Performing A Swap Test ! 439
Chapter 33: Monitoring the HCM
Steps To Take To perform a swap test and verify HCM failure, follow these steps:
1. Remove an HCM on page 439
2. Install an HCM on page 441
Step 1: Remove an HCM
The HCM is hot-pluggable. You can perform a swap test on an HCM to try to
pinpoint the problem.
Action To remove an HCM, follow these steps:
1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
2. If a Routing Engine is installed in the same row as the HCM you are removing,
remove the Routing Engine first. If two Routing Engines are installed, use one of
the following two methods to determine which HCM is functioning as master:
! Note which of the blue MASTER LEDs is lit on the Routing Engine
faceplates.
! Use the following CLI command:
user@host> show chassis environment hcm
HCM 0 status:
State Online Master
FPGA Revision 27
HCM 1 status:
State Online Standby
FPGA Revision 27
The master HCM is designated Master in the State field.
3. If you are removing the master Routing Engine and a second Routing
Engine is installed, issue the following CLI command to switch mastership
to the standby host module:
user@host> request chassis routing-engine master switch
warning: Traffic will be interrupted while the PFE is re-initialized
Toggle mastership between routing engines ? [yes,no] (no) yes
Resolving mastership...
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