# Managing Line Module Redundancy

When the router is running and a redundancy group is installed, to manage stateless switchover redundancy, you must perform the following tasks:

- Force switchover manually.
  host1#redundancy force-switchover 5
- Force reversion manually.
  host1#redundancy revert 4 23:00:00 5 September 200X

| Note: Line module redundancy is also effective when the primary line module encounters a hardware fault or a ROM problem. Such a fault is denoted by the hardware error status or not responding status in the State field in the output of the show version command. When the status of the primary line module is hardware error or not responding, the standby line module becomes the new primary module.

#### Related Documentation

- Line Module Redundancy Overview
- Line Module Redundancy Requirements
- Configuring Line Module Redundancy
- Stateful Line Module Switchover Overview
- Stateful Line Module Switchover Modes
- System Operations When Stateful Line Module Switchover Is Enabled
- redundancy force-switchover
- redundancy revert