Action To check the SSB mastership from the LEDs, look on the faceplate at the front of the
router (see “Check the Redundant SSB LEDs” on page 721).
The SSB has two groups of LEDs: online/offline LEDs and status LEDs. The online/offline
LEDs indicate whether the SSB is online or offline. The status LEDs indicate what type
of task the SSB is performing.
Related
Documentation
Checklist for Monitoring Redundant SSBs on page 715•
Check for SSB Alarms
To check for SSB alarms:
1.
Display the Current SSB Alarms on page 723
2.
Display SSB Error Messages in the System Log File on page 723
3.
Display SSB Error Messages in the Chassis Daemon Log File on page 724
Display the Current SSB Alarms
Purpose To determine the details of the current SSB alarms.
Action To display the current SSB alarms, use the following command:
user@host> show chassis alarms
Sample Output
user@host> show chassis alarms
2 alarms currently active
Alarm time Class Description
2002-06-05 19:55:57 UTC Major fxp0: ethernet link down
Meaning The command output displays the alarm date, time, severity level, and description. An
SSB failure or removal generates an fxp0 link alarm. The fxp0 link is the dedicated
100-Mbps Fast Ethernet link between the SSB and the Routing Engine. This link transfers
routing table data from the Routing Engine to the forwarding table in the Internet
Processor ASIC. The link also transfers, from the SSB to the Routing Engine, routing
link-state updates and other packets destined for the router that have been received
through the router interfaces.
Display SSB Error Messages in the System Log File
Purpose To determine the details of the SSB error messages in the system log file.
Action Periodically check the system log messages on the management console for messages
sent by the SSB. During normal operation, the SSB notifies the Routing Engine of any
errors it detects.
To display the SSB error messages in the system log file, use the following CLI command:
723Copyright © 2012, Juniper Networks, Inc.
Chapter 38: Monitoring Redundant SSBs
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