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Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T

  • From: Sam Stickland
  • Date: Sun Jan 15 18:51:48 2006

Hi,

On Sun, 15 Jan 2006, Paul G wrote:

----- Original Message ----- From: "Farrell,Bob" <bobf@studentsonly.com>
To: "Randy Bush" <randy@psg.com>; "David Hubbard" <dhubbard@dino.hostasaurus.com>
Cc: "Sam Stickland" <sam_ml@spacething.org>; <nanog@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




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