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Date:      Thu, 20 Mar 2003 14:37:06 +0100
From:      =?iso-8859-1?Q?Sten_Daniel_S=F8rsdal?= <sten.daniel.sorsdal@wan.no>
To:        "Matthew Seaman" <m.seaman@infracaninophile.co.uk>, <questions@FreeBSD.ORG>
Subject:   RE: Equal-cost multipath routing for FreeBSD 4-STABLE?
Message-ID:  <0AF1BBDF1218F14E9B4CCE414744E70F1F3C6A@exchange.wanglobal.net>

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 It is unclear wether one2many support bundling through VLANs as well.
 Any clues?

- Sten

-----Original Message-----
From: Matthew Seaman [mailto:m.seaman@infracaninophile.co.uk]=20
Sent: 20. mars 2003 14:25
To: questions@FreeBSD.ORG
Subject: Re: Equal-cost multipath routing for FreeBSD 4-STABLE?


On Thu, Mar 20, 2003 at 03:15:27PM +0200, Andrew Stesin wrote:

> suppose we have FreeBSD box `A' with 3 network interfaces (ip=20
> unnumbered or numbered - shouldn't matter). This 3 interfaces form 3=20
> parallel IP channels to some single destination `C' (let's think of=20
> another FreeBSD box `B' with another 3 interfaces at the other end and =

> `C' being an alias to lo0 of `B' box).
>=20
> Than let's consider either 3 equal static routes to `C' set at `A', or =

> OSPF with 3 equal cost routes to `C' from `A'.
>=20
> Is it possible to tell kernel to route packets between `A' and `B' in=20
> a round-robin way, so that each of 3 channels handle 1/3 of a total=20
> consumed bandwidth? Something like "equal-cost multipath" feature of=20
> Cisco IOS?

Yes.  See the ng_one2many(4) man page.  You don't need to futz about =
with aliases to lo0 on machine C: just make another ng_one2many cluster =
there and treat both of them as a regular network interfaces.

	Cheers,

	Matthew

--=20
Dr Matthew J Seaman MA, D.Phil.                       26 The Paddocks
                                                      Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey         Marlow
Tel: +44 1628 476614                                  Bucks., SL7 1TH UK

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