I need help configuring Stack-power on a 3750X stack

[cespangler]

I have 3 switches in my 3750 X stack. I am getting the following error in the logs:  %PLATFORM_STACKPOWER-4-PRIO_CONFLICT: Switch 1's power stack has conflicting power priorities.  Not sure what I should do next. Below is my Stack-power configuration:

Power stack name: Powerstack-1
    Stack mode: Power sharing
    Stack topology: Ring
    Switch 1:
        Power budget: 735
        Low port priority value: 20
        High port priority value: 10
        Switch priority value: 2
        Port 1 status: Connected
        Port 2 status: Connected
        Neighbor on port 1: c464.1308.7900
        Neighbor on port 2: e8b7.4827.e680

    Switch 3:
        Power budget: 729
        Low port priority value: 22
        High port priority value: 13
        Switch priority value: 4
        Port 1 status: Connected
        Port 2 status: Connected
        Neighbor on port 1: 2894.0fd9.9f00
        Neighbor on port 2: 2894.0fd8.e200

    Switch 2:
        Power budget: 690
        Low port priority value: 21
        High port priority value: 12
        Switch priority value: 3
        Port 1 status: Connected
        Port 2 status: Connected
        Neighbor on port 1: 2894.0fd8.e200
        Neighbor on port 2: c464.1308.7900

Each switch has its own 715W power supply in it and all check out OK.

[Ivan Shirshin]

Hi,

What is your IOS release version on this switches?

For the PRIO_CONFLICT print, it indicates there are two sets of devices within the same power stack that have the same priority level (1 - 27).  You current configuration looks fine.

If you saw this once, it's likely it just occurred while you were configuring their priorities. If it is continually happening, then it can be a variation of the bug CSCtg20513 and you can try either IOS upgrade or a workaround by toggling the stack ports (shut/no shut) on the unit that is incorrectly reporting this error.

     config t

          stack-power switch 1

          standalone

          no standalone

Kind Regards,
Ivan Shirshin

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[cespangler]

We are running 15.0(1)SE2.

I tried toggling the stackports on switch 1. Waited a few minutes. Now I am getting the same log message for Switch 2. Do I need to toggle stack-ports on all the switches?

My biggest issue is that I cannot get POE to all the ports on switch 3.

Thanks,

Cory

[Ivan Shirshin]

Hi Cory,

The bug I mentioned should be fixed since 12.2(58)SE. Try to bounce the other switch steck=-power in the same way and see if the issue is gone. If not and priorities are still the same as in the output above, it would be a good idea to investigate the root case by opening a case with Cisco TAC.

Kind Regards,
Ivan