[1764] in linux-net channel archive
Re: Static vs dynamic routing from ISP
daemon@ATHENA.MIT.EDU (Alan Cox)
Thu Feb 1 03:53:25 1996
From: Alan Cox <alan@cymru.net>
To: john@piper.gats.hampton.va.us (John Burton)
Date: Wed, 31 Jan 1996 09:40:58 +0000 (GMT)
Cc: jonathan@nrgup.com, ecloud@goodnet.com, linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.91.960130083016.21463B-100000@piper.gats.hampton.va.us> from "John Burton" at Jan 30, 96 08:40:16 am
> Huh? The Internet runs on *static* routing tables ? Not the portion of the
> Internet I'm connected to. As far as the rest (including the Backbones) I
> don't think static routing could *handle* the dynamic nature of the Internet
> unless you had one person assigned to *every* router connected to it to
> make sure that the routing tables were up to date.
The internet backbones run almost entirely BGP4 which is a very compute
intensive high memory requirement routing protocol which is aware of the
entire network. It also includes policy based routing in that you can
talk in terms of provider networks and rules between them and say things
like
"route all mcinet traffic via x"
"advertise our route to sprint except to milnet"
BGP4 is overkill for people with one net connection. OSPF and RIP sit
under that (as can static routing) and funnel the data to the nearest BGP4
aware target.
Alan
