Hierarchical Multicast Address Management and Connection Control
分层自治的Multicast地址管理和连接控制

Multicast capability at the network layer is necessary in order to reduce the bandwidth requirements of multiparty, multicast applications. Integral to such a capability are multicast address management and multicast routing mechanisms. Multicast address management and connection control are two essential components needing to be solved in the Multipoint applications. Based on hierarchical autonomous structure in accordance with the self-organization topologies of INTERNET, this paper puts forward a multicast address management scheme which sets up the hierarchical partition, which is dynamic, of Multicast address space in order to reduce the blocking probability. Only MAM (multicast address management) in the bottom-layer domain may allocate directly the addresses to multipoint session so that the session acquire the address more rapidly in average. And, a connection control hierarchy (CCH) based on master/slave relationship and a simple efficient building algorithm of multi-point connection are also advanced. The paper also describes the normal operations of multicast address management and multi-point connections controller. With simulation experiment, three of multicast address allocation modes, hierarchical autonomous mode (HAM), central mode (CM) and network-divided mode (NDM) (Eleftheriadis proposed), are compared. The result shows that hierarchical autonomous mode integrates the merits of central mode and network-divided mode, owns high efficiency in the whole. Connection control hierarchy also is efficient in the connection control. They are shown to be highly robust, flexible and scalable.