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Fast EtherHub User’s Guide
2 Glossary
Ethernet
A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseband transmission, CSMA/CD access and 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 optics, broadband, and twisted-pair.
Fast Ethernet
100 Mbps network communication system based on Ethernet and the CSMA/CD access
method.
IEEE 802.3 Standard
Standard for the physical and electrical connections in local area networks developed by
the IEEE. The IEEE 802.3u standard covers these same issues for 100 Mbps networks.
LED
Light emitting diode on the front panel of the hub used for monitoring a hub or network
condition. An LED display corresponds to a hub condition.
Local Area Network (LAN)
A group of interconnected computers and support devices.
MDI Port (Medium Dependent Interface)
MDI is the IEEE standard for the twisted-pair interface to 10BASE-T (or 100BASE-
TX). This RJ-45 port can be used with straight-through cable to connect the hub to a
network interconnection device, such a switch. Pin-out assignments are shown in
Appendix B.