Sterling, we do consulting on that type of networking questions.  Hit me
off-list if you want and we can get you a ticket put in and a 1/2 hour
conversation can go a long way to help you get some understanding..  I'm
sure though there will be a good discussion here. 

Dennis Burgess, CTO, Link Technologies, Inc.
[email protected] - 314-735-0270 - www.linktechs.net


-----Original Message-----
From: Af [mailto:[email protected]] On Behalf Of Sterling Jacobson
via Af
Sent: Wednesday, November 19, 2014 4:04 PM
To: '[email protected]'
Subject: [AFMUG] Need some WAN topology/protocol advice

I know a lot of us here span networks across large areas and have
multiple providers.

I want my IP address space to be redundant and I guess I can either make
sure I have a ring with OSPF/ static routes, or I can BGP.

Since I sell to other providers that would like BGP and I would like to
preserve my routing by /24 classes via BGP.
Maybe I should just use BGP at each site/area?

That would restrict me to keeping the sites at /24 class size or larger
though, since external BGP doesn't like anything smaller.

I think that's ok, but it does lend itself to waste if I come short of
using the 254 IP's or I just break the barrier into another /24 for the
site.

But I can't think of any way around it without relying on infrastructure
to ring me back to a central BGP point or two, using OSPF inside.

What do you guys do?

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