routing trickery

[Doug White <dwhite@xxxxxxxxxxxxxxxxxx>]

Here's a challenge for ya...

We have a 2.2.6 FreeBSD box serving as a small router.  The machine is
connected to two providers and a handful of local networks.  The default
route is set up to route all the traffic to one of the two providers, the
other being a backup.

Being the gracious people we are, we're taking some bandwidth over from
another company.  We'd like to plug those links into this router and send
that data out to the second provider.  In essence, chop the router in
half.

The question:  Can you do this, and how?  

The obvious way is to upgrade to -CURRENT and use ipfw's 'fwd' rule to
forward all packets from the company's interface to the second provider.
However, that means upgrading a critical piece of equipment to -CURRENT,
and we'd like to avoid that.  Another possibility is to use some of the
wierd routing features of ipfilter, but I"m not sure how to set that up or
even if ipfilter works under that version of the OS.

I'd be interested in hearing of any other solutions peopole have used.

Thanks for any help...

Doug White                               
Internet:  dwhite@xxxxxxxxxxxxxxxxxx    | FreeBSD: The Power to Serve
http://gladstone.uoregon.edu/~dwhite    | www.freebsd.org


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