From: Shanky (shankyz@gmail.com)
Date: Thu Jul 13 2006 - 09:22:28 ART
I suggest you read JD vol II, there is a clear case study on the usage and
function of BGP Backdoor.
The requirement is to prefer a IGP route over a EBGP route, now AD of IGP
being higher than EBGP, normally the EBGP learnt route is preferred and
placed in RT, by using the BGP backdoor for the remote network on the local
router, the AD for EBGP learnt is changed to 200 thus making the IGP route
preferred one.
Now as you configure the remote network under router bgp AS on local router,
this will start advertising for it which is not correct, hence the backdoor
keyword to prevent the local router from advertising it.
Hope it helps.
Shanky
On 7/13/06, srdja blagojevic <srdja1@pexim.co.yu> wrote:
>
> Aamir,
>
> AFAIK on the router receiving the network.
>
> HTH,
> Srdja
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Aamir Aziz
> Sent: Thursday, July 13, 2006 11:56
> To: ccielab@groupstudy.com
> Subject: BGP Backdoor
>
> Hi there people,
>
> I have understood what the BGP backdoor command does, all I am trying to
> understand is where are we going to issue this command, on the router
> receiving the network or the routing originating it.
>
> Thanks
> Aamir
>
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