Hello, Hopefully someone else has done this before or has some info on how it can be implemented. In a nutshell I have a fairly large WAN setup with fiber and T1's to remote sites all using OSPF routing protocol. The main site has an ASA 5520 with a 5mb pipe to the internet via a switch. The ISP is also going to drop a second Internet connection to one of the other locations (which we are making into a backup data center) The ISP is also going to provide failover using BGP. So the IP Addresses at both sites will be the same. I was hoping to be able to use a second ASA and supply a backup internet connection for the main site.
Internet Internet | | ASA ASA | | LAN--------router---fiber---router--------LAN ospf
My problem is the ASA will never show the internet down as OSPF is link state specific and even if the internet is down the ASA would still be connected to the internet switch and live. So I figured I can setup route tracking on the ASA but all the documentation shows using the backup ISP that is connected to a second interface on the ASA. I need the networks Default gateway to be the ASA on the other network that is connected via Fiber.
Is what I am looking for possible with the ASA or am I just spinning my wheels.
Thanks in advance for any information anyone may provide. As always its appreciated.