Chapter 6. Network Interface: Service Models
This chapter discusses the endnode's view of the network and talks about various types of service models: connectionless versus connection-oriented, reliable versus datagram, classes of service, and various combinations.
What Is the Network Layer?
A network is made up of a bunch of packet switches connected through various types of technology such as point-to-point links or LANs. I'll call a packet switch a router, although other names are in use, including
Intermediate system, or IS (used by ISO)
Gateway (sometimes used by the IP community)
Switch, or layer 3 switch
The purpose of a network is to enable users who attach their equipment to the network to transmit data to and receive data from other users' ...
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