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A Protocol for Packet Network Intercommunication

A Protocol for Packet Network Intercommunication. Wei Zhang (wez5@lehigh.edu). Introduction. Why interconnect? Facilitate the sharing of computer resources. Difficulty in intercommunication Each network may have distinct addressing scheme.

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A Protocol for Packet Network Intercommunication

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  1. A Protocol for Packet Network Intercommunication Wei Zhang (wez5@lehigh.edu)

  2. Introduction • Why interconnect? • Facilitate the sharing of computer resources. • Difficulty in intercommunication • Each network may have distinct addressing scheme. • Each network may accept data of different maximum size. • The success or failure of a transmission • Recovery from the communication disruption

  3. An important concept • GATEWAY • It is an interface between networks and plays a central role. • It routes the data in a store and forward fashion. So it works like an interpreter. • It is critical for the implementation of the intercommunication. Network 1 Network 2 GATEWAY

  4. Solutions from the paper • Address Formats • Segmentation and Reassembly • Due to the different MTU in each network. • Retransmission and Duplicate Detection • Guarantee the correctness of the transmission. Network (8 bits) TCP Identifier (16 bits)

  5. Solutions from the paper • Flow Control • Avoid overwhelming the recipients. • Connections and Associations • Unlike circuit switching network, there’s not a fixed path between two hosts. The path may vary, depending on the networking environment.

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