From: James Matrisciano (jmatrisciano@kenttech.com)
Date: Tue Feb 01 2005 - 18:04:23 GMT-3
Main "gotchya" on the BGP-ID is to make sure that if you are running
sync on and the route is learned from a different router-id in the IGP
that you have a matching router-id in your bgp advertisements,
otherwise, the learning router will not advertise this route as the
router-id does not match up right.
jm
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Bajo
Sent: Tuesday, February 01, 2005 3:49 PM
To: Jonathan ZD
Cc: CCIE - GS
Subject: Re: BGP Router-ID
Jonathan it will be valid only if
a) either the address is a loopback interface or
b) a physical interface address.
The interface does NOT need to be running BGP.
Take a look at Jeff Doyle's Routing TCP/IP Vll, page 154.
On Tue, 1 Feb 2005 12:03:22 -0800, Jonathan ZD <Nuvo25@hotmail.com>
wrote:
> Is it neccessary that BGP Router-ID has to be reachable by its
BGP-peers. For
> example, if the following configuration valid?
>
> Rtr 01
>
> router bgp 100
> bgp router-id 1.1.1.1
> nei 192.168.21.2 remot 100
>
> ---------
>
> Rtr 02
>
> router bgp 100
> bgp router-id 2.2.2.2
> nei 192.168.21.1 remot 100
>
> *** The router-id (1.1.1.1 and 2.2.2.2), in this case, is not
reachable by IGP
> between both routers.
>
> ----------
>
> Thanks
>
>
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