Maintaining the M320 SIBs

Purpose

For optimum router performance, verify the condition of the SIBs.

Action

On a regular basis:

• Observe the status of the SIBs by checking the LEDs on the SIB faceplate or craft interface. For more information on the SIB LEDs, see M320 SIB LEDs and M320 Craft Interface SIB LEDs.
• To check the status of the SIBs using the CLI, issue the show chassis environment sib command. The output is similar to the following:
  user@host> show chassis environment sib

  SIB 0 status:
    State                           Online
    Temperature                  37 degrees C / 98 degrees F
    Power:
      GROUND                      0 mV
      1.8 V                    1797 mV
      2.5 V                    2493 mV
      3.3 V                    3315 mV
      1.8 V bias               1789 mV
      3.3 V bias               3284 mV
      5.0 V bias               5023 mV
      8.0 V bias               7452 mV
  SIB 1 status:
    State                           Online
    Temperature                  38 degrees C / 100 degrees F
    Power:
      GROUND                      0 mV
      1.8 V                    1798 mV
      2.5 V                    2495 mV
      3.3 V                    3321 mV
      1.8 V bias               1797 mV
      3.3 V bias               3289 mV
      5.0 V bias               4971 mV
      8.0 V bias               7462 mV
  SIB 2 status:
    State                           Online
    Temperature                  38 degrees C / 100 degrees F
    Power:
      GROUND                      0 mV
      1.8 V                    1810 mV
      2.5 V                    2492 mV
      3.3 V                    3327 mV
      1.8 V bias               1794 mV
      3.3 V bias               3306 mV
      5.0 V bias               4996 mV
      8.0 V bias               7499 mV
  SIB 3 status:
    State                           Online
    Temperature                  41 degrees C / 105 degrees F
    Power:
      GROUND                      0 mV
      1.8 V                    1796 mV
      2.5 V                    2483 mV
      3.3 V                    3328 mV
      1.8 V bias               1802 mV
      3.3 V bias               3286 mV
      5.0 V bias               4967 mV
      8.0 V bias               7570 mV
  

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