From: Peter Van Oene (vantech@xxxxxxxxxxxx)
Date: Fri Sep 17 1999 - 11:40:53 GMT-3
This is what gets me. All reference material tells me that I should have
Synch on a Transit AS because its crucial to the successful routing of
transit packets. I can certainly see why I need to ensure that my routers
know what to do with the traffic they recieve, however I just can't see
why they need to know about from two sources (IGP/BGP).
Peter Van Oene
Senior Systems Engineer
UNIS LUMIN Inc.
www.unislumin.com
----- Original Message -----
From: Jason Aarons <jaarons@hotmail.com>
To: <vantech@sympatico.ca>; <ccielab@groupstudy.com>
Sent: Thursday, September 16, 1999 5:57 PM
Subject: Re: BGP confusion
> 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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