I currently have a working metro ethernet connection between our main office and a branch office.  I am tasked with building a redundant route for this site, in case the metro-E line goes down.  We are purchasing two cable internet lines at each sigh...

"You can configure multiple IKE policies on each peer participating in IPsec. When the IKE negotiation begins, it tries to find a common policy configured on both peers, starting with the highest priority policies as specified on the remote peer."htt...