Configuring High System Availability

You do not need to use the slave sync config command when automatic synchronization is enabled, unless this is the first time you are installing a second RSP. For more information about this use of the slave sync config command, see the “Monitoring and Maintaining HSA Operation” section on page 40 .

Note Automatic synchronization mode is on by default. Therefore, unless you have disabled automatic synchronization a manual update is not required. For more information about automatic synchronization, see the “Ensuring that Both RSPs Contain the Same Configuration Files” section on page 28 .

To set environment variables on the standby RSP when automatic synchronization is on, use the following commands on the active RSP beginning in global configuration mode:

 

Command

Purpose

 

 

 

Step 1

Router(config)# boot system

(Optional) Specifies the system image that the router loads at

 

 

startup and stores it in the BOOT variable in the current running

 

 

configuration.

 

 

Note For a complete syntax description and usage guidelines,

 

 

refer to the Cisco IOS Configuration Fundamentals

 

 

Command Reference publication.

 

 

 

Step 2

Router(config)# boot bootldr file-url

(Optional) Specifies the Flash file system and file name that ROM

 

 

uses at startup and stores it in the BOOTLDR variable in the

 

 

current running configuration

 

 

 

Step 3

Router(config)# boot config file-url

(Optional) Specifies the location of the configuration file that the

 

 

router uses at startup and stores it in the CONFIG_FILE

 

 

environment variable in the current running configuration.

 

 

 

Step 4

Router(config)# end

Exits global configuration mode and returns you to privileged

 

 

EXEC configuration mode.

 

 

 

Step 5

Router# copy running-config startup-config

Saves the settings to the startup configuration. This also puts the

 

 

information under that RSP’s ROM monitor control.

 

 

 

Step 6

Router# show bootvar

Verifies the environment variable settings.

 

 

 

Monitoring and Maintaining HSA Operation

To monitor and maintain HSA operation, you can override the standby image that is bundled with the active image by using the following command in global configuration mode:

Command

Purpose

 

 

Router(config)# hw-module slot image

Specifies which image the standby runs.

 

 

Note The slave image system command, previously used to determine which image the standby runs, is not valid with newer images containing HA features.

Route Switch Processor (RSP8) Installation and Configuration Guide

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Cisco Systems RSP8 manual Monitoring and Maintaining HSA Operation, Information under that RSP’s ROM monitor control