57full duplex A system that allows packets to be transmitted and received at thesame time and, in effect, doubles the potential throughput of a link.half duplex A system that allows packets to transmitted and received, but not atthe same time. Contrast with full duplex.hub A device that regenerates LAN traffic so that the transmission distanceof that signal can be extended. Hubs are similar to repeaters, in thatthey connect LANs of the same type; however they connect more LANsthan a repeater and are generally more sophisticated.IEEE Institute of Electrical and Electronics Engineers. This Americanorganization was founded in 1963 and sets standards for computersand communications.IEEE 802.1D A standard that defines the behavior of bridges in an Ethernet network.IETF Internet Engineering Task Force. An organization responsible forproviding engineering solutions for TCP/IP networks. In the networkmanagement area, this group is responsible for the development of theSNMP protocol.IP Internet Protocol. IP is a layer 3 network protocol that is the standardfor sending data through a network. IP is part of the TCP/IP set ofprotocols that describe the routing of packets to addressed devices.IPX Internetwork Packet Exchange. IPX is a layer 3 and 4 network protocoldesigned for networks that use Novell Netware.IP address Internet Protocol address. A unique identifier for a device attached to anetwork using TCP/IP. The address is written as four octets separatedwith periods (full-stops), and is made up of a network section, anoptional subnet section and a host section.LAN Local Area Network. A network of endstations (such as PCs, printers,servers) and network devices (hubs and switches) that cover a relativelysmall geographic area (usually not larger than a floor or building). LANsare characterized by high transmission speeds over short distances (upto 1000m).line speed See baud.1697ua.bk Page 57 Monday, December 3, 2001 11:31 AM