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A Network Architecture for ATM-Based Connectionless Data Services
Masafumi KATOH Haruo MUKAI Takeshi KAWASAKI Toshio SOUMIYA Kazuo HAJIKANO Koso MURAKAMI
IEICE TRANSACTIONS on Communications
Publication Date: 1993/03/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Broadband ISDN --Application, Networking and Management--)
ATM networks, connectionless data communication, multicast, inter-LAN communication,
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A high-speed data communication service such as inter-LAN is one of many services possible with ATM-based B-ISDN. Design objectives were to simplify the connection setup procedure, to ensure efficient utilization of network capacity, and to reduce delay in servers. These objectives were met in a B-ISDN service trial system featuring distributed connectionless servers connected by permanent virtual channels and cell-by-cell processing in the connectionless server. The system's eight connectionless servers accommodate up to 256 subscriber network interfaces. The authors discuss how multicast can be provided in ATM-based connectionless data networks for inter-LAN communications. Four possible configurations, distinguished by copy function (multicast/broadcast) and on functional arrangement in the inter-connectionless server network (centralized/distributed), are presented. The configurations are compared from perspectives of required hardware and network capacity. The distributed broadcast function is shown the most reasonable solution.