RE: On the subject of multihoming

["Tomas L. Byrnes" <tomb () byrneit net>]

This sort of thing is usually done with some sort of multi-port outbound
NAT device that chooses the source interface to NAT from based on some
"quality" metric it generates for the destination, and a state table it
keeps for all the outside IPs.

Products that do this include FatPipe, Radware Linkproof, and Mushroom
networks.


> -----Original Message-----
> From: Charles Wyble [mailto:charles () thewybles com]
> Sent: Tuesday, November 04, 2008 12:32 PM
> To: NANOG list
> Subject: On the subject of multihoming
>
> 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.
>
> Could this be done with a copy of the BGP tables?
>
> Obviously as they are consumer connections, I wouldn't get a BGP feed
so
> would need to download a copy, which has the risk of stale data.
Perhaps
> some sort of multihop BGP setup?
>
> I have done some research and found a lot of references to small site
> multihoming without BGP for link redundancy but not for traffic
> engineering.
>
>
> Thanks.
>
> Charles