Multilink FreeBSD to FreeBSD with mpd over Cable and DSL

From: Aaron Burke (aburke_at_nullplusone.com)
Date: 01/30/04

  • Next message: Bob Van Valzah: "PIM IPv4 user-level process" 
    To: <freebsd-net@freebsd.org>
Date: Fri, 30 Jan 2004 06:08:38 -0800

    Hello FreeBSD-net,

    I am trying to figure out the best way to link two FreeBSD boxes
    together using two seperate internet connections at the same time
    per host. Both FreeBSD boxen have both Cable and DSL connections.
    I am looking for a way to link them together using both connections.

    Cable and DSL seem to have about 98% uptime in my area, and I am
    in a situation, where I can not live without a broadband connection
    between the two sites.

    I intend on creating a multilink connection between the two FreeBSD
    boxen using mpd. It is my understanding that mpd will detect that
    one of the links has gone down and stop using it. (I am assuming that
    it occationally checks the link to see if it has gone back up)

    I basically have the following situation (fake IP addresses). Alpha
    and DG are Host names.
    Alpha: (Cable) 12.5.3.103 (1500K/256K)
    Alpha: (DSL) 14.2.1.7 (768K/128K)
    DG: (Cable) 17.3.2.202 (1500K/256K)
    DG: (DSL) 17.24.12.83 (768K/128K)

    I would like to create a link from Cable to Cable, and DSL to DSL.
    The speeds on cable are about twice the speed, so I am also
    interested in mpd's ability to divert more traffic out that link,
    and receive more traffic from that link.

    I am planning on sending a private address over the links, having
    192.168.50.100 on Alpha, and 192.168.50.101 on DG.

    (example):
    192.168.50.100 <-- MPD1 <Cable to Cable> MPD1 --> 192.168.50.101
                   <-- MPD2 <DSL to DSL> MPD2 -->

    I have done some research into mpd, and it appears to do exactly what
    I want, but I am looking for a way of configuring the mpd.

    The problem is that the sample configs of mpd dont seem to describe
    this situation. Can anyone direct me to a site with a similar setup?

    Am I mistaken about mpd?

    Thanks for your time
    Aaron Burke
    aburke@nullplusone.com

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