Maintaining the T1600 SIBs

Purpose

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

Action

• Observe the status of the SIBs by checking the LEDs on the SIB faceplate. During normal operations:

  • The green OK LED on the SIB faceplate is lit.
  • The yellow FAIL LED on the SIB faceplate is not lit.
• 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 System Basics and Services Command Reference .