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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.
A broadcast domain is a restricted area in which information can be transmitted for all devices in the domain to receive. More specifically, Ethernet LANs are broadcast domains. Any devices attached to the LAN can transmit frames to any other device because the medium is a shared transmission system. Frames are normally addressed to a specific destination device on the network. While all devices detect the frame transmission on the network, only the device to which the frame is addressed actually receives it. A special broadcast address consisting of all 1s is used to send frames to all devices on the network.
Note that virtual LAN (VLAN) technology can create "virtual" broadcast domains. A network built with switching devices can treat each workstation as an independent entity and groups of these workstations can be joined into a virtual broadcast domain, no matter where they are attached to the physical network. For more information, see "Switching and Switched Networks" and "VLAN (Virtual LAN)."
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.