[c-nsp] Negotiation problem with Catalyst 2950 and Cisco 2821

[Gert Doering]

Hi,

On Sat, Dec 03, 2005 at 11:46:20PM +0100, Marco Huggenberger wrote:
> 2005/12/3, Gert Doering <gert at greenie.muc.de>:
> >But this is becoming the exception, not the rule, these days.
> 
> From my point of view and also my practical expiriences it is clear to
> hard code the settings of each customer interface to a fixed value
> like speed 100, duplex full.

Well, as I said - if you do that, you can be sure that one day the customer
will change something on his side, and will revert to autonegotiation.
Boom, you have a half/full duplex mismatch, and customer complaints about
"poor Internet performance".

"Been there, done that" - which is why we've changed our approach recently,
and now go to autoneg wherever it works (which it does most of the time).

> But what if the interface goes into the errdisable-mode (shutdown)? Do
> you have any recommended
> "errdisable recovery"-settings which you use or are there any
> expirienced users out there which are using "errdisable recovery all"?

We're using the defaults - that is, no auto-recovery.  If the port
goes into errdisable, there is a reason for it.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de