Here's the problem.. We have a site-to-site VPN connection with our parent company's network in England. Over the past weekend, we changed our internal IP address scheme from a 192.168.0.0 /24 to a 10.10.0.0 /23 network to accommodate an influx of new employees and to prevent conflicts with our internal default router and the default router of our VPN clients. In doing so, we picked an IP range that was already in use by our counterparts in England. They have another remote site that uses the 10.10.0.0 network as well, which creates a conflict when we attempt to connect our site-to-site VPN. Is there any way to create static routes so that our England counterparts sees our network as a 192.168.x.x?
Here's how traffic flows at our site:
12.xxx.xxx.8(External IP address of our PIX firewall) -> 10.1.2.2(Internal IP address of our PIX) -> 10.1.2.1(External IP address of our Cisco 2811 Router) -> 10.10.0.1(Internal IP address of our Cisco 2811 Router, which is the default route of our network)