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Troubleshooting the T4000 SCGs

 

Problem:

Description:

The following alarms and LEDs indicate a problem with an SCG:

  • The yellow FAIL LED on the SCG faceplate is lit.

  • The green OK LED on the SCG faceplate is not lit.

  • A red alarm indicates that the SCG has failed or has been removed.

  • A yellow alarm indicates that the SCG is not online.

In Table 1, the text in the column labeled ”LCD Message” appears in the display of the craft interface. The text in the column labeled “CLI Message” appears in the output from the show chassis alarms command.

Table 1: Chassis Alarm Messages for the SCGs

Alarm Type

LCD Message

CLI Message

Red

SCG SCG-number Failure

SCG SCG-number Failure

SCG SCG-number Removed

SCG SCG-number Removed

Yellow

SCG SCG-number Not Online

SCG SCG-number Not Online

Solution

To troubleshoot the SCGs:

  1. Check the LEDs on the faceplate of each SCG.
  2. Check the LEDs on the craft interface.
  3. Use the show chassis environment scg command.
    user@host> show chassis environment scg
  4. Use the CLI to check for alarms—Issue the show chassis alarms command to view the alarms.