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Bronze

PIX to PIX VPN tunnel between two lans with same subnet

Hello ,

I had a question about the following setup.

10.10.10.x----PIX1----router------router-----PIX2------10.10.10.x

In the the above setup is it possible to set up a VPN tunnel between the two PIXs .If so can you please tell me how.Is there any documentation in the cisco site that says the VPN tunnel between two lans with same subets.

I know how I can do with diff subnets.

Please advise.

2 REPLIES
Cisco Employee

Re: PIX to PIX VPN tunnel between two lans with same subnet

This will not work. Since the remote subnet is the same as the local subnet, the traffic for the remote network would not be forwarded through the tunnel, as it is supposed to be local.

Here is a tip in CCO in case there is a really desperate need for such a situation, but is only recommended as a temporary measure. You would then require two routers on either pixes inside to do some sort of natting for the identical subnets.

http://www.cisco.com/warp/customer/707/same-ip.html

Regards

Bronze

Re: PIX to PIX VPN tunnel between two lans with same subnet

Hello,

I have found a document on cisco site for the PIX.

http://www.cisco.com/warp/customer/707/vpn_pix_private.html.

I think we can do if we change the IP of the LAN using static statements.

Thanks.

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