Chapter 4. The Classical Ethernet CSMA/CD MAC Protocol
The Ethernet media access control (MAC) protocol is extremely resilient. It has been adapted to a wide range of speeds, media, and changing LAN topologies. The current version of the 802.3 standard (defined in the 1998 edition) can operate at 1Mbps, 10Mbps, 100Mbps, and 1000Mbps.
Note
The 1Mbps StarLAN version of Ethernet introduced in the early 1980s no longer is used and certainly does not qualify as a high-speed LAN technology. It will not be discussed further in this book.
Ethernet media include various grades of coaxial cable, twisted-pair wire, and optical fiber. On twisted-pair or optical fiber, an Ethernet station connected to a switch can operate in full-duplex mode, doubling ...
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