[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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