I have 2 sites:
These locations are only 1.5 miles apart and are connected via a point to point T1 as well as a 802.11G wireless bridge for redundancy. The bridge and point to point T1 are routed connections via my 2811 routers that are located in each building. Currently only the south plant has an internet connection via T1 which is protected by an ASA 55xx.
My boss wants me to install a second internet connection and to have it in the north building. He wants each internet connection used and if one would fail the other would take 100% of the load until the other would come back up.
I need the redundancy to be for both inbound and outbound connections. I have several VPN tunnels that I need to be able to fail over automatically. Some of these VPN tunnels are setup via from internal connections, external clients, as well as some site to site links.
I know this is a lot to ask for so I'm actually wanting to present 2 options for him. One that would fullfill everything he wants, and another that will only use the second connection should the primary fail.
Anyone that can provide some guidance on either of these objectives I would greatly appreciate since this is way over my head.