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Chapter 3: Network Link Technologies > ILLUSTRATED NETWORK CONNECTIONS

ILLUSTRATED NETWORK CONNECTIONS

We will start by using Ethereal (Wireshark), the network protocol analyzer introduced in the last chapter, to investigate the connections between systems on the Illustrated Network. It runs on a variety of platforms, including all three used in the Illustrated Network: FreeBSD Unix, Linux, and Windows XP. Ethereal can display real-time packet interpretations and, if desired, also save traffic to files (with a variety of formats) for later analysis or transfer to another system. Ethereal is most helpful when examining all types of Ethernet links. The Ethernet links are shown as dashed lines in Figure 3.1.

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FIGURE 3.1 Connections used on the Illustrated Network. SONET/SDH links are indicated by heavy lines, Ethernet types by dashed lines, and DSL is shown as a dotted line. The home wireless network is not given a distinctive representation.


  

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