[ resent to list, was sent from the wrong address -sd ]
Charles Wyble wrote:
I'm working on a small experiment which utilizes multiple outbound
links (in the experiments case multiple consumer 3G connections [to 2
Sprint/2 Verizon/1 AT&T], Time Warner Cable Modem and an SBC Global
DSL connection.
What is the best way to do outbound traffic engineering? I would like
to be able to determine the best path possible and send traffic out
the appropriate link.
Not sure if this is useful, but I thought I'd contribute a point on the
curve...
from NANOG 9:
http://www.academ.com/nanog/feb1997/multihoming.html
Obquote: from Paul Vixie's presentation,
from Stan Barber's notes, here is the "meat of the matter":
_ _ _ _ _ _ _
Per-interface Default Route
* BSD TCP binds outbound route to PCB on SYN-ACK
* Our trick: remember the inbound interface identity from the SYN
* Each interface has its own "default route"
* For outbound TCP and all UDP, a normal default is also needed.
_ _ _ _ _ _ _
Hope that helps...
-Scott
