I've got a Cisco 1900 router which connects to the Internet using a primary and a secondary WAN connection. When the primary connection is up, all traffic use this link. When the primary connection is down, I use the secondary connection to connect to the router to troubleshoot why the primary link is down.
Sometimes I would also like the two connection to be up and running at the same time. I would then like to be able to access the router using SSH on either one of its public IP-addresses.
Is there any (easy) way of having both these interfaces accessible at the same time?