Intelligent filtering algorithms for networked simulators

Data filtering is an important mechanism that can be used to achieve the real-time linkage among geographically distant local area network (LAN) sites. Two approaches for implementing data filtering within simulation networks, namely, filtering at reception and filtering at transmission, are described. Filtering at reception requires all frames to be transmitted onto the network backbone and later filtered by each receiving gateway to select those frames that are pertinent to the nodes served by this gateway. Filtering at transmission requires that frames originated by a node at a local network are filtered at the local gateway and are sent to other gateways only if they carry information relevant to other external nodes