Re: BGP Backdoor Problem

From: Johnny Dedon (johnny.dedon@xxxxxxxxxx)
Date: Tue May 08 2001 - 12:49:59 GMT-3


   
Dean,
The network 152.1.20.16 backdoor command needs to be placed on the router in
AS2 that connects to R1 in AS1. This allows AS2 to advertise that route to
R1 with an admin distance of 200. R1 should then have a better metric to R7
via the eigrp link.

HTH
Johnny Dedon
Senior Staff Consultant
Exodus Professional Services
johnny.dedon@exodus.net
www.exodus.net
----- Original Message -----
From: "Dean, Justin" <Justin.Dean@nrtinc.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, May 08, 2001 10:21 AM
Subject: BGP Backdoor Problem

> Has anyone ever got the BGP Backdoor to work? I had R1 in AS 1 with 2 ebgp
> peers in AS 2. AS2 Had an ebgp peer in AS 3 (R7). R1 and R7 were directly
> connected running EIGRP. R7 was advertising a route 152.1.20.16 /28 via
BGP
> and via EIGRP. R1 was getting both /28 routes and choosing the EBGP route
> because of the better AD. I needed to make it choose the EIGRP route
without
> just changing the distance for the protocols. I put "Network 152.1.20.16
> mask 255.255.255.240 Backdoor" under my bgp process and cleared all bgp
> sessions everywhere. The eigrp route would show up at first, until the
ebgp
> route established its peers again then it would override the eigrp route.
Am
> I missing something here or is this just not working? thanks,
>
> Justin M. Dean, CCNP, CCDP
> Network Engineer
> NRT, Incorporated
> (949)367-3438
> justin.dean@nrtinc.com
> **Please read:http://www.groupstudy.com/list/posting.html
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