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Old 03-10-2005, 02:55 AM   #1
LQ Newbie
Registered: Aug 2003
Posts: 6

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Gateway shift Script

Hi all
I need help.
I have 1 Linux box with 2 IPs bind on single interface.
suppose ips are and
Default Gateway is
so if gateway goes down i shift default gateway to
Now i need a script that sence that if gateway down (not reply after 2 min then it will automatically shift to

so plz help me out.
Is anyone have any idea how to do that.

THnaks In AdVance
Old 03-10-2005, 05:11 AM   #2
Registered: Oct 2004
Posts: 42

Rep: Reputation: 15
Linux Advanced Router gives you the option to create multiple routing tables. You need to compile it into your kernel (if it's not yet compiled). You can then create two routing tables and each will have different gateway. Multiple gateways are usually used to load-balance between both connections, but they can be used also in your case. Google a little and you will find appropriate script.


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