[33769] in North American Network Operators' Group
Re: Tricky BGP into IGP Question
daemon@ATHENA.MIT.EDU (Danny McPherson)
Tue Jan 23 21:26:58 2001
Message-Id: <200101240224.TAA16820@tcb.net>
To: "'nanog@merit.edu'" <nanog@merit.edu>
From: Danny McPherson <danny@ambernetworks.com>
Reply-To: danny@ambernetworks.com
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Date: Tue, 23 Jan 2001 19:24:33 -0700
Errors-To: owner-nanog-outgoing@merit.edu
I this 'trick' you're looking for is that of disabling BGP
synchronization (i.e., 'no synchronization' in IOS parlance).
Putting external things in your IGP is a really BAD idea,
BTW.
-danny
> What is the preferred way to get transit customers routing information into
> your IGP so that BGP will announce the route to it's neighbors.
>
> 1===2a===2b====3
> |
> 4
>
> 1 is the customer, announcing to 2a, who propogates 1's route to 2b and to
> 4. 2b will not announce the route to 3 as it doesn't have a route in it's
> routing table for 1's route. I was thinking about redistributing bgp into
> my igp using a route-map based on as-path filter, but that seems somewhat
> kludgy. What are you all doing to accomplish this or am I just missing
> something here?
