Traffic loss power supply related?

[Ton V Engelen]

Hi

we ran into a very weird issue

Setup: two 6513-E core switches running VSS, both have two power supplies

We ve had some power issues regarding one power supply. So had it replaced but still seeing some issues

At a certain point all kind of traffic got lost yet we could not find anything causing this

Untill we shut down one of the two power supplies on one 66513-E, everything went back to normal. 

Huh? Well, yes. 

As i could not really believe it, i turned it back on a week later. 

Result, traffic gets lost again

Turn off power, everything went to normal. 

Anyone has a clue? 

The power supply was replaced once already, could this be a chassis issue? 

FW: s2t54-advipservicesk9_npe-mz.SPA.151-2.SY5.bin 

For whats its worth, there s nothing in the logging, nothing to see reagding power supplies etc 

Thanks in advance

[Reza Sharifi · Accepted solution]

Hi,

I would suspect this a software bug that is causing this. You may want to open a ticket with TAC and see if they recommend a different version of IOS. Very strange.

HTH

[Ton V Engelen]

Hi

yeah its like water burning...

ok, i will do that, thank you! 

[Reza Sharifi]

Hi,

sure. Let us know what you find out.  I can understand if one power supply could not handle the chassis load but in your case, the problem appears when you turn on 2 power supplies.

Good Luck!