[c-nsp] NPE-G1 support for jumbo frames

[Lasher, Donn]

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jose
To: Gerald Krause
Subject: Re: [c-nsp] NPE-G1 support for jumbo frames

Gerald Krause wrote:
> Jose schrieb:
>   
>> We have not been able to change the MTU for the PA-FE-TXs to anything

>> larger than the standard 1500.  Every time you try and change it, it 
>> spits back an error about not being allowed on this interface.  This
is 
>> with the 7206VXR NPE300 running 12.2(15)T.


One other "oh surprise!!!" is the fact that the NPE-Gx built-in ports
won't do over MTU of 1500 when their speed is set to anything other than
1000.

Huh? Come again?

Yep.. that's right... set the speed to 100, and the max MTU is 1500. Set
the speed to 1000, and the max MTU is now 9216. Same port, same
GBIC/copper, same code.

Found this one in regression testing before we upgraded a mess of
NPE-300's to NPE-G2's. We ended up having to leave the PA-FE-TX's in for
a couple months, until a planned switch upgrade could be completed ahead
of schedule. Others might not be so fortunate.