Date: Mon, 13 Aug 2007 17:59:52 -0600 From: Modulok <modulok@gmail.com> To: freebsd-questions@freebsd.org Subject: Redundant network router setup? Message-ID: <64c038660708131659m68620db9of8d93bd079d1fb29@mail.gmail.com>
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QUESTION: Is there a way to setup a redundant router, such that I can offload traffic from the primary router to another machine, without breaking TCP sessions? BACKGROUND: I have a FreeBSD machine acting as a gateway, running natd(8) through ipfw(8). When maintenance time comes, the server is taken offline, causing every client who was dependent on it connectionless until I'm done monkeying around. I could hook up another server with an identical configuration and then just jack the cable from one machine to the other. This disconnects all clients momentarily, until they re-initiate their TCP connections. If we excuse it as a "computer glitch" no one gets too angry. Needless to say, there must be a better solution for high availability. Maybe this happens at the switch level? I don't know. Looking for pointers on how to set something like this up. Pointers, Ideas? -Modulok-
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