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

  • From: David Hubbard
  • Date: Sun Jan 15 15:22:31 2006

You are using a crossover cable right?  If that's all set, you
do need to have neg-off on the Foundry and "no nego auto" on the
Cisco.  I haven't used the rj-45 gbics in the Foundry equipment
before, not sure if that could be an issue.  I would go with
the hard set 1000-full on both sides.


From: Sam Stickland
> Hi,
> I'm having a right mare trying to get a Foundry BigIron to 
> connect up to a cisco 2950T, via Gigabit copper.
> The Foundry BigIron is using a cisco RJ45/copper GBIC that 
> was pulled from a live cisco 6500, where it was working
> fine. The cisco 2950T has two fixed 10/100/1000 RJ45 ports.
> The cables between the equipment have been tested and are fine.
> The Foundry has three different types of the gigabit negiation modes:
>    auto-gig        Autonegotiation
>    neg-full-auto   Autonegotiation first, if failed try 
> non-autonegotiation
>    neg-off         Non-autonegotiation
> I've tried all three, complete with all the other 
> possibilities with the cisco 2950T (which has fixed full
> duplex operation, but can be set to 'speed auto' or
> 'speed 1000').
> None of these combinations bring up the link. The cisco 2950 
> never gets a link light. The Foundry gets a link light
> regardless when it's mode is set to 'gig-default neg-off'.
> I'm at a bit of a loss to explain this. Does anyone know of any 
> configuration issues that can explain this, or is it time to start 
> swapping out hardware components?
> Sam

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