From: Jason Aarons (jaarons@xxxxxxxxxxx)
Date: Thu Sep 16 1999 - 21:57:31 GMT-3
Thing of it in Internet vs intranet terms.
When acting as a transit you should disable sync to pass through 60,000
routes.
When acting as a stub AS if you had 60,000 routes would you want to
redistribute them into your internal network ? Most likely not. You would
set a default to one/two/three EBGP routers and let them deal with the
60,000 routes.
HTH - jason
----Original Message Follows----
From: "Peter Van Oene" <vantech@sympatico.ca>
Reply-To: "Peter Van Oene" <vantech@sympatico.ca>
To: <ccielab@groupstudy.com>
Subject: BGP confusion
Date: Thu, 16 Sep 1999 19:11:39 -0700
Ok, I have an IBGP router with a bunch of routes in its BGP table. Unless
I disable synch, it does not post them in the main routing table. I assume
this is because it does not have an IGP route for the listed networks.
This confuses me somewhat though. If you have a ton of networks learned
via BGP and you are a transit AS that requires the use of intermediary
IGBP routers, why do you have to duplicate all of the routes via IGP just
to do routing? If thats the case why run BGP internally at all? Why no
just redist into OSPF? Obviously I'm missing something key.
Can anyone tell me where my thinking is awry here?
Peter Van Oene
Senior Systems Engineer
UNIS LUMIN Inc.
www.unislumin.com
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