Thanks! I will try auto-negotiate tonight. If it is still
at half-duplex, at least both sides of the connection
will probably at least be in agreement.
Tom

Jeff Kell wrote:
> Tom Hula wrote:
>> The switch still thinks the
>> connection is Half, even with recycling the power and changing
>> ports on the switch. I'm not sure what the problem is...or if there
>> is a problem, but again, thank you all. 
> Short answer...
>
> * turn off negotiation at the switch and hard code it at 100/full, *or*
> * turn ON negotiation at the 3000
>
> Longer answer...
>
> Older hardware and negotiation schemes were somewhat optimistic.  
> Autonegotiation is supposed to work according to a standard 
> (eventually 802.3u clause 28, later extended in 802.3ab) where there 
> is an actual exchange of data between both ends of the connection.  If 
> both ends don't fully support autonegotiation, some implementations 
> would be "optimistic" and try to detect the link characteristics on 
> their own to try to provide full-duplex if it appears to be allowed.
> Most current schemes are instead pessimistic and will "fall back" to 
> half-duplex when in doubt (which is according to standard).  So a 
> "standard" device set for autonegotiation will only speak full-duplex 
> if both ends establish mutually agreeable autonegotiation.
>
> Jeff
>

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