Cisco ASA Routing Question (MPLS Failover and Anyconnect VPN)
Posted on 2010-09-16
I have a question about ASA routing as it relates to MPLS Failover to IPSEC and Anyconnect VPN clients. here is a basic diagram of an office:
Workstation -> Core SW (Layer 3) -> MPLS Router (Cisco 2800) -> ASA (ASA5510 or 5505) -> Cloud.
Workstations have a GW of the Core, Core has a GW of the MPLS Router, MPLS Router uses BGP for the cloud subnets then has a gaetway of last resort of the ASA.
All of this works fine in production until we with to have a failover of the MPLS connections to IPSEC tunnels via the ASA. The root cause of the issue is that in the ASA we currently have static routes for the MPLS subnets which point to the MPLS Router. In the event that the MPLS goes down we cannot get onto the VPN as these routes are causing a loop. Removing the static routes from each side allows for the VPN to failover properly at the expense of Anyconnect connectivity.
My question is how can we implement an alternate form of routing to avoid this issue?