A data communications network in which multiple host processors are linked in a ring network by respective network interface processors or nodes includes circuitry in each of the nodes which aids in the implementation of a distributed resource locking scheme and a reliable multicasting system. The circuitry...http://www.google.es/patents/US5243596?utm_source=gb-gplus-sharePatente US5243596 - Network architecture suitable for multicasting and resource locking
Network architecture suitable for multicasting and resource locking