[3744] in North American Network Operators' Group
Re: Customer AS
daemon@ATHENA.MIT.EDU (Avi Freedman)
Mon Aug 19 13:46:27 1996
From: Avi Freedman <freedman@netaxs.com>
To: michael@memra.com (Michael Dillon)
Date: Mon, 19 Aug 1996 13:28:17 -0400 (EDT)
Cc: jon@branch.com, hank@rem.com, smd@chops.icp.net, randy@psg.com,
nanog@merit.edu, hank@sprint.net
In-Reply-To: <Pine.BSI.3.93.960819091348.25233d-100000@sidhe.memra.com> from "Michael Dillon" at Aug 19, 96 09:15:42 am
> On Mon, 19 Aug 1996, Jon Zeeff wrote:
>
> > Not only is it reality, it is, from the customers point of view, a good
> > idea.
>
> > There is a solution to the customer who wants to be dual-homed
> > to two providers and not contribute to the "routers can't handle the
> > tables" problem. Just don't announce your more specifics to your backup
> > provider unless you know your primary is down. Some type of automated
> > script can do it.
>
> Has any of this been WELL documented somewhere so that when a customer is
> asking about multihoming we can point them to a website where they can
> learn the right way to do multihoming?
>
> Michael Dillon - ISP & Internet Consulting
> Memra Software Inc. - Fax: +1-604-546-3049
> http://www.memra.com - E-mail: michael@memra.com
Some of it is at http://www.netaxs.com/~freedman/multi.html. I'll see about
making it better and simpler - and will add some simple configs that are
somewhat bit more idiot-proof.
And it has to be clear that if:
a) Your providers will configure their networks to only announce you if
your line is up (+/- any damping), and
b) You believe that a load-balanced defaul route with 'ip route-cache' on
will do good data delivery out from your network
That BGP does not need to be involved at all for the multi-homed.
Avi
