JUNOS High Availability

Check General System Status

The purpose of this section is to collect data about the router hardware configuration and environment (temperatures and voltages).

Note

You can run these commands only on the master RE; if you are connected to the backup RE, the commands will fail. In this case, either move your console connection to the master RE or use this command:

lab@r1-re0> request routing-engine login other-routing-engine

Check for Any Active Alarms

Run the show chassis alarm command on the master RE to display any active alarms. If any alarm is reported, contact JTAC (remember to include all output you collected).

Note

If the Ethernet management interface (fxp0) is not connected, a red alarm will be triggered. This is the correct behavior; to avoid the alarm, make sure the management interface is connected.

Save the System Hardware Configuration for Future Reference

Connect to the master RE and run the show chassis hardware command. This command allows you to get a snapshot of the actual hardware configuration together with the serial numbers of each component.

Here is sample output from an M40e router; the actual output might vary according to the platform and installed hardware:

lab@r1-re0> show chassis hardware Hardware inventory: Item Version Part number Serial number Description Chassis 25979 M40e Midplane REV 01 710-005071 AW9739 FPM CMB REV 03 710-001642 AN5627 FPM Display REV 03 710-001647 BD0951 CIP REV 05 710-002649 BA5041 PEM 0 Rev 01 740-003787 MC25400 Power Entry Module PEM ...