[c-nsp] 3508 / GBIC ZX / Minimum IOS

[Adrian Chadd]

On Tue, Jan 09, 2007, Richard A Steenbergen wrote:
> On Tue, Jan 09, 2007 at 06:00:21PM -0500, Deepak Jain wrote:
> > All I can say (and I may be bitter) is that if autoneg on GigE was so 
> > grand... um... why has nearly every SP found reason to disable it?? And 
> > shouldn't auto neg (without neg on the other side) default to the same 
> > state on both sides?? -- you know, put the "auto" in "autoneg"??
> 
> In all honesty, autonegotiation problems have been effectively gone for a 
> very very long time now. The real problems were in the first generation 

Thats weird. Only last week I walked across a catalyst 4500 w/ sup4,
3x48 port 10/100/PoE and 1x48 port 10/100/1000 PoE (forget model numbers).
The Catalyst 4500 began autonegotiating a handful of gigabit ports
at 10/full. This didn't include the Netapp (thankfully!) but did include
the Callmanager/Unity boxes and a few application servers.

This only occured on switch reboot. shut/no-shut fixed it once the switch
was up. Of course, so did forcing gige speed on the link. Very unfortunate!

As per usual, there wasn't time to figure out what was causing it as the
customer was a bit irate. It was just happening.

> Fortunately the 10GE spec did what the 1GE spec should have done, and 
> cleaned house of legacy things which no longer have a place in modern 
> networks like "no negotiation" and "half duplex". :)

Thankfully. :)



Adrian