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Upgrading Systems That Are Operating with Two SRP Modules

Use this procedure if the system contains two SRP modules and is already operating with an earlier software release. Each SRP module will keep the system operational while you upgrade the software on the other, so that you can avoid interrupting service.



Caution: You must upgrade the software on the redundant SRP module when you upgrade the software on the primary SRP module. This action prevents the redundant SRP module from overwriting the new software on the primary SRP module if the primary SRP module fails and the redundant SRP module assumes control.

To upgrade the software on a system that is operational and contains two SRP modules:

  1. Turn off autosynchronization.
host1(config)#disable-autosync
  1. Copy the new release of the software to NVS of the primary SRP module.
host1#copy /incoming/releases/x-y-z.rel x-y-z.rel
host1#copy hostname:/cdrom/x-y-z/x-y-z.rel x-y-z.rel
host1#copy boston:/outgoing/releases/x-y-z.rel x-y-z.rel
  1. Save the current configuration.
host1#copy running-configuration system2.cnf
  1. Specify that the ERX system should use the new software release when it reboots.
host1(config)#boot system x-y-z.rel
  1. Synchronize the NVS file system of the redundant module to that of the primary module.
host1#synchronize

The redundant SRP module will automatically reboot, because the software release that it is configured to run differs from the software release it is running.

  1. Wait for the redundant SRP module to boot, initialize, and reach the standby state.

When the module is in standby state, the REDUNDANT LED is on and the ONLINE LED is off. If you issue the show version command, the state field for the module should be standby.

After any type of reboot, the primary and redundant SRP module NVS file systems will be unsynchronized again.

  1. Synchronize the NVS file system of the redundant module to that of the primary module.
host1#synchronize
  1. Switch from the primary SRP module to the redundant SRP module.
host1#srp switch

The redundant SRP module assumes the primary role. The former primary SRP module reboots and assumes the redundant role.


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