Table 155: Checklist For Monitoring Redundant Pcgs; Redundant Pcgs Overview - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
Related
Documentation

Redundant PCGs Overview

704
Table 155: Checklist for Monitoring Redundant PCGs (continued)
Monitor Redundant PCG Tasks
1. Display the PCG Master from the Craft
Interface on page 708
2. Check the PCG LEDs for Mastership on the
Faceplate on page 709
3. Display the Packet Forwarding Engine
Current Clock Source on page 709
"Display PCG Failure Alarms" on page 709
"Replace a PCG" on page 710
"Bring the Replaced PCG Online" on
page 711
"Bring the Replaced PCG Online" on page 711
1. Verify That the Replaced PCG Is Online on
page 711
2. Display PCG Messages in the System Log
File on page 712
3. Display PCG Error Messages in the Chassis
Daemon Log File on page 712
Redundant PCGs Overview on page 704
You monitor redundant PCGs to ensure that they generate a clock signal to synchronize
the modules and application-specific integrated circuits (ASICs) that make up the Packet
Forwarding Engine.
Redundant PCGs are two PCGs installed in a router. The PCG supplies a 125-MHz system
clock to synchronize the modules and ASICs that make up the Packet Forwarding Engine.
The M40e and M160 routers have two PCGs located at the rear of the chassis in the slots
labeled and , to the right of the Routing Engine slots (see
PCG0 PCG1
page 705).
Command or Action
show chassis craft-interface
Remove the rear component cover and look
on the PCG faceplate at the rear of the M40e
or M160 router chassis.
show chassis clocks
show chassis alarms
See "Replace a Failed Component" on
page 162, or follow the procedure in the M40e
or M160 router hardware guide.
request chassis pcg slot slot-number online
show chassis environment pcg
show log messages | match PCG
show log chassisd | match PCG
Figure 338 on
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