According to what I've heard from Qwest folks, they honor MEDS. (Taken with a grain of salt, it was part of a sales pitch). On Wed, Jan 17, 2001 at 12:25:50PM -0800, Christian Nielsen wrote:
On Wed, 17 Jan 2001, Leo Bicknell wrote:
user->server: 2->4->3 server->user: 3->1->2
Consider what AboveNet does. By honoring meds the following paths occur (abovenet as net 2 in the picture):
user->server: 2->4->3 server->user: 3->4->2
This assumes that the network you are peering with sends correct MEDs. This also assumes that one always honors MEDs. What happens during fiber cuts or when you are waiting for an upgrade on your circuits? Do you continue to honor MEDs and hurt the customer?
Honoring MEDs is not Black and White. I dont know one large network that honors all MEDs from every peer. For the most part, I would say that most providers do 'warm' routing. it just depends on what degree of warm you can live with.
Christian
-- Marius Strom <marius@marius.org> Professional Geek/Unix System Administrator URL: http://www.marius.org/ http://www.marius.org/marius.pgp 0x55DE53E4 "Never underestimate the bandwidth of a mini-van full of DLT tapes traveling down the highway at 65 miles per hour..." -Andrew Tanenbaum, "Computer Networks"