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Automatic Switchover
Provided you have not issued the redundancy
lockout command for the primary line module, the router
switches over to the spare line module automatically if it detects
any of the following failures on the primary line module:
- Power-on self-test (POST) failure
- Software-detected unrecoverable error
- Software watchdog timer expiration
- Primary line module failure to respond to keepalive polling
from the SRP module
- Removal, disabling, or reloading of the primary line module
- Missing or disabled primary line modules when the router
reboots
- Resetting the primary line module using the concealed
push button
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