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Analysis of the server and connection based approaches to connectionless service for ATM networks


Two major approaches for providing connectionless service for ATM networks are connection based and server based. In the connection based approach, the connection oriented service of ATM is used to interconnected pairs of ATM end systems. The end systems are then responsible for providing a connectionless service to various other end systems via ATM connections. In the server based approach, connectionless servers in the ATM networks directly provide a connectionless service. An end system may send all its packets to one connectionless server where each packet is individually routed to other connectionless servers en route to the destination. This paper examines analytically the resource requirements for these two approaches. Specifically, it finds the number of ATM connections, connection set-up rate and required number of connectionless servers.

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