[5974] in North American Network Operators' Group
RE: A proposal for reducing routes due to multihoming
daemon@ATHENA.MIT.EDU (Vadim Antonov)
Wed Oct 30 17:12:29 1996
Date: Wed, 30 Oct 1996 13:56:42 -0800
From: Vadim Antonov <avg@quake.net>
To: alexis@panix.com, peter@telescan.com
Cc: nanog@merit.edu
Alexis Rosen wrote:
>Bill Simpson claims that this idea is ~10 years old, but if so perhaps
>it's time to air it again....
>It's dead simple, really: Assign address blocks to pairs of providers.
>Both providers announce those blocks all the time, and assign addresses
>out of those blocks to customers who multihome between those two
>providers.
That idea also assumes that providers exchange specifics within
shared blocks. Otherwise it won't work.
Doesn't sound like big savings... And is certainly a hell to manage.
I demonstrated some time ago that the lower boundary on the routing
table size given today's Internet topology is about 300 routes.
That was done by analyzing AS-paths -- i.e. the assumption was that
everything can be aggregated down to 1 route per AS.
The result generally indicates that 90% of routes can be eliminated by
renumbering and aggregation. The rest is simply too few to worry about.
--vadim
