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Multiple Default gateways

By sleggitt ·
I have 2 different networks i need to route to
One is for our IS software and it routes over one router and now we added a dsl line and another router i caint make our XP machines route to more then one default gatewat so how do i route to the internet and to the other network for our software

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by ChrisDent In reply to Multiple Default gateways

Default Gateway is defined as the Route to 0.0.0.0 0.0.0.0, which is basically "everywhere else".

This is an example of a network with 2 routers, 2 subnets and access to the internet.

Main Network:

Router on address 10.0.0.254
All PCs on this network use IP addressing in the range 10.0.0.0/24 (10.0.0.1 - 10.0.0.254).
All PCs on this network use the Default Gateway 10.0.0.254

Second Network:

Router on 10.0.1.254 - Also has an external interface address of 10.0.0.253.
All PCs on this network use IP addressing in the range 10.0.1.0/24 (10.0.1.1 - 10.0.1.254).
All PCs on this network use the Default Gateway 10.0.1.254.

Routes:

On the Main Internet Router the following routes are present:

<destination> <mask> <gateway>
0.0.0.0 0.0.0.0 ISP Provided
10.0.1.0 255.255.255.0 10.0.0.253

On the Internal Router the following routes are present:

<destination> <mask> <gateway>
0.0.0.0 0.0.0.0 10.0.0.254
10.0.0.0 255.255.255.0 10.0.0.254

Chances are you'll have to add a static route for the second network.

Remember that while this covers the IP side of the network it doesn't cover naming, but presumably you have a DNS there.

Hope that all makes sense.

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by carlos.nino In reply to Multiple Default gateways
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