From: Bhisham Bajaj (bhisham.b@xxxxxxxxxxxx)
Date: Fri Jun 28 2002 - 12:48:24 GMT-3
Try the network backdoor comand with the mask
Regards,
Bhisham
----- Original Message -----
From: Annu Roopa <annu_roopa@yahoo.com>
To: Georg Pauwen <pauwen@hotmail.com>; <wicked01@ix.netcom.com>;
<Cisco@groupstudy.com>; <ccielab@groupstudy.com>
Cc: <derekc@mad.scientist.com>; <ccie5626@yahoo.com>; <tron@huapi.ba.ar>;
<dsapp@cisco.com>
Sent: Friday, June 28, 2002 7:40 PM
Subject: Re: BGP Question
> Folks,
>
> First of all thanks to all who took time to reply.Here
> is what i observed.There are two ways to do it.Both do
> the same thing.
>
> The second way works and the backdoor STILL IS NOT
> WORKING AS EXPECTED.THE IOS verison is 12.1(5)T on all
> routers.
>
> 1.Use the BGP back door on R2 using 'backdoor
> 175.10.10.0' on r2. This is preferred way.
>
> This command tells BGP to force the preferred BGP path
> of 172.16.1.0 to AD=200 and considers the iGRP path
> with 100.But this is also considers the network 175.10
> as local and does not advertise it....assume a router
> connected to R10 with Ebgp.this router will not use
> this IGP link thru R2/R12 and instaed use the R10-r12
> link which is what is expected. Look into doyle 2 for
> more details.
>
> 2.Use the Network command under BGP process as 'net
> 175.10.10.0' on R2 as some said.This too works but
> unlike the above it advertises this path to R10 and
> its ext neighbors and they could be using the r2-r12
> IGP path which is not preferred. Refer Doyle II.
>
> Bcoz 175.10 is in the R2 BGP table it advertises it
> with network command and sets the Ad to 200 and
> prefers the IGRP path over eBGP path.
>
> Hope that helps. I have tried rebooting and
> re-intializing BGP no luck.MAYBE this is a bug or ???
>
> Anyone else with ideas.
>
>
>
>
>
>
>
> =====
> Thanks in advance for ur time and replies.
> Annu.
>
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