From: ZEESHAN SANAULLAH (zeeshan_dreamcatcher@hotmail.com)
Date: Fri Nov 21 2008 - 05:57:32 ARST
From: zeeshan_dreamcatcher@hotmail.com
To: aahmedejaz@gmail.com
Subject: RE: Frame-Relay dlci Confusion
Date: Thu, 20 Nov 2008 22:57:02 -0900
sorry ....
the inverse arp is disabled on R1 and R2 (the spokes) not on R3 ( the HUB)
so they dynamically map R3 but not each other.
My question is what should be the output of show frame-relay pvc command.
Because in Lab i have seen two outputs ...
1 - the spokes have two active DLCIs but only the one to hub is active and
other is unused.
2- the spokes have two active DLCIs both of which are active
> Date: Fri, 21 Nov 2008 12:46:53 +0500
> From: aahmedejaz@gmail.com
> To: zeeshan_dreamcatcher@hotmail.com
> Subject: Re: Frame-Relay dlci Confusion
> CC: ccielab@groupstudy.com; narbikk@gmail.com
>
> Hi,
>
> First of all what you are asking is a bit confusing. If the lab asks you to
> disable inverse arp and the routers should learn dlci's dynamicaly then
> thats not possible as far as i know. In this situation you must configure
> the hub router interface which is R3 subinterface as multipoint without
> disabling the inverse arp feature. The router might learn a lot of dlci's
> which you can verify through ' show frame-relay map ' command. Then what
you
> do is staticaly disable the dlci's which you do not need i-e ' no
> frame-relay inverse-arp ip 213 ' , this way you will have only have the
> dlci's pointing to R1 and R2. Same thing you do on R1 and R2 without
> disabling the inverse arp and blocking the dlci's which you do not need.
>
> I hope this works for you.
>
> Regards,
>
> Ahmed Ejaz.
>
> On Fri, Nov 21, 2008 at 12:28 PM, ZEESHAN SANAULLAH <
> zeeshan_dreamcatcher@hotmail.com> wrote:
>
> > Hello GS !!!!
> >
> > I am a little confused in this basic thing regarding frame-relay dlci.
> >
> > Lets take 3 routers R1,R2,R3
> >
> > R3 is the HUB and R1 and R2 are spokes
> >
> > The Frame-Relay switch is configured in a full mesh configuration.
> >
> > But the task asks to configure the routers in Hub and Spoke manner.
> >
> > R1 , R2 and R3 must have ip 10.1.1.1/24 and 10.1.1.2/24 and 10.1.1.3/24
> > respectively.
> >
> > Disable inverse-arp on R1 and R2 so that they only learn dynamic mapping
to
> > R3
> >
> > All config is to be done on Main interfaces.
> >
> > Now the confusion is that ... when all configs are done correctly.
> >
> > what must be the output of show frame-relay pvc command.
> >
> > i mean R1 and R2 must have learned two dlci.
> >
> > The one to R3 must be active........
> >
> > what about the other ???? the one between R1 and R2.
> >
> > What i get in Lab is some times it is unused but active and sometimes
used
> > and
> > active as well.
> >
> > any idea ??
> >
> > Regards
> > Zeeshan
> >
> >
> >
> >
> >
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