redistribute IGP routes to BGP

Patrick W. Gilmore patrick at
Fri Nov 2 23:37:17 UTC 2001

At 11:54 AM 11/1/2001 -0600, Zhao, Xingguo wrote:
 >I didn't get how this helps to make this redistribution useful.
 >Could you give me more hints?

FWIW: I do not use it, and neither do most of the people I know - on 
ciscos.  On Junipers, apparently they like you to do this, not sure why.

On a cisco, many people say the route is already in the IGP (has to be to 
be advertised by BGP), so why not just redistribute with filters.  I prefer 
to put the prefixes into BGP manually, and nail something to the loopback 
for the IGP.  If you make a mistake in typing the prefixes in, you get a 
single route wrong.  If you make a mistake in your filter during 
redistribution, all kinds of bad things can happen.

My $0.00000000002.


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