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Chapter 14. Local Area Networks: Ethernet. Figure 14.1 Three generations of Ethernet. 14.1 Traditional Ethernet. MAC Sublayer. Physical Layer. Physical Layer Implementation. Bridged Ethernet. Switched Ethernet. Full-Duplex Ethernet. Figure 14.2 802.3 MAC frame.
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Chapter 14 Local Area Networks:Ethernet
14.1 Traditional Ethernet MAC Sublayer Physical Layer Physical Layer Implementation Bridged Ethernet Switched Ethernet Full-Duplex Ethernet
Figure 14.2802.3 MAC frame Packet (PDU) from the network layer. Additional addressing (DSAP/SSAP or destination/source Service Access Point; software addresses) is provided by the LLC to supplement the addressing provided by the MAC. A workstation in the LAN has a single MAC (physical) address. A any given time, a workstation might simultaneously handle several data exchanges originating from different upper-layer protocols (e.g., IP, Novell IPX, SNA) but operating over this same physical connection. The SAPs specify in which memory buffer the NIC places the frame contents, thus allowing the appropriate higher-layer protocol to retrieve the data. For more information refer to “Communication Networks” by Garcia and Widjaja.
Figure 14.10Categories of traditional Ethernet Thicknet; thick coaxial cable Thinnet; thin coaxial cable Twisted pair Fiber link
Figure 14.11Connection of a station to the medium using 10Base5
Figure 14.12Connection of stations to the medium using 10Base2
Figure 14.13Connection of stations to the medium using 10Base-T Simulate a shared cable; logically bus, physically star
Figure 14.14Connection of stations to the medium using 10Base-FL
Figure 14.17Collision domains in a non-bridged and bridged network
Figure 14.18Switched Ethernet N domains.
Figure 14.19Full-duplex switched Ethernet Using two links to achieve full-duplex
14.2 Fast Ethernet MAC Sublayer Physical Layer Physical Layer Implementation
14.3 Gigabit Ethernet MAC Sublayer Physical Layer Physical Layer Implementation
