CSMA/CD

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CSMA/CD

Carrier Sense Multiple Access/Collision Detect. An now-obsolete trafficking protocol used in Ethernet networks, which allowed workstation devices to sense whether the network is free before they transmit data. CSMA/CD was used in shared media Ethernet variants (10BASE5, 10BASE2). Modern Ethernet networks no longer utilize CSMA/CD, but it is still supported for backwards compatibility.
References in periodicals archive ?
However, it is important to note that the 100BaseTX constrains the collision domain distance between two repeaters to 5 meters, and between the repeaters and terminal devices to 100 meters.
Unlike conventional hub products, which share one collision domain among eight ports, the NC-100 dedicates a 10Mbps segment to every desktop with full wire speed switching.
Two new features have been added to CSMA/CD to enable efficient operation over a practical collision domain diameter at 1000 Mb/s.
The Bridge Slide-In-Card may be used as a bridge from the LAN Master workgroup to the backbone network; creating an independent collision domain.
The hub's stackable design, employing Asante's unique expansion card technology, allows companies to easily scale up the network as needed to as many as 14 hubs in a single stack and a maximum capacity of 334 connections in a single collision domain.
It does not effect repeater count -- at each installation point, it creates a new collision domain and broadcasts all traffic, thereby restarting the repeater count and media segment length without the delays of a filtered bridge.
This approach bogged down communication, as users shared the same collision domain and, hence, vied for the same bandwidth.
By linking two stacks it is possible to have 144 ports in one collision domain; however, having that many users in one collision domain may not be wise tactically.
Lengths of the copper segments within the same collision domain (if not given, 100 meters per segment must be assumed); and
At the time of the original network analysis, the city had a flat network with one collision domain.
The collision domain was too large and the broadcast ratio was too high.
Tentatively referred to as EdgeCAR, this added function permits higher scalability in the network by allowing groups of eight ports to share a collision domain, instead of every available port sharing that domain.
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