gloss_I

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IBM 3270
The ubiquitous mainframe terminals and their controllers belong to the 3270 family. Common terminal models are the 3278, which supports color text, and the 3279, which supports graphics. Other members include the modern 3290 and 3187 terminals and the 3287 printer. The 3270 devices operate in block mode, where an entire page of text is transmitted at once, rather than character-by-character as keyed by the user . From the SNA perspective, these are LU2 devices. IBM 3270 terminals are emulated in the TCP/IP environment with the TN3270 service, which is an extension of telnet that is designed to handle ASCII-EBCDIC translation, keyboard mapping, and block-mode operation. See EBCDIC, IBM 5250, LU.
IBM 5250
IBM's LU7 terminals for midrange systems, such as the AS/400, constitute the 5250 family. Like IBM 3270 terminals, these are EBCDIC devices, which transmit information a page at a time. In the TCP/IP environment, the 5250 is emulated by the TN5250 service. See EBCDIC, IBM 3270, LU.
IEEE 802
The main IEEE standard for local area networking (LAN) and metropolitan area networking (MAN), including an overview of networking architecture, approved in 1990. According to the IEEE, the numbering for IEEE's 802-series LAN standards follows a unique pattern. If the number is followed by a capital letter, the designation refers to a stand-alone standard. If it is followed by a lower-case letter, it is a supplement to a standard or part of a multiple-number standard.
IEEE 802.1B
Standard for LAN/WAN management, approved in 1992 and, along with 802.1k, became the basis of ISO/IEC 15802-2.
IEEE 802.1D
Standard for interconnecting LANs using MAC bridges. Approved in 1990, it became the basis of ISO/IEC 10038.
IEEE 802.1E
Standard for LAN and MAN system load protocols. Approved in 1990, it became the basis of ISO/IEC 15802-4.
IEEE 802.1F
The standard for defining management information specified in 802, approved in 1993.
IEEE 802.1g
A proposed standard for remote MAC bridging.
IEEE 802.1H
Recommended practices for MAC bridging of Ethernet 2.0 LANs, approved in 1995.
IEEE 802.1i
Standard for using Fiber Distributed Data Interface (FDDI) as a MAC bridge. The standard was approved in 1992 and included in ISO/IEC 10038.
IEEE 802.1j
A supplement to 802.1D, this standard covers LAN connectivity using MAC bridges. It was approved in 1996.
IEEE 802.1k
Standard for LAN and MAN networks' discovery and dynamic control of event forwarding. It was approved in 1993 and, along with 802.1B, became the basis of ISO/IEC 15802-2.
IEEE 802.1m
Conformance statement for 802.1E. It covers the managed-object definitions and protocols for system load protocol. It was approved in 1993 and incorporated into ISO/IEC 15802-4.
IEEE 802.1p
Proposed standard for LANs and MANs that deals with expediting traffic and multicast filtering using MAC bridges.
IEEE 802.1Q
Proposed standard for virtual bridged LANs.
IEEE 802.2
Standard for logical link control in LAN and MAN connectivity, mainly using bridges. It is the basis of ISO/IEC 8802-2. The current version, approved in 1994, replaced an earlier 802.2 standard that was approved in 1989.
IEEE 802.3
Standard for LAN-based Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access methods and Physical layers , as well as the basis of ISO/IEC 8802-3. This is sometimes referred to as the "Ethernet standard." It was revised in 1996.
IEEE 802.3b
Standard for broadband media attachment unit and specifications for 10Broad36. It was approved in 1985 and incorporated into ISO/IEC 8802-3.
IEEE 802.3c
Standard for 10Mbit/sec baseband network repeaters. It was approved in 1985 and incorporated into ISO/IEC 8802-3.
IEEE 802.3d
Standard for media attachment units and baseband media specifications over fiber- optic repeater links. It was approved in 1987 and incorporated into ISO/IEC 8802-3.
IEEE 802.3e
Standard for Physical signaling, media attachment, and baseband media specifications for a 1Mbit/sec networkthat is, 1Base5. It was approved in 1987 and incorporated into ISO/IEC 8802-3.
IEEE 802.3h
Standard for layer management in Carrier Sense Multiple Access with Collision Detection (CSMA/CD) networks. It was approved in 1990 and incorporated into ISO/IEC 8802-3.
IEEE 802.3i
Standard covering two areas: multisegment 10Mbit/sec baseband networks and twisted-pair media for 10BaseT networks. It was approved in 1990 and incorporated into ISO/IEC 8802-3.
IEEE 802.3j
Standard for 10Mbit/sec active and passive star-based segments using fiber opticsthat is, 10BaseF. It was approved in 1993 and incorporated into ISO/IEC 8802-3.
IEEE 802.3k
Standard for layer management for 10Mbit/sec baseband repeaters. Approved in 1992, it was incorporated into ISO/IEC 8802-3.
IEEE 802.3l
Conformance statement for the 10BaseT media attachment unit protocol. It was approved in 1992 and incorporated into ISO/IEC 8802-3.
IEEE 802.3p
Standard for the 10Mbit/sec baseband media attachment units' layer management. It was approved in 1993 and incorporated into ISO/IEC 8802-3.
IEEE 802.3q
Guidelines for the development of managed objects. It was approved in 1993 and incorporated into ISO/IEC 8802-3.
IEEE 802.3r
The standard for the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and Physical layer specifications using 10Base5. It was updated in 1996.
IEEE 802.3t
Standard for supporting 120-ohm cables in 10BaseT simplex link segments. It was approved in 1995 and incorporated into ISO/IEC 8802-3.
IEEE 802.3u
Supplement to 802.3 covering MAC parameters, the Physical layer, and repeaters for 100Mbit/sec operationthat is, 100BaseT, generally known as Fast Ethernet. It was approved in 1995.
IEEE 802.3v
Standard for supporting 150-ohm cables in 10BaseT link segments. It was approved in 1995 and incorporated into ISO/IEC 8802-3.
IEEE 802.3w
Proposed standard for enhanced MAC algorithms.
IEEE 802.3x
Proposed standard for 802.3 full-duplex operation.
IEEE 802.3y
Proposed Physical-layer specification for 100Mbit/sec operation on two pairs of Category 3 or better balanced twisted-pair cablethat is, 100BaseT2.
IEEE 802.3z
Proposed standard for Physical-layer, repeater, and management parameters for 1,000Mbit/sec operation; often referred to as "Gigabit Ethernet."
IEEE 802.4
Standard for token-passing bus access methods and Physical-layer specifications. It was approved in 1990.
IEEE 802.5
Standard for token-ring access methods and Physical-layer specificationsthat is, common Token Ring architecture. It became the basis of ISO/IEC 8802-5. The current version was approved in 1995.
IEEE 802.6
The family of standards for a LAN's Distributed-Queue Dual-Bus (DQDB) subnetwork. It was approved in 1990.
IEEE 802.9
Standard for Integrated Services LAN (ISLAN), designed to connect 802.x LANs to publicly and privately administered backbone networks such as FDDI or ISDN. It was approved in 1994 and is the basis of ISO/IEC 8802-9.
IEEE 802.10
Standard for Interoperable LAN Security, also known as SILS. It was approved in 1992.
IEEE 802.11
Standard for wireless LAN MAC and Physical-layer specifications. Current drafts focus on the 2.4GHz band .
IEEE 802.12
Standard for 100Mbit/sec demand-priority access method Physical-layer and repeater specifications, also known as 100VG-AnyLAN. It was approved in 1995.
IEEE
Institute for Electrical and Electronics Engineers ; for information, browse www.ieee.org . Many IEEE-approved networking standards became the basis of the international networking standards specified by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). See ISO/IEC.
impedance.
Impedance is the resistance equivalent for AC, and it affects a network's propagation delay and attenuation. Each protocol and topology has its own impedance standards. For example, 10BaseT UTP cable has an impedance of 100 ohms to 105 ohms, while 10Base2 coaxial cable has an impedance of 50 ohms.
IND$FILE
This program runs on mainframes to support file transfers between the mainframe and LU2 terminal devices, such as 3270 terminals or PCs running TN3270. IND$FILE is analogous to ftp under TCP/IP. TN3270 and TN5250 emulators often use IND$FILE to transfer files between PCs and mainframe and midrange computers. See IBM 3270.
infrared.
Infrared electromagnetic waves have frequencies higher than microwaves but lower than the visible spectrum. Infrared transmission is used for wireless LANs, as well as for point-to-point communications with portable devices.
Infrared may also be used as a wireless medium, and has greatest applicability for mobile applications due to its low cost. Infrared allows for higher throughputmeasured in megabits per secondthan spread spectrum, but it offers more limited distances. Infrared beams cannot pass through walls.
Institute of Electronics and Electrical Engineers (IEEE).
The IEEE is a professional society of electrical engineers. One of its functions is to coordinate, develop, and publish data communications standards for use in the United States. See IEEE.
Integrated Services Digital Network (ISDN).
ISDN is the ITU standard for carrying voice and data to the same destination. Although ISDN has not been popular in the United States, it is commonly available in Europe ( especially in the U.K., Germany, and France) and in Japan.
intermediate system.
In OSI terminology, an intermediate system is a router.
Intermediate System-to-Intermediate System (IS-IS).
IS-IS is an OSI routing protocol that provides dynamic routing between routers or intermediate systems.
International Organization for Standardization (ISO).
ISO is a multinational standards-setting organization that formulates computer and communication standards, among others. ISO defined the OSI reference model, which divides computer communications into seven layers: Physical, Data-link, Network, Transport, Session, Presentation, and Application.
Internet Activities Board (IAB).
The IAB is the coordinating committee for the design, engineering, and management of the Internet. The IAB has two main committees : the Internet Engineering Task Force (IETF) and the Internet Research Task Force (IRTF). The IETF specifies protocols and recommends Internet standards. The IRTF researches technologies and refers them to the IETF.
Internet Protocol (IP).
IP is part of the TCP/IP suite. It is a network-layer protocol that governs packet forwarding from network to network.
Internet.
The Internet is a collection of packet-switched networks all linked using the TCP/IP protocol.
Internetwork Packet Exchange (IPX).
IPX is the part of Novell's NetWare stack that governs packet forwarding. This network protocol is based on the Xerox Network System (XNS).
internetwork.
An internetwork is a collection of several networks that are connected by bridges, switches, or routers, so all users and devices can communicate, regardless of the network segment to which they are attached.
interoperability.
Interoperability is the ability of one manufacturer's computer equipment to operate alongside , communicate with, and exchange information with another vendor's dissimilar computer equipment or software.
inverted backbone.
An inverted backbone is a network architecture in which the wiring hub and routers become the center of the network, and all subnetworks connect to this hub. In a backbone network, the cable is the main venue of the network, to which many bridges and routers attach.
ISO/IEC 10038
Standard for interconnecting LANs using MAC bridges. Based on IEEE 802.1D and incorporating 802.1i and 802.1m, it was approved in 1993.
ISO/IEC 11802-4
Technical report, not a standard, based on IEEE 802.5j. It covers Token Ring access methods using fiber optic stations . The report was issued in June 1994.
ISO/IEC 15802-2
Common specifications for LAN and MAN management. Based on IEEE 802.1B and 802.1k, it was approved in 1995.
ISO/IEC 15802-4
Standard for LAN and MAN system load protocols. Based on IEEE 802.1E and incorporating 802.1m, it was approved in 1994.
ISO/IEC 8802-2
Standard for logical link control in LAN and MAN connectivity, mainly using bridges. This is based on IEEE 802.2 (1994 edition) and incorporates 802.2a, 802.2b, 802.2d, 802.2e, and 802.5p. This standard replaced the 1989 versions of both standards and was approved in 1994.
ISO/IEC 8802-3
Standard for LAN CSMA/CD access methods and Physical layers. It is based on IEEE 802.3 and incorporates 802.3b, 802.3c, 802.3d, 802.3e, 802.3h, 802.3i, 802.3j, 802.3k, 802.3l, 802.3m, 802.3n, 802.3p, 802.3q, 802.3s, 802.3t, and 802.3v. Approved in 1996, it replaced the 1993 version of the standard.
ISO/IEC 8802-5
Standard for Token Ring access methods and Physical-layer specificationsthat is, common Token Ring architecture. It is based on IEEE 802.5, incorporating 802.5b, and was approved in 1995, replacing a 1992 version.
ISO/IEC 8802-9
Standard for LAN interfaces at the MAC and Physical layers. Based on IEEE 802.9, it was approved in 1996.
ISO/IEC
ISO is the International Organization for Standardization ( www.iso.ch ). IEC is the International Electrotechnical Commission (www.iec.ch). The organizations have a joint committee, called JTC1, which has created international networking standards largely based on IEEE's approved standards.
isochronous transmission.
An isochronous service transmits asynchronous data over a synchronous data link. An isochronous service must be able to deliver bandwidth at specific, regular intervals. It is required when time-dependent data, such as video or voice, is to be transmitted. For example, Asynchronous Transfer Mode can provide isochronous service.
 
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Network Tutorial
Lan Tutorial With Glossary of Terms: A Complete Introduction to Local Area Networks (Lan Networking Library)
ISBN: 0879303794
EAN: 2147483647
Year: 2003
Pages: 193

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