Re: [OT]Creating a unidirectional link failure scenario

Thanks for the reply.however i am using gig at the 4500 side i see that the
port is down at the 4500 side.

I have faced this issue in the live network where we have to change the
fibre cable as both the interfaces were up and bcoz of cdp we came to know
that there is unidirectional link failure as 4500 was able to see GSR but
GSR was unable to see 4500. we cant use UDLD in this scenario as GSR
interface is layer 3.

Regards
Sundeep

On Thu, Apr 5, 2012 at 8:38 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:

> What do you mean by simulate ? Cause you have already done that
> by removing one fibre!
>
> In a 10/100 ethernet you can cut one wire. No such luck on giga.
> In dynamips, you can block one stream or point to some unused port.
>
> -Carlos
>
>
>
> sundeep sadhwani @ 05/04/2012 06:49 -0300 dixit:
>
>> Hi all
>>
>> I would need your suggestions in creating an unidirectional link failure
>> scenario.
>>
>> i have two devices connected back to back GSR-----4500 through fibre. I
>> have removed the Rx of the fibre from the GSR end. At the GSR end if i
>> disable the negotiation the link interface on GSR comes up however if i
>> disable the negotiation on 4500 port, the interface is still down.
>>
>> Any suggestion of simulating this would be appreciated.
>>
>> Regards
>> Sundeep
>>
>>
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> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina

Blogs and organic groups at http://www.ccie.net
Received on Thu Apr 05 2012 - 21:00:31 ART