Monitoring Redundant PCGs

You monitor redundant Packet Forwarding Engine clock generators (PCGs) to ensure that a clocking signal is generated to synchronize the internal M40e and M160 router Packet Forwarding Engine components. (See Table 125.)

Table 125: Checklist for Monitoring Redundant PCGs

Monitor Redundant PCG Tasks	Command or Action
Understanding Redundant PCGs
Displaying Redundant PCG Hardware Information	show chassis hardware
Monitoring Redundant PCG Status
Monitor the Redundant PCG Environmental Status	show chassis environment show chassis environment pcg
Display the Redundant PCG Status from the Craft Interface	show chassis craft-interface
Check the PCG LED Status on the Faceplate	Remove the rear component cover and look on the PCG faceplate at the back of the M40e or M160 router chassis.
Determining Redundant PCG Mastership
Display the PCG Master from the Craft Interface	show chassis craft-interface
Check the PCG LEDs on the Faceplate	Remove the rear component cover and look on the PCG faceplate at the rear of the M40e or M160 router chassis.
Display the Packet Forwarding Engine Current Clock Source	show chassis clocks
Displaying PCG Failure Alarms	show chassis alarms
Replacing a PCG	See Return the Failed Component, or follow the procedure in the M40e or M160 router hardware guide.
Bringing the Replaced PCG Online	request chassis pcg slot slot-number online
Verifying That the Replaced PCG Is Online
Display the Replaced PCG Environmental Status	show chassis environment pcg
Display PCG Messages in the System Log File	show log messages | match PCG
Display PCG Error Messages in the Chassis Daemon Log File	show log chassisd | match PCG

See Also

• Monitoring the PCG