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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
Automatic synchronization mode is on by default. Therefore, unless you have disabled automatic
Note
synchronization a manual update is not required. For more information about automatic synchronization,
see the
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
Step 1
Router(config)# boot system
Step 2
Router(config)# boot bootldr file-url
Step 3
Router(config)# boot config file-url
Step 4
Router(config)# end
Step 5
Router# copy running-config startup-config
Step 6
Router# show bootvar
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
Router(config)# hw-module slot image
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
40
"Ensuring that Both RSPs Contain the Same Configuration Files" section on page
"Monitoring and Maintaining HSA Operation" section on page
Purpose
(Optional) Specifies the system image that the router loads at
startup and stores it in the BOOT variable in the current running
configuration.
For a complete syntax description and usage guidelines,
Note
refer to the Cisco IOS Configuration Fundamentals
Command Reference publication.
(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
(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.
Exits global configuration mode and returns you to privileged
EXEC configuration mode.
Saves the settings to the startup configuration. This also puts the
information under that RSP's ROM monitor control.
Verifies the environment variable settings.
Purpose
Specifies which image the standby runs.
40.
28.
OL-4920-02
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