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IP Routing Protocols by Uyless Black

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PRINCIPAL ADDRESSES USED IN INTERNET AND INTRANETS

Communications between users through a data network requires several forms of addressing. Typically, two addresses are required: (a) a physical address, also called a data link address, or a media access control (MAC) address on a LAN, and (b) a network address. Other identifiers are needed for unambiguous end-to-end communications between two users, such as upper layer names and/or port addresses.

Each device (such as a computer or workstation) on a communications link or network is identified with a physical address. This address is also called the hardware address. Many manufacturers place the physical address on a logic board within the device or in an interface unit connected directly to ...

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