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Maintaining the Power Supply Modules on the MX2000 Line of Routers

 

Purpose

For optimum router performance, verify the condition of the power supply modules (PSMs).

Action

On a regular basis:

  • Check the status of the PSMs by issuing the show chassis environment psm command.

    The following output displays environmental information about the PSMs in an MX2020:

    user@host> show chassis environment psm

    The following output displays environmental information about the PSMs in an MX2010:

    user@host> show chassis environment psm
  • Make sure that the power and grounding cables are arranged so that they do not obstruct access to other router components.

  • Routinely check the status LEDs on the AC or DC PSM faceplates and the craft interface to determine whether the PSMs are functioning normally.

  • Check the red and yellow alarm LEDs on the craft interface. PSM failure or removal triggers an alarm that causes one or both of the LEDs to light. You can display the associated error messages by issuing the following command:

    user@host> show chassis alarms
  • Periodically inspect the site to ensure that the grounding and power cables connected to the router are securely in place and that no moisture accumulates near the router.