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Date: Wed, 09 Sep 2009 22:31:49 -0700
From: Julian Elischer <julian@elischer.org>
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To: Randy Bush <randy@psg.com>
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Cc: freebsd-net <freebsd-net@FreeBSD.org>
Subject: Re: forwarding when two rip defaults
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Randy Bush wrote:
> say i run routed and receive rip default from two routers, on the same
> local ether.  what is the forwarding?  i presume it's not smart enough
> to balance flows.  i hope not alternating packets.  clue, please?
> 
> fwiw, the routers each have full bgp exits.  vrrp would force all
> traffic to one.  so i am looking at rip or quagga's isisd.
> 
> thanks.
> 
> randy
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I can't speak for routed but the base system, given two default routes 
would use a hashing schemem to send data to both.

more details depend on what options you have turned on.