cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

527
Views
0
Helpful
5
Replies
xiaowei-lin
Beginner

switch hang when outage of one power

Hello experts,

would you please analyze the log and give some suggestion?

Thanks

Best Regards

Richard

5 REPLIES 5
kenk
Cisco Employee

Hello Richard,

Can you describe the problem in greater detail?  I do see (in the logging log) that power supply 1 is

going down...have you figured out why that's happening?  (e.g. do you have a power source issue?)

Regards,

Ken

Hello kenk,

we have two switch in site, when shutdown one way power of UPS, all ports of the switch was hang, another switch is ok.

then I done powercycle for the switch, the issue was gone.

I don't know why to cause this? the same issue was appear before, then i done a upgrade IOS for the switch.

please view "show system reset-reason".

Thanks for your support.

Hi

How is power supplies configured on your switch? redundant mode or combined mode?

Cheers

redundancy mode,

Power Usage Summary:
--------------------
Power Supply redundancy mode:                   redundant

Total Power Capacity                            800.10   W

Power reserved for Supervisor(s)[-]             418.32   W
Power reserved for Fan Module(s)[-]             47.88    W
Power currently used by Modules[-]              184.80   W

                                                -------
Total Power Available                           149.10   W
                                                -------

Thanks for sharing the power mode (being redundant, there *should* be no impact to the switch when 1 power

supply fails or loses power).

I did a quick search for any known matching bugs, but didn't find any.

I'd advise opening a TAC Service Request for furhter analysis and to determin the root cause of the hang.

Regards,

Ken