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From: Ernie Elu <ernie@spooky.eis.net.au>
Message-Id: <199709150836.SAA02016@spooky.eis.net.au>
Subject: Different routes for each protocol
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Date: Mon, 15 Sep 1997 18:36:06 +1000 (EST)
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I am curious if it is at all possbile to route indiviual protocols via
different default routes or interfaces.

For example say I have  FreeBSD box and two different Internet providers
that I connected to one with a much faster link than the other eg. T1 and
a 64k ISDN each off their own router or interface. The slower link offers 
a monthly flat rate ans the T1 charges per megabyte so I want to load up the
flat rate link as much as possible. 


Can I route all my none time critical protocols like NNTP and SMTP via the
slower ISDN link?

I can statically route my NNTP as I only feed from from one news server, but
I can't figure out how to do it for SMPT or any other individual protocol.

One idea I had was to give each protocol it's own IP address via an alias.

eg. smtp.your.domain.com aaa.bbb.ccc.001
    pop.your.domain.com  aaa.bbb.ccc.002

But that only takes care of inbound traffic, outbound will still go via
the default route.


Any suggestions?   


- Ernie.