• Supported Platforms
• TX Matrix Routers

• Related Topics
• TX Matrix Host Subsystem Description
• TX Matrix Host Subsystem LEDs on the Craft Interface
• TX Matrix Craft Interface Overview

Maintaining the TX Matrix Host Subsystem

Purpose

For optimum TX Matrix performance, verify the condition of the host subsystem. The host subsystem comprises up to two Routing Engines and adjacent TX-CBs functioning together.

Action

On a regular basis:

• Check the host subsystem LEDs (HOST 0 and HOST 1) on the craft interface. If the red HOST 0 or HOST 1 LED is lit, look at the LED display to get more information about the cause of the problem.
• Check the LED display on the craft interface to view information about the TX Matrix router temperature and the status of the Routing Engines.
• Check the LEDs on the TX-CB faceplate to see information about the TX-CB.
• Check the status of the Routing Engines. Issue the show chassis routing-engine command. The output is similar to the following:
  
  

  user@host> show chassis routing-engine scc

  scc-re0:
  --------------------------------------------------------------------------
  Routing Engine status:
    Slot 0:
      Current state                  Master
      Election priority              Master (default)
      Temperature                 36 degrees C / 96 degrees F
      CPU temperature             38 degrees C / 100 degrees F
      DRAM                      2048 MB
      Memory utilization          11 percent
      CPU utilization:
        User                       0 percent
        Background                 0 percent
        Kernel                     2 percent
        Interrupt                  1 percent
        Idle                      97 percent
      Model                          RE-4.0
      Serial ID                      212058900121
      Start time                     2004-07-26 13:27:24 PDT
      Uptime                        2 hours, 34 minutes, 50 seconds
      Load averages:                 1 minute   5 minute  15 minute
                                         0.06       0.03       0.02
  Routing Engine status:
    Slot 1:           
      Current state                  Backup
      Election priority              Backup (default)
      Temperature                 36 degrees C / 96 degrees F
      CPU temperature             37 degrees C / 98 degrees F
      DRAM                      2048 MB
      Memory utilization          10 percent
      CPU utilization:
        User                       0 percent
        Background                 0 percent
        Kernel                     0 percent
        Interrupt                  1 percent
        Idle                      99 percent
      Model                          RE-4.0
      Serial ID                      211123900258
      Start time                     2004-07-26 14:16:02 PDT
      Uptime                        1 hour, 46 minutes
  

• Check the status of the TX-CBs. Issue the show chassis environment cb command. The output is similar to the following:
  
  

  user@host> show chassis environment cb scc

  scc-re0:
  --------------------------------------------------------------------------
  CB 0 status:
    State                           Online Master
    Temperature                  34 degrees C / 93 degrees F
    Power:
      1.8 V                    1793 mV
      2.5 V                    2479 mV
      3.3 V                    3301 mV
      4.6 V                    4752 mV
      5.0 V                    5032 mV
      12.0 V                  12214 mV
      3.3 V bias               3313 mV
      8.0 V bias               7706 mV
    BUS Revision                 40
    FPGA Revision                 1
  CB 1 status:
    State                           Online Standby
    Temperature                  33 degrees C / 91 degrees F
    Power:
      1.8 V                    1785 mV
      2.5 V                    2468 mV
      3.3 V                    3293 mV
      4.6 V                    4747 mV
      5.0 V                    5025 mV
      12.0 V                  12253 mV
      3.3 V bias               3306 mV
      8.0 V bias               7721 mV
    BUS Revision                 40
    FPGA Revision                 1

For more information about using the CLI, see the Junos OS manuals.