nanog mailing list archives
Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T
From: Sam Stickland <sam_ml () spacething org>
Date: Mon, 16 Jan 2006 00:02:43 +0000 (GMT Standard Time)
Replying to my own email..I've found some sites that suggest it's not possible to disable auto-negotiation on 1000Base-T since other operational parameters are negotiated including selection of the master clock signal. I was aware that flow control was negotiated, but not the clock signal.
Can anyone elaborate? Sam On Sun, 15 Jan 2006, Sam Stickland wrote:
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 2950TCisco commands-speed 1000 duplex fullthe 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 modeI'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 CableIf 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
Current thread:
- Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- <Possible follow-ups>
- RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T David Hubbard (Jan 15)
- RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T Randy Bush (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Mark Smith (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Martin Hannigan (Jan 15)
- RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T Farrell,Bob (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Paul G (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Elijah Savage (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Kevin Day (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Mark Smith (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Mark Smith (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Paul G (Jan 15)
- Re: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 15)
- Redux - RE: Problems connectivity GE on Foundry BigIron to Cisco 2950T Sam Stickland (Jan 19)