Glossary
Glossary-3
IEEE 802.3
Defines carrier sense multiple access with collision detection (CSMA/CD) access
method and physical layer specifications.
IEEE 802.3ab
Defines CSMA/CD access method and physical layer specifications for
1000BASE-T Gigabit Ethernet.
IEEE 802.3u
Defines CSMA/CD access method and physical layer specifications for
100BASE-TX and 100BASE-FX Fast Ethernet.
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on
full-duplex links.
IEEE 802.3z
Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet.
LAN Segment
Separate LAN or collision domain.
Layer 2
Data Link layer in the ISO 7-Layer Data Communications Protocol. This is related
directly to the hardware interface for network devices and passes on traffic based on
MAC addresses.
Layer 3
Network layer in the ISO 7-Layer Data Communications Protocol. This layer handles
the routing functions for data moving from one open system to another.
LED
Light emitting diode used for monitoring a device or network condition.
Link Aggregation
See Port Trunk.
Local Area Network (LAN)
A group of interconnected computer and support devices.
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