This invention relates to a node device which, in the case of a plurality of different types of networks are connected to one another, is able to relay and transmit a packet from a conventional type (e.g., ethernet) LAN to a FDDI LAN. The node device has a MAC sublayer for supporting the conventional...http://www.google.com/patents/US5031174?utm_source=gb-gplus-sharePatent US5031174 - Node device
