I'd imagine most of these commands aren't mutually exclusive between hardware models, but I'm going to build a dedicated section for the device types I work with
Show all REs status
show chassis routing-engineLogin to non-Master members (for troubleshooting only)
request session member {0-9}Database Replication Summary - use to verify cluster member sync state. Useful for troubleshooting
show database-replication summaryVerify NSB/NSR replication
show task replication
show nonstop-routingCheck if Master RE switch is ready for switchover (run on the Master)
request chassis routing-engine master switch checkCheck if the Backup RE is ready for switchover (run on the backup (request session member [0..9]))
show system switchover A. Command request chassis routing-engine master switch check returns:
error: Failed to get kernel-replication error information from Standby Routing Engine.
Standby Routing Engine is not ready for graceful switchover.
Error: Command aborted. The other RE is not present.The only way I've found to rectify this is to reboot the affected VC member (not a huge issue if all client connections are LAGs)