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 MX2010:

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  user@host> show chassis environment psm
  PSM 2 status:
    State                      Online
    Temperature                OK                                      
    DC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         50.00       18.90     945.00 
                               INP1         0.00        0.00      0.00   
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 51.75      16.50      853.88     40.66
    Hours Used                 6140
  PSM 3 status:
    State                      Online
    Temperature                OK                                      
    DC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         50.40       18.90     952.56 
                               INP1         0.00        0.00      0.00   
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 51.75      16.50      853.88     40.66
    Hours Used                 6140
  40
  ...
  

  Here is an example of the AC PSM input status for an MX2010:

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  user@host> show chassis environment psm
  
  PSM 0 status:
    State                      Online
    Temperature                OK
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         223.75      1.40      313.25
                               INP1         0.00        0.00      0.00
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.00      4.25       221.00     10.52
    Hours Used                 6862
  PSM 1 status:
    State                      Online
    Temperature                OK
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         225.00      1.40      315.00
                               INP1         2.50        0.00      0.00
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.00      4.25       221.00     10.52
    Hours Used                 6862
  PSM 2 status:
    State                      Online
    Temperature                OK
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         225.00      1.30      292.50
                               INP1         3.75        0.00      0.00
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.00      4.25       221.00     10.52
    Hours Used                 6862
  P...
  

  Here is an example of the universal PSM (HVAC/HVDC) input status for an MX2010:

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  user@host> show chassis environment psm
  PSM 0 status:
    State                      Online
    Temperature                             OK                                      
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         209.10      0.10      20.91  
                               INP1         209.10      0.10      20.91  
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.50      5.10       267.75     7.87 
    Hours Used                 1832
  PSM 1 status:
    State                      Online
    Temperature                             OK                                      
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         209.10      0.20      41.82  
                               INP1         209.10      0.90      188.19 
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.50      6.46       339.15     9.98 
    Hours Used                 2571
  PSM 2 status:
    State                      Online
    Temperature                             OK                                      
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         209.10      3.70      773.67 
                               INP1         210.80      2.70      569.16 
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.50      17.34      910.35     26.78
    Hours Used                 3404
  PSM 3 status:
    State                      Online
    Temperature                             OK                                      
    AC Input                   Feed       Voltage(V)  Current(A) Power(W)
                               INP0         209.10      3.60      752.76 
                               INP1         209.10      0.60      125.46 
    DC Output                  Voltage(V) Current(A)  Power(W)   Load(%)
                                 52.50      11.90      624.75     18.37
    Hours Used                 2571
  ...
  

• 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:

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  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.