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## Related Documentation

- Deactivating High Availability
- Stateful Line Module Switchover Modes
- Application Support for Stateful Line Module Switchover
- mode
- line-card switch
- show redundancy history
- show redundancy line-card

# Guidelines for Deactivating High Availability

You can disable high availability for line modules by launching Redundancy Configuration mode and issuing the no mode high-availability slot command. In the redundancy mode, the spare line module to take control of the IOA associated with the failed line module in the redundancy group. During switchover, the line, circuit, and IP interfaces on one or more IOAs appear to go down temporarily. This is the default behavior mode for E120 and E320 routers that contain redundant line modules.

Because this mode requires the router to reload the interface configuration and the routing table from the SRP module, instead of transaction-based mirroring, when the active line module switches to the standby line module, a disruption occurs in handling user sessions and traffic forwarding.

## Related Documentation

- Deactivating High Availability
- Stateful Line Module Switchover Modes
- Application Support for Stateful Line Module Switchover
- mode
- line-card switch
- show redundancy history
- show redundancy line-card

#### Published: 2011-03-24

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