I'm designing and configuring a new network and I would like to connect one router with two interfaces to the same spanning tree domain (a couple of switches). A third interface is going to another subnet.
I would like to have the two interfaces to be redundant and provide subsecond failover. So a BVI with spanning tree on the router is not really an option.
Is it possible to configure redundant interface pairs like ASA 8.0 on a router? Or is there another way to accomplish this?