I'm looking for a solution for the following scenerio: Site-A has 2 isp for failover, ISP-1 and ISP-2. Site-A also has a site to site tunnel to remote Site-B on ISP-1. I want to be able to converge the tunnel to ISP-2 when ISP-1 goes down. If possible, how will I be able to do that from Site-B? What kind of equipment would I need?
Thanks in advance.