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MMT1-Lec5 - Computer Networks 1(Mng My Tnh 1 Lectured by...

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Computer Networks 1 (M ng Máy Tính 1) Lectured by: Nguy n Đứ c Thái
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Lecture 5: Network Layer Reference : Chapter 5 - “ Computer Networks ”, Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003.
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3 Contents The network layer design issues Routing algorithms Congestion control algorithms Quality of services Internetworking The network layer in the Internet
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4 Network Layer Design Issues Store-and-Forward Packet Switching Services Provided to the Transport Layer Implementation of Connectionless Service Implementation of Connection-Oriented Service Comparison of Virtual-Circuit and Datagram Subnets
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5 Store-and-Forward Packet Switching – Router The environment of the network layer protocols.
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6 Services Provided to the Transport Layer Network layer provides services to the transport layer Goals of network layer services Independent of router technology The transport layer should be shielded from the number, type and topology of routers Network addresses available to the transport layer should be uniformed and even across LANs and WANs
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7 Two Classes of Services in the Network Layer Connection less service Packets are called datagrams The subnet is called a datagram subnet
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