Date: Mon, 18 Feb 2008 16:36:18 -0500 From: Bill Moran <wmoran@collaborativefusion.com> To: Nick Barnes <Nick.Barnes@pobox.com> Cc: freebsd-net@freebsd.org Subject: Re: Multiple default routes on multihome host Message-ID: <20080218163618.5e6672d3.wmoran@collaborativefusion.com> In-Reply-To: <38308.1203368454@thrush.ravenbrook.com> References: <38308.1203368454@thrush.ravenbrook.com>
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In response to Nick Barnes <Nick.Barnes@pobox.com>: > I have a multi-home host: more than one IP address. The addresses are > in separate subnets but run over the same ethernet segment (this is a > temporary situation while I switch an office network over from one > network provider to another). > > I want packets from address A1 to be sent via gateway G1, but packets > from address A2 to be sent via gateway G2. > > How do I do this? Can I just have more than one default route? I'm > remote from the machine in question, so I don't want to tinker with > the default route until I'm sure of the answer. You can't have multiple default routes. The fact that you want to is an indicator of incorrect network design, although it could be an artifact of the interim setup while you migrate things around. I would suggest you ask yourself (and possibly the list) _why_ you think multiple default routes is necessary ... what is it that you're hoping to accomplish. I'm guessing your looking for some sort of redundancy, in which case something like CARP or RIP is liable to be the correct solution. -- Bill Moran Collaborative Fusion Inc. http://people.collaborativefusion.com/~wmoran/ wmoran@collaborativefusion.com Phone: 412-422-3463x4023
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