From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vitalie Cherpec <vitalie@funlabs.com>
Subject: Re: Gateway Switch script
Date: Thu, 28 Aug 2003 15:49:52 +0300
Sender: linux-admin-owner@vger.kernel.org
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To: Murali Potla <murali.potla@softprosys.com>
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>
>
>Does any body has a script to automatically switch the default gateway
>between two IPs. ?
>I have two ISP connections. I want to switch between them when one is
>down 
>  
>

You can set up your default route to be a multipath route. Then you
could use both connections simultaneously and continue to use the
other one if one is down. There is no need to switch default gateway
with a script. Your kernel will figure out when to stop using the dead
route and how to do NAT.

Check these urls:

    http://lartc.org/howto/lartc.rpdb.multiple-links.html
    http://www.ssi.bg/~ja/#routes
    http://www.ssi.bg/~ja/nano.txt

                    Vitalie