Example: Forcing the Router to Switch from Primary Line Module to Spare Line Module

In the following example, the user forces the router to switch from the primary line module to the spare line module by issuing the redundancy force-switchover command. In the example, you first issue the show redundancy command to display redundancy information specific to line modules. You can then issue the redundancy force-switchover command to force the router to switch from the primary line module to the spare line module. To view the status of the line modules after the switchover, you can again issue the show redundancy command.

  1. Display the redundancy information.
    host1#show redundancy
     
    SRP
    ---
     
    high-availability state:  disabled
    current redundancy mode:  file-system-synchronization
    last activation type:     cold-start
     
    Criteria Preventing High Availability from being Active
    -------------------------------------------------------
                criterion                met
    ----------------------------------   ---
    High Availability mode configured?   No
    Mirroring Subsystem present?         No
     
    Line Card
    ---------
     
    automatic reverting is off
     
                                  backed
                                    up     sparing
           hardware    lockout      by       for     revert
    slot     role      config      slot     slot       at
    ----   --------   ---------   ------   -------   ------
     0      spare        ---       ---       ---      ---
     2     primary    protected    ---       ---      ---
     12      ---         ---       ---       ---      ---
     
            midplane   midplane
    slots     type       rev
    -----   --------   --------
    0 - 5      6          0
     
    
    
  2. Force the router to switch from the primary line module to the spare line module.
    host1#redundancy force-switchover 2
    
  3. Verify the redundancy status of the line module.
    host1#show redundancy line-card
    
    automatic reverting is off
     
                                  backed
                                    up     sparing
           hardware    lockout      by       for     revert
    slot     role      config      slot     slot       at
    ----   --------   ---------   ------   -------   ------
     0      spare        ---       ---        2       ---
     2     primary    protected     0        ---      ---
     12      ---         ---       ---       ---      ---
     
            midplane   midplane
    slots     type       rev
    -----   --------   --------
    0 - 5      6          0

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