Yes indeed there are cases where setting it manually will not work, and
auto-neg needs to be in place.  I've run into this with ixtreme servers
connected to 2900 switches.  Tis yet another reason to test before
implementation.

        Bri


On Tue, 10 Dec 2002, Priscilla Oppenheimer wrote:

> [EMAIL PROTECTED] wrote:
> >
> > From my experience in networking I made my mind that manual
> > configuration
> > of speed and mode is the better choice.
> >
> > Cisco recommends fixed configuration too.
> >
> > For my surprise,   802.3 specification states:
> >
> > "It is strongly recommended that Auto-Negotiation be used ..."
> > "Manual configuration is not recommended"
> >
> > That sounds weird for me.  Any thoughts?
>
> Of course, they say that. They invented it. :-) They couldn't know that it
> wouldn't really work in the real world. Unlike IETF, I don't think IEEE has
> strict rules about there needing to be implementations that interoperate
> before a standard is declared finished.
>
> Actually, some of the problems come about because some vendors started
> implementing auto-negotation before the standard came out and did things a
> little differently. That always happens.
>
> There are some cases, by the way, where manual configuration won't work
> either! I've run into that.
>
> In general, the problems are starting to go away, however. The vendors are
> mostly doing things in an ineroperable manner now and auto-negotiation may
> be safe to use again, at least from my limited experience.
> _______________________________
>
> Priscilla Oppenheimer
> www.troubleshootingnetworks.com
> www.priscilla.com




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