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Cisco 1700 Config Help: two ISP connect

 
 
Kevin Hill
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      08-30-2004
I have a cisco 1700 with an Enet card and a T1 card.

I have the E0 on Cox Cable.
I have the S0 on a T1.

F0 - is my local network.

Right now - I have it setup with NAT - however, once it locks onto one
of the IP's for the above connects, EVERYTHING NAT's to that external
IP.

How can I run a config so that NAT works, but it does NAT based on the
IP of the interface that it's going through?

Okay - another way to ask this:

What I want is this:

I want various IP's to only go through the T1. All others to default
through the Cable modem. Ideally- when one or the other is down, it
would fail over to the other one by default.

The problem I am running into is that both sides will only route
specific IP's back to me. So, if the T1 IP goes out through the cable
connection, their routers kill it (as they should). and vice versa.

Hence my hope that I can get NAT working that is based on the
interface IP, and not just the first IP it translated for. Or, the
source IP.

Thank you
 
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Kevin Hill
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      08-30-2004
Solved it.


(Kevin Hill) wrote in message news:<. com>...
> I have a cisco 1700 with an Enet card and a T1 card.
>
> I have the E0 on Cox Cable.
> I have the S0 on a T1.
>
> F0 - is my local network.
>
> Right now - I have it setup with NAT - however, once it locks onto one
> of the IP's for the above connects, EVERYTHING NAT's to that external
> IP.
>
> How can I run a config so that NAT works, but it does NAT based on the
> IP of the interface that it's going through?
>
> Okay - another way to ask this:
>
> What I want is this:
>
> I want various IP's to only go through the T1. All others to default
> through the Cable modem. Ideally- when one or the other is down, it
> would fail over to the other one by default.
>
> The problem I am running into is that both sides will only route
> specific IP's back to me. So, if the T1 IP goes out through the cable
> connection, their routers kill it (as they should). and vice versa.
>
> Hence my hope that I can get NAT working that is based on the
> interface IP, and not just the first IP it translated for. Or, the
> source IP.
>
> Thank you

 
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