112 G LOSSARYfull duplex A system that allows packets to be transmitted and received at thesame time and, in effect, doubles the potential throughput of a link.gateway See router.GBIC Gigabit Interface Converter.Gigabit Ethernet IEEE standard 802.3z for 1000 Mbps Ethernet; it is compatible withexisting 10/100 Mbps Ethernet standards.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.HTTP Hypertext Transfer Protocol. This is a set of rules for exchanging files(text, graphic images, sound, video, and other multimedia files) on theWorld Wide Web.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.IEEE 802.1p A standard that defines traffic prioritization. 802.1p is nowincorporated into the relevant sections of the IEEE 802.1D/D17standard.IEEE 802.1Q A standard that defines VLAN tagging.IEEE 802.3x A standard that defines a system of flow control for ports that operatein full duplex.IEEE 802.1w A standard that defines Rapid Spanning Tree Protocol (RSTP) behavior.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.dua1730-0bAA03.book Page 112 Monday, July 11, 2005 11:14 AM