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NBMA (Nonbroadcast Multiple Access)
Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.
An NBMA network is the opposite of a broadcast network. On a broadcast network, multiple computers and devices are attached to a shared network cable or other medium. When one computer transmits frames, all nodes on the network "listen" to the frames, but only the node to which the frames are addressed actually receives the frames. Thus, the frames are broadcast.
A nonbroadcast multiple access network is a network to which multiple computers and devices are attached, but data is transmitted directly from one computer to another over a virtual circuit or across a switching fabric. The most common examples of nonbroadcast network media include ATM (Asynchronous Transfer Mode), frame relay, and X.25.
NHRP (Next Hop Resolution Protocol) is used to determine the NBMA subnetwork addresses of the "NBMA next hop" toward a public internetworking layer address.
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.