Hello,
I inherited a network with two Cisco ASA 5540's, one connected to the primary ISP and the other connected to the backup ISP. Each ASA has a connection to three switches on the three remaining interfaces. See the diagram below for more details.
As I found out yesterday when our primary circuit went down, the manual failover procedure that the previous admin implemented does not work. I believe he set it up using OSPF, but I am not that familiar with it and I was not able to get it to work properly. I am looking to resolve this and implement failover in a simpler matter, but I'm not quite a network expert and I don't know where to start. Do I want Active/Active, Active/Standby, or is there another method to set this up?
Our ISPs don't support BGP, which is fine IMO. In the event of a failover, I don't mind having to change DNS records for in-bound stuff. I just want a way to be able to easily failover to the backup ISP. Anyone have any suggestions of where to start with this? Thanks
