Re: [OT]Creating a unidirectional link failure scenario

Sorry if I have created a confusion. Udld is not available on ios xr we are
looking for some other solution for this case one thing that came in my
mind is to use autonegotiation on both the devices. Autonegotiation helped
me for gsr as it made the link down. However port on 4500 is down no matter
what the configuration is. So in summary if rx is removed from the gsr end
the link stays up on the gsr end as autonegotiation is off by default as
soon as I configure autonegotiation link at gsr goes down.
On Apr 5, 2012 9:49 PM, "Joe Sanchez" <marco207p_at_gmail.com> wrote:

> UDLD doesn't work with L3 interfaces? Might want to check on UDLD.
>
> Regards,
> Joe Sanchez
>
> On Apr 5, 2012, at 8:00 AM, sundeep sadhwani <sundeep.sadhwani_at_gmail.com>
> wrote:
>
> > 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
> >
> >
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Received on Thu Apr 05 2012 - 22:13:25 ART