Configuring Failover to Backup Media if a Junos OS Process Fails
For routers with redundant Routing Engines, you can configure the router to switch to backup media that contains a version of the system if a software process fails repeatedly. You can configure the router to fail over either to backup media or to the other Routing Engine. To configure automatic switchover to backup media if a software process fails, include the failover statement at the [edit system processes process-name] hierarchy level:
[edit system processes]process-name failover (alternate-media
| other-routing-engine);
process-name is one of the valid process names. If this statement is configured for a process, and that process fails four times within 30 seconds, the router reboots from either the alternative media or the other Routing Engine.
