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 |
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Step 1 | Router(config)# boot system | (Optional) Specifies the system image that the router loads at |
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| startup and stores it in the BOOT variable in the current running |
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| configuration. |
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| Note For a complete syntax description and usage guidelines, |
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| refer to the Cisco IOS Configuration Fundamentals |
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| Command Reference publication. |
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Step 2 | Router(config)# boot bootldr | (Optional) Specifies the Flash file system and file name that ROM |
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| uses at startup and stores it in the BOOTLDR variable in the |
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| current running configuration |
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Step 3 | Router(config)# boot config | (Optional) Specifies the location of the configuration file that the |
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| router uses at startup and stores it in the CONFIG_FILE |
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| environment variable in the current running configuration. |
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Step 4 | Router(config)# end | Exits global configuration mode and returns you to privileged |
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| EXEC configuration mode. |
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Step 5 | Router# copy | Saves the settings to the startup configuration. This also puts the |
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| information under that RSP’s ROM monitor control. |
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Step 6 | Router# show bootvar | Verifies the environment variable settings. |
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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 |
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Router(config)# | Specifies which image the standby runs. |
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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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