for your information 

Catalyst 2900 10/100 ports automatically adjust to the Ethernet speed
and duplex mode of the attached segment. First, 802.3u is implemented to
negotiate the link's
speed (10 or 100) and duplex mode (half or full). If the attached device
will not autonegotiate, that is, is not 802.3u compliant, the Catalyst
2900 will autosense and
configure to the speed and duplex mode of the other device.

Yves Routhier

"Ledwidge, Feargal" wrote:
> 
> As far as I'm aware - auto-sense is not a "standard", there sren't defined
> specifcations for each vendor to follow.
> 
> Feargal
> 
>  Feargal Ledwidge, CCDA CCNP
>  Wyle Electronics
>  Network Projects Manager
>  Direct: 949.453.3016
>  Fax: 949.788.4794
> 
> 
> -----Original Message-----
> From: ROUTHIER, YVES [mailto:[EMAIL PROTECTED]]
> Sent: Monday, September 11, 2000 9:45 AM
> Cc: [EMAIL PROTECTED]
> Subject: Re: auto-negotiate not reliable
> 
> hello
> 
> the reason why is ,
> 
> when they come out with the standar of auto-sense they got some hole in
> the standar and some equipment manufacture complete those hole as they
> thing is good for them
> 
> hope I'm clear
> 
> Yves Routhier
> 
> Patrick Bass wrote:
> >
> > It can't determine the condition of the cable.  What else?...anyone help?
> >
> > "Doug Laing" <[EMAIL PROTECTED]> wrote in message
> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > Can someone explain to me why auto-negotiate on a Catalyst 5500 and a
> > > NIC is not always reliable.
> > >
> > > **NOTE: New CCNA/CCDA List has been formed. For more information go to
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