On the subject of multihoming

Murtaza leothelion.murtaza at gmail.com
Wed Nov 12 11:55:08 CST 2008


Right now wee are also looking into the same question with the help of
Overlay Routing. As far as Multihoming is concerned, there is a good work by
jenifer rexford
http://www.cs.princeton.edu/~jrex/papers/multipath06.pdf<http://www.cs.princeton.edu/%7Ejrex/papers/multipath06.pdf>.
In fact IETF guys were thinking to include it in BGP implementation.

Hope it would be helpful

On Wed, Nov 12, 2008 at 10:18 PM, Scott Doty <scott at sonic.net> wrote:

> [ 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
>
>
>
>


-- 
Ghulam Murtaza
Lahore University of Management Sciences



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