(
TRansparent
Interconnection of
Lots of
Links) A network layer 2 protocol that functions like a layer 3 protocol and is sometimes called "routable Ethernet." It was designed to overcome the deficiencies of the spanning tree protocol (STP), which limits traffic to one path in the network and blocks the rest.
Routing Bridges (RBridges)
TRILL uses the IS-IS link state routing protocol implemented in a routing bridge (RBridge). Operating like a bridge and router, RBridges support multiple paths and are compatible with regular bridges. See
spanning tree protocol,
IS-IS and
bridge router.