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Open Access Publications from the University of California

The internetworking of connectionless data networks over public ATM : connectionless server design and performance

  • Author(s): Hong, Duke P.;
  • Vickers, Brett J.;
  • Suda, Tatsuya;
  • Oliveira, Carlos
  • et al.

The transport of connectionless data is necessary for the compatibility of emerging wide area ATM networks with existing computer networks. This paper investigates the design and performance of a virtual connectionless network overlayed on top of cell-based connection-oriented ATM networks. The virtual connectionless network is made possible by utilizing connectionless servers. Two packet forwarding techniques used by connectionless servers are examined. Forwarding connectionless packets in a cell-by-cell manner (streaming mode) is shown to result in lower packet loss and end-to-end delay than packet-by-packet forwarding of connectionless data (reassembly mode). A design and implementation are presented for a streaming mode connectionless server capable of a maximum throughput of 100 Mbps.

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