Technical Documentation

Verifying Power Configuration and Use

Purpose

Verify on an EX8200 switch:

  • What the power redundancy and line card priority settings are
  • Whether the N+1 or N+N power requirements are being met
  • Whether the switch has sufficient power for a new line card or an N+N configuration

Action

Enter the following command:

user@switch> show chassis power-budget-statistics
    PSU  1     (EX8200-AC2K)                 :    1200 W
    PSU  2     (EX8200-AC2K)                 :    1200 W
    PSU  3     (EX8200-AC2K)                 :    1200 W
    PSU  4     (EX8200-AC2K)                 :    1200 W
    Total Power supplied by all Online PSUs  :    4800 W
    Power Redundancy Configuration           :     N+N
    Power Reserved for the Chassis           :    1200 W
    FPC  5     (EX8200-48F )                 :     330 W    Priority: 7
    FPC  6     (EX8200-8XS )                 :     450 W    Priority: 0
    Actual Power Used                        :    1980 W
    Power Available (Redundant case)         :     420 W
    Total Power Available                    :    2820 W

Meaning

The switch is configured for N+N redundancy. As shown by the Power Available (Redundant case) field, the switch has sufficient power to meet the N+N power requirements and has an additional 420 W available. The switch has insufficient power for an additional 8-port SFP+ line card while maintaining N+N redundancy, because the line card requires 450 W. However, it does have enough power for an additional 48-port SFP line card, which requires only 330 W. The 8-port SFP+ line card in slot 6 has a higher power priority than the 48-port SFP line card line card in slot 5.

Note: The amount of power shown in the Actual Power Used field reflects the total power allocated in the power budget for the installed components rather than the actual power being used by the components. Because the power budget allocation is based on maximum power use, actual power consumption is likely to be much less.


Published: 2010-06-22

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