A bridge connected to an FDDI network preprocesses messages each comprising source address (SA), destination address (DA) and data, using a data base of SA's maintained in a content addressable memory (CAM). A finite state machine working with the other elements of the FDDI bridge acts as an intelligent...http://www.google.com/patents/US5481540?utm_source=gb-gplus-sharePatent US5481540 - FDDI bridge frame learning and filtering apparatus and method
