A network segment is a portion of a computer network wherein every device communicates using the same physical layer. Devices that extend the physical layer, such as repeaters or hubs, are also considered to extend the segment. However, devices that operate at the data link layer level or higher create new physical layers and thus create rather than extend segments. Computer networks redirects here. ... This article or section does not adequately cite its references or sources. ... An Icom Radio Repeater. ... Hub may refer to the following: Look up Hub on Wiktionary, the free dictionary The center of a wheel. ... The data link layer is layer two of the seven-layer OSI model as well as of the five-layer TCP/IP reference model. ...

Ethernet segments

In the context of Ethernet networking, the network segment is also known as the collision domain. This comprises the group of devices that are connected to the same bus, and that can make CSMA/CD collisions with each other, and sniff their packets in promiscuous mode. It also includes devices connected to the same hub, which also can have collisions with each other. Ethernet is a large, diverse family of frame-based computer networking technologies that operates at many speeds for local area networks (LANs). ... A collision domain is a logical network segment where data packets can collide with one another for being sent on a shared medium, in particular in the Ethernet networking protocol. ... In computer networking, Carrier Sense Multiple Access With Collision Detection (CSMA/CD) is a network control protocol in which (a) a carrier sensing scheme is used and (b) a transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam signal, and then...

In modern switch-based Ethernet configurations, the physical layer is generally kept as small as possible to avoid the possibility of collisions. Thus, each segment is only composed of two devices, and the segments are linked together using switches and routers to form one or more broadcast domains. The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... A broadcast domain is a logical network segment in which any computer or other device connected to the network can directly transmit to any other in the domain without having to go through a routing device, provided that they share the same subnet and gateway address and are in the...

Token ring segments

Computers connected to the same Media Access Unit A Media Access Unit (MAU, also called Multistation Access Unit, MSAU) is a device to attach multiple network stations in a star topology in a Token Ring network, internally wired to connect the stations into a logical ring. ...

Token bus segments

Computers connected to the same token bus. Token bus is token ring over a virtual ring on a coaxial cable. ...

Other uses of the term 'segment'

The term network segment is sometimes used to refer to the portion of a computer network in which computers can access each other using a data link layer protocol (e.g., in Ethernet, this would be the ability to send a Ethernet packet to others using their MAC addresses). In this case, it is synonymous with broadcast domain. Computer networks redirects here. ... The data link layer is layer two of the seven-layer OSI model as well as of the five-layer TCP/IP reference model. ... A broadcast domain is a logical network segment in which any computer or other device connected to the network can directly transmit to any other in the domain without having to go through a routing device, provided that they share the same subnet and gateway address and are in the...

Occasionally, the term refers to a subnetwork. A graphic representation of relationships and source of the various variables representing a chunk of C subnets In computer networks, a subnetwork or subnet is a range of logical addresses within the address space that is assigned to an organization. ...

References

• http://www.inetdaemon.com/tutorials/lan/define_network_segment.shtml