Re: [OT]Creating a unidirectional link failure scenario

Sorry, what I meant is that you can not simulate a failure by cutting a
wire on 1000baseT, i.e., gig over copper.

Still I don't know what you are asking for...

-Carlos

sundeep sadhwani @ 05/04/2012 10:00 -0300 dixit:
> 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
> <mailto: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 <mailto:tron_at_huapi.ba.ar>> LW7
> EQI Argentina
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>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net