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 ?
or collision domain. This progression helps to resolve the problem that switch configurations encounter in legacy shared-media LAN environments.
This approach bogged down communication, as users shared the same collision domain and, hence, vied for the same bandwidth.
In a shared-media environment, multiple source collision domains communicating with the same destination or one source collision domain communicating with many destinations--negates the entire switching advantage, because of the way switching works.
It functions by abstracting security policies away from hardware terms, such as ever-changing IP addresses, collision domains, or other topological requirements.
<p>Devin Akin, CTO at Wi-Fi training and certification company CWNP, recommends appropriately spacing out APs on the same channel to create multiple collision domains so that the aggregate system bandwidth shared by users remains abundant.
Since both ends of the link can be configured to full duplex, worrying about the collision domains is not necessary, and 10/100 media converters are not needed, unless network administrators see the possibility of downgrading the link speed to 10 Mbps.
Furthermore, they separate collision domains and allow users to limit an impact of the 512-bit time rule to a small segment of their network, allowing them to extend a distance via a full duplex link.
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