Determining PCG Mastership ! 373
Chapter 28: Monitoring the PCG
Step 3: Look at the PCG LEDs on the Faceplate
Action To view the PCG LEDs, remove the rear component cover and look on the PCG
faceplate at the rear of the M40e or M160 router chassis (see Figure 153 on
page 370 and Figure 154 on page 371). Table 90 describes the functions of these
LEDs.
Table 90: PCG LEDs
Determining PCG Mastership
The PCGs function as redundant components. For information about monitoring
redundant PCGs, see “Monitoring Redundant PCGs” on page 595.
Steps To Take To determine which PCG is operating as the master, follow these steps:
1. Display the PCG Master in the Craft Interface Output on page 373
2. Look at the PCG LEDs on the Faceplate on page 374
3. Display the Packet Forwarding Engine Current Clock Source on page 374
Step 1: Display the PCG Master in the Craft Interface Output
Action To determine the PCG master from the craft interface status information, use the
following CLI command:
user@host> show chassis craft-interface
Sample Output
user@host>
show chassis craft-interface
[...Output truncated...]
PCG LEDs:
PCG 0 1
--------------
Amber . .
Green * *
Blue * .
[...Output truncated...]
What It Means The command output shows that PCG 0 is the master because the blue MASTER LED
is on.
Color Label State Description
Blue MASTER On steadily PCG is master.
Green
OK On steadily PCG is operating normally.
Blinking PCG is starting up.
Amber
FAIL On steadily PCG has failed.
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