Chapter Summary
The key points covered in this chapter are as follows.
- IP is a connectionless protocol in the TCP/IP suite that is used to carry information generated by several other protocols in units called datagrams.
- The primary functions of IP are data encapsulation, packet addressing, packet routing, datagram fragmentation, and transport layer protocol identification.
- IP has its own addressing system that it uses to identify networks and the hosts on those networks.
- IP routes packets by repackaging them to use different data-link layer frames.
- When data-link layer protocols have different maximum transfer units (MTUs), IP can split datagrams into smaller fragments to facilitate transmission.
- IPX is the NetWare equivalent to IP.
- To identify systems, IPX uses the hardware addresses coded into network interface adapters.
- To identify networks, IPX uses network addresses assigned during the NetWare installation.
- IPX uses socket numbers to identify the processes that generate datagrams.
- NetBEUI is a network layer protocol used by small Windows networks for LAN networking services.
- NetBEUI differs from IP and IPX primarily in that it has no network identifiers and is therefore not routable.
- The NetBEUI frame provides transport services for four protocols: the Name Management Protocol (NMP), the Session Management Protocol (SMP), the User Datagram Protocol (UDP), and the Diagnostic and Monitoring Protocol (DMP).