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

[Lee Starnes]

If I had to guess, there is something wrong with the switch. We have 12 of
those in service and all connecting to servers with Gig.  Some are AUTO and
some are hard coded to 1000 full duplex. Ours are running IOS image:
c3550-i5q3l2-mz.121-13.EA1a.bin or c3550-i5q3l2-mz.121-22.EA1a.bin

-Lee


On Mon, Apr 16, 2012 at 5:16 AM, graham <graham at g-rock.net> wrote:

> Correct - doesn't even link with auto/auto. Can only get it to link at 100.
>
> I am armed with new cabling and try to rule out the physical.
>
> Nothing in the init process that is indicating any bad phy or anything of
> the sort - I am hoping it's not a bad switch.
>
> Thanks for all the replies.
>
> -graham
>
>
> On 4/16/12 5:50 AM, "Keegan Holley" <keegan.holley at sungard.com> wrote:
>
> > 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
> >>
>
>
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