When the Routing Engine detects an alarm condition, it lights the red or yellow alarm LED on the craft interface as appropriate. To view a more detailed description of the alarm cause, issue the show chassis alarms CLI command:
user@host> show chassis alarms
There are two classes of alarm messages:
In both tables, the text in the column labeled “CLI Message” appears in the output from the show chassis alarms command.
Table 17: Chassis Alarm Messages
Table 18: SONET/SDH Interface Alarm Messages