User manual

Glossary
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NXA-ENET24 Hardware Installation Guide
Glossary
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5 UTP cable.
1000BASE-SX
IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125 or 62.5/125 micron core fiber
cable.
1000BASE-LH
Long range Gigabit Ethernet over two strands of 9/125 micron core fiber cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP cable.
1000BASE-T
IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5, 5e or 6 twisted-pair cable
(using all four wire pairs).
Auto-Negotiation
Signalling method allowing each node to select its optimum operational mode
(e.g., speed and duplex mode) based on the capabilities of the node to which it is connected.
Bandwidth
The difference between the highest and lowest frequencies available for network signals. Also
synonymous with wire speed, the actual speed of the data transmission along the cable.
Collision
A condition in which packets transmitted over the cable interfere
with each other. Their interference
makes both signals unintelligible.
Collision Domain
Single CSMA/CD LAN segment.
CSMA/CD
CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication method employed by
Ethernet, Fast Ethernet, and Gigabit Ethernet.
End Station
A workstation, server, or other device that does not forward traffic.
Ethernet
A network communication system developed and standardized by DEC, Intel, and Xerox, using
baseband transmission, CSMA/CD access, logical bus topology, and coaxial cable. The successor IEEE
802.3 standard provides for integration into the OSI model and extends the physical layer and media
with repeaters and implementations that operate on fiber, thin coax and twisted-pair cable.
Fast Ethernet
A 100 Mbps network communication system based on Ethernet and the CSMA/CD access method.
Gigabit Ethernet
A 1000 Mbps network communication system based on Ethernet and the CSMA/CD access method.