Re: slow ethernet

["Dom De Vitto" <dom@DeVitto.com>]

Ok, going from various pieces of various vendors equipment to
various other pieces of various other, or the same vendor equipment,
sometimes *repeatable* autoneg problems occur.

I guess http://standards.ieee.org/getieee802/download/802.3-2002.pdf
has a few too many 'may's in section 28, or vendors just can't
get it right.

Dom
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Dom De Vitto                                       Tel. 07855 805 271
http://www.devitto.com                         mailto:dom@devitto.com
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Where do you want to go today?  Same as every day.... Windows Update.

-----Original Message-----
From: Adam [mailto:suck@my-balls.com] 
Sent: Sunday, February 15, 2004 10:56 PM
To: eric-dated-1075869104.214bbab93fbb25@catastrophe.net
Cc: Dom De Vitto; misc@openbsd.org
Subject: Re: slow ethernet

On Sun, Feb 15, 2004 at 11:58:59AM -0600,
eric-dated-1075869104.214bbab93fbb25@catastrophe.net wrote:
> On Sun, 2004-02-15 at 12:21:57 -0500, Adam proclaimed...
> 
> > That's complete bullshit.  
> 
> I see your bullshit and raise you more.
> 
> > Autonegotiation is not some magic voodoo, its a simple protocol.  
> > Every time I've seen someone complaining about autoneg, its because 
> > they forced one side, and left the other auto, or have a garbage 
> > device ($40 "switches", lots of cruddy wireless devices) that is 
> > broken.  Broken devices does not equal broken protocol.
> 
> I've seen autonegotiate fail with Cisco 2924, 3548's, 6509's and 
> 6513's using fxp *and* bge devices. The bge's are notorious for 
> failing every second or third time they have to negotiate.

I've never had any autoneg problems with any of our catalysts or even the
3com junk, using dlink, realtek, sis, fxp, em and bge.  Believe it or not,
ethernet autonegotiation is a standard protocol, and its a very simple one
at that.  If its not working, then you have something broken, fix the
broken, don't blame the protocol.

> Autoneg is completely an opinion thing ; it depends on your 
> experience, hardware, and the way the solar winds are going that day.

No, its not.  That's the point.  That's like saying TCP/IP is completely an
opinion thing just because there are things that can be broken to make
TCP/IP stop working.  If autoneg isn't working right, something is broken,
its not just how its supposed to be, there is something wrong that you can
fix.

Adam