I have a bit of a baffling issue that perhaps a Cisco professional can assist me with. I work for a bank that has a data center and DR site set up for VM replication across a dedicated 3MBps IPSEC tunnel link with ASA5505 at each endpoint. This tunnel is supposed to be exclusive to a certain range of private IP addresses (within two distinct subnets) to exchange data back and forth across the tunnel (using synchronization and/or replication technologies). These two sites are also supported by frame relay for normal business/production traffic (DR site is also a branch office). Normally we pass traffic across the frame using our internal Cisco 2600 routers and this works fine. However, we have also set up an IPSEC (site to site) tunnel between the firewalls at both sites to exclusively tunnel traffic originating from a specified range in one subnet (10.246.52.140-149) whose destination is within a different subnet (10.246.55.146-148). The local subnets for both of these sites are 10.246.52.0/24 and 10.246.55.0/24.
So here is our problem. We are experiencing some sort of internal routing issue whereby local hosts on the 52.x subnet can contact (ping, rdp, etc) all hosts contained within there local subnet, including those defined as source addresses for the IPSEC tunnel; they can also properly route traffic originating from the source to destination addresses through the tunnel. These are both desirable and working on the 52.x subnet.
However, when we move over to hosts on the 55.x subnet, they cannot contact any IP addresses which are defined as destination hosts routed through the tunnel (in otherwords outside of the frame). Therefore, a local host on the 55.x subnet, say with an IP address of 10.246.55.16 cannot contact a host specified as a destination host tunneled by a static route on the 52.x source router, EVEN THOUGH the 2 hosts attempting to contact each other in testing are essentially on the same local subnet (55.16 ---> 55.148).
Both routers are using EIGRP 1 with redistribute static and redistribute connected to learn its neighbors routes. I have attached the configs of both internal frame routers where I believe the internal routing issue exists. Please keep in mind that the IPSEC tunnel has been verified and tested and does pass traffic correctly routed to it through the tunnel.
PLEASE HELP, any guidance is appreciated.