Newbie network upgrade question, apologies in advance to NANOG

Wed Jul 2 17:41:26 UTC 2003

Also, you may want to set your border router (the one with the serials to your ISP) to route "per packet" as opposed to allowing the routes to cache.  This will distribute the bandwidtch evenly across your T1's.  If you don't, then a single high traffic session or destination can consume an uneven amount of bandwidth on one of your lines.  You can ask your ISP to do this as well for incoming packets.

	-=Vandy=-

-----Original Message-----
From: Andy Dills [mailto:andy at xecu.net]
Sent: Sunday, June 29, 2003 3:02 PM
To: Mary Grace
Cc: nanog at merit.edu
Subject: Re: Newbie network upgrade question, apologies in advance to
NANOG

On Sun, 29 Jun 2003, Mary Grace wrote:

> So, is it still true that we do not need anything more powerful than a 4500
> or 4700 to run this system?  I believe that is true if we take default
> routes advertised by the upstream on both sides, and the two diverse-path
> circuits ARE being advertised out of the same upstream AS, but is it still
> true if we were nuts enough to want to take full routes anyway from this
> same provider?

If you're multihomed to the same provider, I wouldn't even bother with
getting an ASN and running BGP at all.

I assume they are providing your IP space as well...if so, let them
announce the route, and let their internal routing policy decide which
circuit delivers the bits to you.

Then, just configure two static default routes, to the two serial ports of
your upstream. In this scenario, you're current router should be fine.
Buy your router used, you're wasting your money otherwise.

To answer your question directly, there is essentially no benefit to
taking full routes from your provider from each location.

Andy

---
Andy Dills
Xecunet, Inc.
www.xecu.net
301-682-9972
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