Secondary default gateway?

teamchachi · 10-07-2005, 10:51 AM

Here's the situation: The school where I'm volunteering has 3 subnets. We put in a Linux server with 3 NICs to route traffic between the subnets. This works great! Until, the Linux server crashes.

Here's my question: Is there some way that I can put in a secondary router that will take over the subnet routing duties if router #1 dies? Is it possible to tell the Windows clients to use default gateway #1, and if that doesn't work then use default gateway #2?

Thanks!

EECore · 10-07-2005, 11:06 AM

Although an extremely dodgy way of doing things, my idea would be to set up a script run from router #2s Cron which pings router #1 every 5 minutes or so, and if it doesn't get a response to change its IP address and enable the services to match that of router #1s...

If that made any sense..

I'm sure there is a much better way of doing things though.

teamchachi · 10-07-2005, 12:19 PM

Here's a bit more information:

On the Linux router:
eth0 - 192.168.10.1
eth1 - 192.168.20.1
eth2 - 192.168.30.1

Example:
A windows pc with IP of 192.168.10.99 using 192.168.10.1 as his default gateway.

What I'd really like to do is setup a second Linux router with the following setup:
eth0 192.168.10.2
eth1 192.168.20.2
eth2 192.168.30.2

So is there some way that you can tell Windows to try 192.168.10.1 as the default gateway, and if that doesn't work to 192.168.10.2?