2811 + 2 DSL + NAT with Load sharing ?

Answered Question
Dec 3rd, 2007


I have searched these forums, and the cisco site, but cant seem to find a suitable solution to my situation, which I believe is very common.

I am using a 2811 with a DSL HWIC, and using NAT.

Now I want to attach another DSL line, but also want to dynamically load balance between the 2 ISP's so that my LAN users can get higher speeds.

Multilink PPP is not an option (as I have 2 ISP's).

I know that policy based routing can help me a bit, but I cant seem to figure out how this would affect NATing.

Any pointers would be appriciated.


I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 8 years 10 months ago


this is your configuration example:


you can omit the tracking part if your Layer1 / layer2 interface status is reliable, and just add a 2nd default route.

Hope this helps, please rate post if it does!

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Overall Rating: 5 (1 ratings)


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