MRV Communications MR2228-S2C User Manual

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IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125, 
62.5/125 or 9/125 micron core fiber cable. 
1000BASE-LH 
Specification for long-haul Gigabit Ethernet over two strands of 9/125 micron core 
fiber 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. 
Full Duplex 
Transmission method that allows two network devices to transmit and receive 
concurrently, effectively doubling the bandwidth of that link. 
IEEE 
Institute of Electrical and Electronic Engineers. 
IEEE 802.3 
Defines carrier sense multiple access with collision detection (CSMA/CD) access