Classic Ethernet Shared Bandwidth LANs
Communication on a classic Ethernet LAN is half–duplex. A classic LAN consists of a set of stations that share a fixed amount of bandwidth. Only one frame can be in transit at any given time.
The first physical medium that was used for Ethernet was thick 50-ohm coaxial cable, as is illustrated in the top half of Figure 4.1. Later, Ethernet LANs were constructed by connecting sets of stations to hubs via twisted-pair or fiber optic cables, as is shown in the bottom half of Figure 4.1.
Figure 4.1. Ethernet stations sharing a medium.
A station sends information to another station by wrapping the information ...
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