. Depending on your needs, you might make the following configuration changes:

• If the network speed is 4 Mbps (only on Token Ring interfaces), set the interface speed.

• If you want in-band management on an interface other than Interface 1, change the management interface.

• If you do not have a BOOTP server, set the IP address, network mask, and gateway address.

• If the network speed is not 1250 kbps (only on WAN interfaces), set the interface speed.

• If the network encapsulation protocol is not Cisco HDLC (only on WAN), set the encapsulation protocol.

ASCII Terminal Procedure

An ASCII terminal must be used to configure the agent under any of the following conditions:

• The management interface is Token Ring and not already set to the correct ring speed (4 or 16 Mbps).

• You want to use an interface other than Interface 1 for management, and the management software cannot reach the SwitchProbe device through Interface 1.

• A BOOTP server is not available and configured to automatically assign an IP address, network mask, and gateway address to the agent.

• An asynchronous data terminal with the following characteristics:

  • 9600 bps. The bit rate of the data terminal must match the bit rate of the console port on the SwitchProbe device. The bit rate of the console port can be changed as described in the "Crossover Cable Type" section on the "Connecting to the Network" chapter.

  • No parity.

  • 1 stop bit.

  • 8 data bits.

• An EIA/TIA-232 null-modem (crossover) cable to connect the terminal to the console port of the SwitchProbe device. The cable connector that attaches to the console port must be a DB-9 female. An example of wiring for a crossover cable is shown in Figure 2-13.

Connecting the data terminal to the console port is described in the following procedure:

Step 1 Make sure the SwitchProbe device is turned off. (The power LED on the front panel should be off.) Do not connect to the network at this time.

Warning Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.

Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units.

To see the warnings in multiple languages, refer to the appendix, "Translated Safety Warnings."

Step 2 Make sure the SwitchProbe device is not connected to the network.

Step 3 Connect the data terminal to the console port of the SwitchProbe device using the null-modem cable. If the connector on the cable is not compatible, an adapter has to be used to match the cable and the debug port connector. Ensure that the screws are tight on both the adapter, the debug port connector, and the cable.

Step 4 Turn on the data terminal.

Step 5 Turn on the SwitchProbe device.

Power-Up Sequence

The power switch is on the front panel. After you power up the SwitchProbe device, it undergoes a set of self-tests before it actually boots. During a normal power-up or reset, you should see the following sequence:

1. All LEDs turn on at power-up. System diagnostics run for about 30 seconds.
   
   
2. A short beep signals that the system diagnostics are complete. The error (red) and network activity (amber) LEDs turn off briefly, then display the agent status as described in Table 2-1. If the error and network activity LEDs do not turn off and remain off, there is a hardware problem with the SwitchProbe device. For further assistance, contact technical support.
   
   
3. The agent sends status information to the data terminal, if one is connected. A message similar to the following should be displayed:
   

<12:19:48> ----------New Boot---------- 
<12:19:48> Booting from flash 
<12:19:48> Interface 1: Ethernet
<12:19:48> Interface 2: SLIP 
<12:19:48> Free memory after boot = 7225600 Bytes 
<12:19:51> Number of consoles initialized = 3
<12:19:51> Start agent interfaces..
<12:19:51> Opening port 2 for SLIP
<12:19:51> ifn 1 MAC Addr: 00-80-8c-22-33-01
<12:19:51> Control entry: Count = 256, Size of each 908
<12:19:51> Proxy function enabled
<12:19:51> AGENT Version 4.1.0
<12:19:51> NVRAM Version 4.1
<12:19:51> Link time Sep 24 19:09:07 97
<12:19:51> Interface [1] IP Addr: 204.240.143.122
<12:19:52> 			Net mask: 255.255.255.0
<12:19:52> 	GW Addr: 204.240.143.87
<12:19:52> Interface [2] IP Addr: Not configured
<12:19:52> 			Net mask: Not configured
<12:19:52> 	GW Addr: Not configured
<12:19:53> Agent Ready
<12:19:53> Free Memory after init = 6371284 Bytes
Hit any key to enter configuration utility.

1. If you press any key, text similar to the following should be displayed:
   

***** Token Ring SwitchProbe Rev 4.1 ***** 
Interface number :1
[1] Change IP Address 	204.240.143.117
[2] Change Net Mask	255.255.255.0
[3] Change Default Gateway Address	204.240.143.1
[4] Change Read Community	sqa
[5] Change Write Community	sqa
[8] Select Interface	ETHERNET
[9] Change Server Address	204.240.143.7
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
[31] Go to Next Page
Enter your response or Enter "exit" to logout
Selection#:

Changing the Token Ring and WAN Interface Speed

If the SwitchProbe model has a Token Ring or WAN interface, you must set that interface speed to match the speed of the network before you connect it, or it might interfere with network operation. Follow the steps in this section only for Token Ring or WAN. You must repeat these steps for each Token Ring or WAN.

Step 1 Access the Agent Configuration Utility by using the agent console or Remote Login function in the TrafficDirector application. You should see text similar to the following (the model number, revision, and some menu items might differ):

***** Token Ring SwitchProbe Rev 4.1 *****
Interface :1

[1] Change IP Address 204.240.143.113
[2] Change Net Mask 255.255.255.0
[3] Change Default Gateway Address 204.240.143.1
[4] Change Read Community public
[5] Change Write Community public

[8] Select Interface ETHERNET
[9] Change Server Address 204.240.143.16
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent

[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection #:
11 12

Step 2 Before you can change the speed of the interface, you must select the correct interface. The selected interface is shown across from menu item 8, Select Interface. If the correct interface is already selected, skip to Step 4. In this example, the selected interface is Ethernet. Prepare to change the selected interface by entering 8 and pressing Enter.

***** Token Ring SwitchProbe Rev 4.1 *****

Selection# 8

Select the interface:

[1] ETHERNET MODE = MANAGE
[2] SERIAL MODE = MANAGE
[3] WAN MODE = MONITOR

New interface [1]

Step 3 Select the item that corresponds to the Token Ring or WAN interface. In this example, enter 3 and press Enter to select the Serial interface. An abbreviated menu is displayed:

***** Token Ring SwitchProbe Rev 4.1 *****

New interface : 3

[6] Change Interface Speed 64
[7] Change Encapsulation Protocol PPP
[8] Select Interface WAN

[11] Enter Command-line mode
[12] Reset Agent

[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection #:

Step 4 Set the speed of the selected interface by entering 6 and pressing Enter. If you are changing the speed of the Token-Ring interface, enter the desired speed in Mbps. For the WAN interface, enter the desired speed in kbps. The following example illustrates changing the interface speed from 1544 kbps to 56 kbps:

Enter Link Speed in kbits per second.

New Interface Speed [64] : 1544

***** Token Ring SwitchProbe Rev 4.1 *****

Interface number :3

[6] Change Interface Speed 1544
[7] Change Encapsulation Protocol PPP
[8] Select Interface WAN

[11] Enter Command-line mode
[12] Reset Agent

[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection #:

Step 5 Reset the agent by entering 12 and pressing Enter. When prompted, enter y and press Enter. The agent resets.You do not have to reset the agent after each setting change, but the settings do not take effect until the agent is reset.

Selection#: 12
WARNING : agent will be reset, confirm [y] y

Changing the Encapsulation Protocol (WAN Only)

If the SwitchProbe has a WAN interface, the default encapsulation protocol must match the encapsulation protocol of the network that you connect it to. If it does not, you must change the default encapsulation protocol using the following procedure.

Step 1 Access the Agent Configuration Utility by using the agent console or Remote Login function in TrafficDirector. You should see text similar to the following: (The model number, revision, and some menu items might differ.)

Step 2 Select the correct interface. The selected interface is shown across from menu item 8, Select Interface. If the correct interface is already selected, skip ahead to Step 4. In this example, the selected interface is Ethernet. Prepare to change the selected interface by entering 8, and pressing Enter.

Selection#: 8

Select Interface :

[1] ETHERNET MODE = MANAGE
[2] SERIAL MODE = MANAGE
[3] WAN MODE = MONITOR

New Interface (1) :

Step 3 Select the item that corresponds to the WAN interface. In this example, enter 3, and press Enter to select the WAN interface. An abbreviated menu is displayed.

*****SwitchProbe 4.1*****

Interface number : 3

[6] Change Interface Speed 64
[7] Change Encapsulation Protocol PPP
[8] Select Interface WAN

[11] Enter Command-line mode
[12] Reset Agent

[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection #:

Step 4 Prepare to set the encapsulation protocol by entering 7, and pressing Enter.

Multiple Interface Operation

SwitchProbe devices support multiple interfaces:

Out-of-band management means a LAN interface monitors traffic, and the serial interface is used for management access.

In-band management means a LAN interface is used for management communication on the same network it is monitoring.

All SwitchProbe devices have a LAN interface as Interface 1 in manage mode for communication to the management software. In some SwitchProbe devices, this interface can be configured to simultaneously monitor the LAN segment it is attached to. All SwitchProbe devices also support out-of-band management through a serial interface in manage mode, running SLIP.

CDDI, FDDI, and half-duplex Fast Ethernet SwitchProbe models support optional in-band management through their respective high-speed interfaces. Refer to the "Installation" chapter for information on activating manage and monitor modes.

Table 3-2 shows the possible configurations for each SwitchProbe model. If manage mode is supported, man is shown. If monitor mode is supported, mon is shown. The default setting is shown in boldface type.

Accessing the Agent Configuration Utility

When a SwitchProbe device is first installed, the agent starts running with no further action. However, you might want to initialize certain parameters before proceeding further. To do so, use the TrafficDirector Configuration Utility.

• Local Access. Local access involves connecting an ASCII terminal to the SwitchProbe Console port using a null-modem cable. You might do this to initially configure a new SwitchProbe device before connecting to the network or to enable advanced agent options such as Traffic Generator and Packet Capture. For a detailed explanation of local access using an ASCII terminal, see the "ASCII Terminal Procedure" section in the "Installation" chapter.

• Remote Access. Using the TrafficDirector Global Remote Login feature, you can configure the agent remotely from the client console. (See the Using TrafficDirector publication for details on remote login.)

Understanding Console Menus

Once you access the agent console, the TrafficDirector Configuration Utility menu is displayed. The main menu consists of two displays. Figure 3-1 shows the first page of menu items you see upon initial access, whether local or remote. You select a menu item by entering the corresponding number, and pressing Enter.

*****SwitchProbe Rev 4.1*****
Interface number : 1
[1] Change IP address	204.240.143.122
[2] Change Net Mask	255.255.255.0
[3] Change Default Gateway Address	204.240.143.6
[4] Change Read Community		public
[5] Change Write Community	public
[8] Select Interface	ETHERNET
[9] Change Server Address	204.240.143.9
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
[31] Go to Next Page
Enter your response or Enter "exit" to logout
Selection #:

By selecting 31 Go to Next Page, the second page of the main console is displayed (Figure 3-2).

*****SwitchProbe Rev 4.1 *****
Interface number : 1
[13] Install Resource Monitor	Installed
[14] Install Proxy RMON Collector	Not Installed
[15] Install NetFlow Monitor	Not Installed
[16] Select Switch Device Type	RMON Device
(17) Change Device IP Address	204.240.143.196
[18] Change Device Read Community	public
[19] Change Device Poll Interval (secs)	5
[20] Change RMON parameters
[21] Change RMON2 parameters
[22] Configure Agent Options
[23] Configure Traffic Generator
[24] Configure Interface Options
[32] Go to Previous Page
Enter your response or Enter "exit to logout
Selection #:

Other selections result in menu displays that show additional configuration options, such as 22 Configure Agent Options (Figure 3-3).

Selection #: 22
*****SwitchProbe Rev 4.1 *****
Agent Option Menu:
[1] Toggle router_discovery	on
[2] Toggle router_enable	off
[3] Toggle modem_log	off
[4] Toggle slip_ip	off
[5] Toggle packet_capture	on
[6] Toggle traffic_generator	off
[7] Toggle discover_wanspeed	off
[8] Go to Main Menu
Selection #:

Some menu items prompt you for an immediate entry after selecting them, such as item 4 Change Read Community (Figure 3-4).

Selection #: 1
*****SwitchProbe Rev 4.1 *****
Agent Option Menu:
[1] Change IP Address	204.240.143.103
[2] Change Net Mask	255.255.255.0
[3] Change Default Gateway Address	204.240.143.1
[4] Change Read Community	public
[5] Change Write Community	public
[8] Select Interface	ETHERNET
[9] Change Server Address	204.240.143.12
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
[31] Go to Next Page
Enter your response or Enter "exit" to logout
Selection #:4
New Read Community (public) :

Throughout many of the procedures in this book, you need to access the Agent Configuration Utility and navigate through various menu displays to configure your SwitchProbe device to best suit your monitoring needs.

In-Band Management

You can manage CDDI, FDDI, and half-duplex Fast Ethernet SwitchProbe devices in-band through their respective interfaces. The Ethernet and the Token Ring SwitchProbe defaults to management through the Ethernet interface, but you can change the default to the Token Ring interface. Table 1-1 lists the available management options for each model.

The default setting is monitor-only on the high-speed (CDDI, FDDI, or half-duplex Fast Ethernet) interface. The following example shows how to enable in-band management by setting the high-speed interface to manage+monitor mode and setting the LAN interface (Ethernet or Token Ring) to monitor-only mode.

Restrictions on Manage Mode

Manage mode cannot be disabled on the Serial Line Internet Protocol (SLIP) interface.

In-Band Management Procedure

This procedure involves issuing a number of commands from the command line. For more detailed information on command-line mode, refer to the "Command-Line Mode" chapter.

Step 1 Access the Agent Configuration Utility by using the agent console or Remote Login function in the TrafficDirector application. You should see text similar to the following: (The model name, revision number, and some menu items might differ.)

***** SwitchProbe CDDI Rev 4.1 *****
Interface number :1

[1] Change IP Address 204.240.143.103
[2] Change Net Mask 255.255.255.0
[3] Change Default Gateway Address 204.204.143.1
[4] Change Read Community public
[5] Change Write Community public

[8] Select Interface ETHERNET
[9] Change Server Address 204.240.143.12
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection#:4
New Read Community [public] :

Step 2 Check the current management and monitor settings. Enter 8 and press Enter.

Selection# 8

Select the interface :
[1] ETHERNET MODE = MANAGE + MONITOR
[2] SERIAL MODE = MANAGE
[3] TOKEN_RING MODE = MONITOR
New interface [1] :

Step 3 Select the interface for which you wish to view or change the settings. Enter 3 and press Enter to select the FDDI interface.

New interface [1] : 3

***** SwitchProbe FDDI Rev 4.1 *****
[8] Select Interface FDDI
[9] Change Server Address Not configured
[11] Enter Command-line mode
[12] Reset Agent

Enter your response or hit ESC to Abort
Selection#:

Step 4 Select 11, Enter Command-Line Mode and press Enter. You see a % prompt.

Selection#: 11
Enter "quit" to exit the command-line mode.
%

Step 5 Use the get command to display nonvolatile random-access memory (NVRAM) parameters. The object for manage mode is manage_mode. The setting can be either 0 or 1; 0 means that the manage bit is turned off; 1 means that the manage bit is turned on. The following command reports the state of Interface 3, CDDI, because it was selected in Step 3. The SwitchProbe agent returns a 0 to show that manage mode is turned off.

% get manage_mode
0

Step 6 Use the set command to change NVRAM parameters. The following command turns on manage mode.

% set manage_mode 1

Step 7 Now that manage mode is enabled on Interface 3, it must be disabled on Interface 1. The manage_mode object affects the currently selected interface. To turn off manage mode on Interface 1, you must first select it using the curr_interface object. Use the set command to select Interface 1.

% set curr_interface 1

Step 8 Use the set command and manage_mode object to turn off management mode for Interface 1.

% set manage_mode 0

Step 9 Configure the address of the high-speed (in this example, CDDI) connection. Follow the steps in the "Network Address and Mask" section to set the IP address, subnet mask address, and default gateway address for Interface 3. Make sure that Interface 1 and Interface 3 are on different subnets.

Step 10 Enter quit (in lowercase) to quit command-line mode.

Step 11 You do not have to reset the agent after each setting change, but the settings do not take effect until the agent has been reset. Reset the agent by entering 12 and pressing Enter. When prompted, enter y and press Enter. The agent resets.

Selection#: 12
WARNING : agent will be reset, confirm [y] y

Once the reboot is complete, the SwitchProbe device is configured for management in-band through the CDDI, FDDI, or half-duplex Fast Ethernet interface.

Once the reboot is complete, the SwitchProbe device is ready for in-band management through the FDDI, CDDI, or half-duplex Fast Ethernet interface.

To start a new Remote Login session for the agent, perform one of the following tasks:

• Edit the agent's definition to include the new IP address before starting the new Remote Login session.

• Add a new agent to the TrafficDirector program using the new IP address.

Default Domain Configuration

Cisco SwitchProbe automatically install the RMON domain, as well as 26 RMON2 protocol domains upon boot up. Note that you cannot de-install network-layer protocol domains that the probe installs automatically. Instead, when you remove a network-layer protocol domain, host and conversation groups are disabled for the protocol domain, and the domain remains installed on the agent with only the statistics group enabled. Table 3-4 shows the list of protocol domains the probe automatically installs upon reset.

Configuring RMON and RMON2 Parameters

You can configure default RMON/RMON2 parameters contained in the probe when it boots up. The configuration you specify applies to all probe interfaces. For example, if you set max_host to a maximum of 10,000, each interface can track statistics for 10,000 hosts. Table 3-5 shows the RMON parameters you can configure.

Table 3-6 shows the RMON2 parameters you can configure.

Configuring Default RMON/RMON2 Parameters

Use the following procedure to configure RMON/RMON2 parameters for all probe interfaces.

Step 1 Access the Agent Configuration Utility.

Step 2 Select [31] Go to Next Page.

Step 3 Do one of the following:

(a) To configure RMON1 parameters for the selected interface, select [20] Change RMON Parameters.

or

(b) To configure RMON2 parameters for the selected interface, select [21] Change RMON2 Parameters.

Step 4 Do one of the following:

(a) If you selected [20] Change RMON Parameters, select the RMON parameter you want to configure as explained in Table 3-5.

or

(b) If you selected [21] Change RMON2 Parameters, select the RMON2 parameter you want to configure as explained in Table 3-6.

Step 5 From the main menu, select [12] Reset Agent for the new settings to take effect.

Network Address and Mask

Before the agent can communicate with the management software, you must configure the management interface with the following parameters:

• IP address of the node

• Net mask for the segment subnet

• Gateway address for the segment

If you have a BOOTP server, this can be done automatically. For details, see the "Using BOOTP for Automatic Configuration" section in this chapter. If you do not have a BOOTP server or you want to change these settings manually, follow the procedure in this section.

Step 1 Access the Agent Configuration Utility by using the agent console or Remote Login function in SwitchProbe Manager. You should see text similar to the following (the model name, revision number, and some menu items might differ):

***** SwitchProbe CDDI Rev 4.1 *****
Interface number :1

[1] Change IP Address 204.240.143.103
[2] Change Net Mask 255.255.255.0
[3] Change Default Gateway Address 204.204.143.1
[4] Change Read Community public
[5] Change Write Community public

[8] Select Interface ETHERNET
[9] Change Server Address 204.240.143.12
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
[31] Go to Next Page

Enter your response or Enter "exit" to logout

Selection#:4

Step 2 Change the IP address of the agent by entering 1 and pressing Enter. The agent prompts you to enter the new address. Enter the address and press Enter. The following example illustrates changing the IP address to 45.20.1.2:

Selection#: 1
New IP Address [0.0.0.0] : 45.20.1.2
Warning: Net mask changed to conform to ip_addr

Step 3 Change the subnet mask of the agent by entering 2 and pressing Enter. The agent prompts for the new subnet mask. Enter it and press Enter. The following example illustrates changing the subnet mask to 255.255.252.0:

Selection#: 2
New Net Mask Address [255.0.0.0] : 255.255.252.0

Step 4 Change the default gateway address of the agent by entering 3 and pressing Enter. The agent prompts for the new address. Enter it, and press Enter. The following example illustrates changing the default gateway address to 45.20.0.94:

Selection#: 3
New Default Gateway Address [0.0.0.0] : 45.20.0.94

Step 5 Make sure that the settings are correct by examining the menu carefully. Repeat any steps necessary before preceding to the next step.

***** Token Ring SwitchProbe Rev 4.1 *****
[1] Change IP Address 45.20.1.2
[2] Change Net Mask 255.255.252.0
[3] Change Default Gateway Address 45.20.0.94
[4] Change Read Community public
[5] Change Write Community public

[8] Select Interface ETHERNET
[9] Change Server Address Not configured
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
Enter your response or Enter "exit" to logout
Selection#:

Step 6 You do not have to reset the agent after each setting change, but the settings do not take effect until the agent is reset. Reset the agent by entering 12 and pressing Enter. When prompted, enter y and press Enter. The agent resets.

Selection#: 12
WARNING : agent will be reset, confirm [y] y

Using BOOTP for Automatic Configuration

SwitchProbe agent supports BOOTP, which eliminates the need for configuration through the Console port, unless the Token Ring speed must be changed. You might want to follow the ASCII terminal procedure if you need to change the interface speed or to use in-band management on a high-speed (CDDI, FDDI, or Fast Ethernet) interface.

Before turning the SwitchProbe device on, a BOOTP server should be set up. If a BOOTP server is not set up, then use the ASCII terminal procedure detailed in this chapter for configuration. Connect the agent to the network using the interface in manage mode, and turn on the power. When the agent is powered up and completes its internal checkout, it sends out BOOTP requests every 30 seconds if the IP address was not configured.

If the agent needs to be reconfigured because the network address, subnet mask, or gateway address changed, then invalidate the old IP address to force the agent to begin sending out BOOTP requests again. The following procedure describes how to invalidate the IP address when the agent needs to be reconfigured:

Step 1 Access the Agent Configuration Utility by using the agent console or Remote Login function in the TrafficDirector application.

Step 2 Select option 11, Enter Command-line mode. The command-line prompt is displayed.

Selection #: 11
Enter "quit" to exit command-line mode
%

Step 3 Enter set ip_valid no. This tells the SwitchProbe agent that the IP address is invalid, and causes it to send out BOOTP requests.

Step 4 Enter quit (in lowercase) to quit command-line mode.

Step 5 Enter exit (in lowercase) to exit the Remote Login utility.

Step 6 You do not have to reset the agent after each setting change, but the settings do not take effect until the agent has been reset. Reset the agent by entering 12 and pressing Enter. When prompted, enter y and press Enter. The agent resets.

Selection#: 12
WARNING : agent will be reset, confirm [y] y

Update Procedure

SwitchProbe devices are shipped with the latest version of firmware already installed. TrafficDirector client software also includes a copy of the latest version of the agent firmware. Should a new version become available, it might be necessary to upgrade the agent firmware.

The software required for the operation of the SwitchProbe device is included on nonvolatile Flash EPROM memory. If needed upgrade the system by loading a new software image to the Flash EPROM using Trivial File Transfer Protocol (TFTP).

TFTP support in agents is used explicitly for upgrading the agent software over the LAN interface. All such upgrades can be done from any TFTP server (such as a Sun SPARCstation having the TFTP daemon turned on in the /etc/inetd.conf file and a /tftpboot directory present).