On corporate and university campuses, a local area network (LAN) is typically used to connect an end system to the edge router. Though, there are many types of LAN technologies, Ethernet is by far the most widespread access technology in corporate and university networks. As shown in the following figure, Ethernet users use twisted-pair copper wire to connect to an Ethernet switch, a technology discussed in detail in "The Link Layer and Local Area Networks". With Ethernet access, users normally have 100 Mbps access, whereas servers may can have 1 Gbps or even 10 Gbps access.

Ethernet Intenet access


lan, end system, router

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