Re: freeze under heavy network load

[Diana Eichert <deichert@wrench.com>]

On Fri, 8 Mar 2002, Jedi/Sector One wrote:

> On Fri, Mar 08, 2002 at 09:14:34PM +0100, jean-philippe wan-hoi wrote:
> >    I don't know if it will help someone in the future, but I don't spend
> > too much time writing here the solution for my problem. I just switched
> > off the autosense mode for the card. The system is not freezing anymore
> > since then. bye.
> 
>   Do that only if you really experience bad things in auto-negociation mode.
>   
>   I had a lot of trouble in the past on machines whoose NICs (most were
> 3C905 cards) were forced to 100baseTX-FD . Catalyst switches had troubles
> with forced NICs configuration, and the result is that they often switched
> the ports to half-duplex.
> 
>   Auto-negociation is a safe bet in most cases.

my experience, in a facility that has a couple hundred large
5000/5500/6500 CatSwitches, is that auto negotiation is at fault most of
the time, but on the Cat's themselves.  We usually fix the port speed and
duplex and let the connected system auto-negotiate.  Letting both sides
auto-negotiate is a real crap shoot.

my US$.02 worth