Step 4: Display Control Board Error Messages in the Chassis Daemon Log File

Action

To display Control Board error messages in the chassisd log file, use the following CLI command:

user@host> show log chassisd | match cb

Sample Output

user@host> show log chassisd | match cb

May 18 16:04:06 CHASSISD_FRU_OFFLINE_NOTICE: Taking CB 1 offline: Offlined

May 18 16:04:06 GBUS cmd to CB#1 [0x9], Green LED Off [0x1a]

May 18 16:04:06 CB#1 - Green LED Off

May 18 16:04:06 hwdb: entry for cbd 296 at slot 1 deleted

What It Means

The chassisd database provides the date, time, and a component status message. The chassisd database is dynamic. It is initialized at router startup and is updated when components are added or removed. You can search for multiple items in the chassisd log file by using the | match cb command to see error messages that are generated when a Control Board fails or is offline. Use this information to diagnose a Control Board problem and to let JTAC know what error messages were generated and the router events that occurred before and after the problem. For more information about system log messages, see the JUNOS System Log Messages Reference.