Ethernet Most widely used high-speed LANs Ethernet(10Mbps, 100Mbps, 1Gbps 10Gbps) Fibre channel High-speed wireless LANs Ethernet protocol is developed by iEee 802.3 standards committee, consisting of Medium Access Control ( Mac) layer(CSMA/CD protocol) the key part of this chapter Physical Layer Earlier mac schemes ALOHA Slotted aloha CSMA3 Ethernet • Most widely used high-speed LANs — Ethernet (10Mbps, 100Mbps, 1Gbps, 10Gbps) — Fibre channel — High-speed wireless LANs • Ethernet protocol is developed by IEEE 802.3 standards committee, consisting of — Medium Access Control (MAC) Layer (CSMA/CD protocol) • the key part of this chapter — Physical Layer • Earlier MAC schemes: — ALOHA — Slotted ALOHA — CSMA