RE: Aggregating channels...

[Brian Palmer <bpalmer@dolfin.com>]

There are boxes that will do it.  Astrocom makes one (www.astrocorp.com).
I've played with it, but not in a production environment.  Seemed stable
enough here.

Brian

-----Original Message-----
From: Ralph Forsythe [mailto:rforsythe@centerone.com] 
Sent: Monday, December 03, 2001 4:49 PM
To: Arnaud Brand
Cc: tech@openbsd.org
Subject: Re: Aggregating channels...


AFAIK, you cannot do this with two separate providers, as the routes from
the Internet to each of those would be totally different.

This is typically only done using data lines connected to the same provider
(i.e. dual T1's or the like), and even then I don't think obsd (or any other
*nix system) provides this feature, I've only ever seen it on routers.

The only way to "aggregate" the bandwidth on those lines would be to somehow
split connections across them, where you just alternate sessions between
lines (but a session would always travel the line it originated on, jumping
to the other would be impossible).  If you figure out how to do this, let us
know! =)

- Ralph

On Mon, 3 Dec 2001, Arnaud Brand wrote:

> Hello,
>
> Please excuse me for my bad english.
>
> I would like to aggregate to distinct network connections ( internet 
> connections in fact), and I couldn't find any information about that 
> on the Internet.
>
> My hardware looks like this:
> rl0 -> dhcp ethernet interface on cable modem (provider 1) rl1 -> 
> 10.0.0.1/24 ethernet interface on ADSL modem (10.0.0.138, pptp, 
> provider 2) ne3 -> 192.168.0.1/24 private network
> ne4 -> 192.168.1.1/24 DMZ
>
> Everything's on a box running OpenBSD3.0.
> I looked mailling archives about multilink PPP, ALTQD diffservs for 
> Linux, but I couldn't find out how to aggregate rl0 and rl1.
>
> Of course, I could setup the box as a router, but if done so, I 
> wouldn't benefit of the sum of the 2 bandwidths...
>
> If someone knows something about doing it without rewriting the 
> routing kernel, please tell me. Thanks a lot..
>
> Arnaud Brand
> arnaud.brand@free.fr