Fabric resiliency: Fabric null route detection and recovery

Devices can detect and recover from fabric faults that are not caused by hardware failure but might be a result of a fabric null route condition. To recover from a fabric null route condition, the routing matrix uses the following options: 

• SIB reboot 
• FPC reboot 
• Destination reprogramming 
• Related faults recovery 

You can disable the automatic recovery feature by using the auto-recovery-disable statement at the [edit chassis fabric degraded] hierarchy level. You can configure the FPCs to go offline when a traffic null route condition is detected in the routing matrix by using the fpc-offline-on-null-route filtering statement at the [edit chassis fabric degraded] hierarchy level. You can configure the FPCs to restart when a traffic null route condition is detected in the routing matrix by using the fpc-restart statement at the [edit chassis fabric degraded] hierarchy level.