Problems connectivity GE on Foundry BigIron to Cisco 2950T

Sun Jan 15 23:50:07 UTC 2006

Hi,

On Sun, 15 Jan 2006, Paul G wrote:

> ----- Original Message ----- From: "Farrell,Bob" <bobf at studentsonly.com>
> To: "Randy Bush" <randy at psg.com>; "David Hubbard" 
> <dhubbard at dino.hostasaurus.com>
> Cc: "Sam Stickland" <sam_ml at spacething.org>; <nanog at nanog.org>
> Sent: Sunday, January 15, 2006 4:45 PM
> Subject: RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T
>
>> Cisco commands-
>
>> speed 1000
>> duplex full
>
> the bigiron wants (iirc):
>
> spe 1000-full
>
> i strongly suggest you peruse the cli reference for both devices.

On the foundry GBIC blades you can't configure the speed and duplex 
settings, they only support 1000-full.

(config-if-e1000-1/2)#speed-duplex 1000-full
Error - can't change speed and duplex mode

I've dug through as much information as I can about the cisco 2950T and 
802.3z/802.3ab and disabling the auto-negiation. There appears to be no 
command at all available to do this.

The cabling arrangement is:

Foundry -- Straight -- Patch -- Underfloor -- Patch -- Crossover -- Cisco
  GBIC       Cable      Panel     Straight     Panel      Cable

If I replace the final crossover cable with a straight, change the foundry 
to a 10/100 port, and plug the final end into a host NIC instead of the 
cisco I get a connection. Crossover cable has been changed twice now, and 
the RJ45 GBIC was previously working in a cisco 6500.

I am extensively familar (at least I believe I am) with both these models, 
and this one has me stumped.

If nobody else can see any configuration errors I guess I'm down to 
hardware issues.

Sam