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

Keegan Holley keegan.holley at sungard.com
Sun Apr 15 20:09:55 EDT 2012


I have a bunch of these in the lab and haven't had a problem.  Have you
tried enabling auto-negotiation?  Have you tried changing port?  Also, what
is the other side set for?  What does it say?  The problem sounds kind of
vague without an interface config or the exact device or nic you are trying
to connect.

2012/4/15 graham <graham at g-rock.net>

> Hi there,
>
> Anyone out there still using this older switch?  I just pulled one out of
> the closet - and having a heck of a time getting the switchports to
> actually
> link up at 1Gb.  I have a couple of 1Gb capable devices (servers, other
> routers, etc) that do 1Gb all day long on other Cisco switches - but not on
> the 3550-12T.  Remember, this is the switch that has (10) 10/100/1000
> BaseTX
> and (2) 1000 Gbic slots ..
>
> I have tried to put the copper interface into "speed auto 1000" as well as
> "speed 1000" (with the other side matching) and always results in a
> not-connect. The command 'speed nonegotiate' doesn't exist.
>
> Seems that 100-Full is the best I can get it.
>
> It's running the last IOS for it, c3550-ipservicesk9-mz.122-44.SE6.bin.
>
> Any guidance would be appreciated.  Thanks!
>
> -graham
>
>
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