Monitoring the HCM

You monitor the High-Availability Chassis Manager (HCM) on the M10i router to ensure that it works with its companion Routing Engine to provide control and monitoring functions for router components. You also monitor the HCM to ensure that it displays alarm status and takes Physical Interface Cards (PICs) online and offline. (See Table 100.)

Table 100: Checklist for Monitoring the HCM

Monitor HCM Tasks	Command or Action
Understanding the HCM
Monitoring the HCM Status
Check HCM LEDs	Look at the LEDs on the HCM component faceplate.
Check HCM Environmental Status	show chassis environment hcm
Check the Companion Routing Engine Status	show chassis routing-engine
Displaying HCM Alarms	show chassis alarms
Performing A Swap Test
Remove an HCM	Remove the HCM and replace it with one that you know works. Follow the procedure in the M10i Internet Router Hardware Guide to remove an HCM. If two HCMs are installed, determine which HCM is master using the show chassis environment hcm CLI command. Switch HCM mastership using the request chassis routing-engine master switch CLI command. Shut down the router software using the request system halt CLI command. Remove the Routing Engine. Remove the failed HCM.
Install an HCM	Install the HCM that works. Install the Routing Engine. Ensure that the HCM is functioning properly using the show chassis environment hcm CLI command. If the HCM still doesn't work, return it. See Return the Failed Component or follow the procedure described in the M10i Internet Router Hardware Guide.
Getting HCM Hardware Information
Display the HCM Hardware Information	show chassis hardware
Locate the HCM Serial Number ID Label	Look near the front of the component on the right side.
Returning the HCM	See Return the Failed Component, or follow the procedure in the M10i Internet Router Hardware Guide.