I am investigating how to configure the network detailed below. I am aware that some manual scripting may be required. All of the hosts are using openswan.<br><br>A--------B-------D<br>A--------C-------D<br><br>There are four hosts. The tunnels are detailed with the lines above. The objective is to permit A to communicate with D through B or C. A needs to route to D in the morning via B and in the afternoon via C. This is the part where I assume some manual scripting may be required. I can do that part, I just need to learn what needs to be done. The private IP for D should be the same for A independent of the tunnel (B,C) selected.<br>
<br>I have been testing some configurations so far that do not accomplish every aspect of my objective. The area where I need specific assistance most seems to be in handling the overlapping subnets that I am creating to route traffic to D. For instance, from A's perspective, both B and C have subnets of <a href="http://10.1.0.0/24">10.1.0.0/24</a> so that A can route to D (10.1.0.0.100) through either host.<br>
<br>When the switchover from one tunnel to another occurs, I need to ensure that no data is lost and traffic continues uninterrupted.<br><br>I am happy to provide more detail if required.<br>