[c-nsp] C3550-12T - Gig copper ports won't link at 1Gb

Keegan Holley keegan.holley at sungard.com
Mon Apr 16 06:50:11 EDT 2012


I agree with that.  If it doesn't link at all with auto auto then the link pulse frames that control speed negotiation are some how hindered.  Since you have three different devices exhibiting the same behavior on newer code I would even skip to the switch being bad. 

Sent from my iPhone

On Apr 16, 2012, at 3:55 AM, John van Oppen <jvanoppen at spectrumnet.us> wrote:

> Are you saying that the link does not come up with both ends in auto/auto?     At least on copper, that would indicate to me that you either have a bad switch or bad cabling...   Are you sure the unit you have is good?    I am plugged into a 3550-12T here at home with a few machines and auto works fine with every nic I have tried.
> 
> 
> John
> 



More information about the cisco-nsp mailing list