[c-nsp] One Cat6k/Sup2T is software switching, its identical partner is not

[Jeroen van Ingen]

Hi Łukasz,

>> We have two Cat6k's with Sup2T in our network, both running IOS 15.1(1)SY3.
>
> Are they really identical, down to Sw/Hw revisions and ROMMON
> versions?

You got me there. PFC4 versions differ: the one doing everything in hw 
has hw rev 2.0, the one partially software switching currently has a 
PFC4 hw v1.1 and previous sup had PFC4 hw 1.6 iirc. Line cards do have 
the same HW rev and ROMMON versions are identical too.

I mentioned this to TAC but the response was that that couldn't be 
related. My question about what sort of changes were made or could have 
been made in those revisions wasn't answered though. Did you ever hear 
details about differences in hw revisions?

> It seems that something on the device side either interprets
> the configuration in different order and this hits some
> rare bug, or there’s something other at the software/hardware
> border that you’re hitting.

Yeah, that was what I thought. Guess there's not much more to do than 
hope that our TAC case will eventually go to the right people. I heard 
it's on its way to the Cat6k BU and a friendly TME + our account 
managers are now tracking the case, so hopefully we'll see some progress 
next week.

Thanks,

Jeroen van Ingen
ICT Service Centre
University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands