Galactic Network
Galactic Network can be said to be the first conception of what would eventually became the Internet. The original idea was conceived by J.C.R. Licklider in August of 1962 at MIT. He wrote a number of articles where he envisioned the idea of a series of globally interconnected computers where resources and information could be accessed from any site. Licklider later teamed up with ARPA and the rest is history.
Gatekeeper
Gatekeeper is a component in a VOIP network based on the H.323 architecture. The gatekeeper provides address translation and control access to the network for H.323 terminals and gateways. The gatekeeper may provide other services to the H.323 terminals and gateways, such as bandwidth management and locating gateways.
Gateway
A gateway in networking refers to a device in the network which allows devices with different protocol bases to communicate to each other by doing certain protocol mapping and translation. For example, a VOIP gateway in the H.323 architecture allows H.323 terminals to communicate with non-H.323 terminals by converting protocols. The H.323 gateway is the point at which a circuit-switched call is encoded and repackaged into IP packets. A H.323 gateway is an endpoint that provides real-time, two-way communications between H.323 terminals on the network and other ITU-T terminals in the WAN, or to another H.323 gateway.
Gateway Host
Gateway Host is a component in the IBM In SNA, which is a host node that contains a gateway system services control point (SSCP).
Gateway NCP
Gateway Netwrok Control Program (NCP) is a component in the IBM SNA that connects two or more SNA networks and performs address translation to allow cross-network session traffic.
Gateway Redundancy
Gateway Redundancy refers to a feature that enables the Gatekeeper to request that other Gatekeepers search their zones to locate a Gateway when Line Hunting fails to find a suitable service provider. If there is no service provider available, the Gateway Redundancy policy reables the Gatekeeper to complete the call by referring the call to other Gatekeepers.
Gateway Supported Prefixes
Gateway Supported Prefixes refers to some features in standard of H.323 version 2. It enables a Gateway to specify prefixes that the user should dial before the WAN number in order to make a call using a certain medium.
Gb: Gigabit
Gigabit (Gb), approximately 1,000,000,000 bits, is a measure of computer data storage.
GB: Gigabyte
Gigabyte (GB), approximately 1,000,000,000 bytes (one byte is 8 bits), is a measure of computer data storage.
GBIC: Gigabit Interface Converter
Gigabit Interface Converter (GBIC) is a standard for transceivers, commonly used with gigabit Ethernet and fibre channel.
Gbps: Gigabits Per Second
Gigabits per Second (Gbps) is a measure of data transfer speed in networking. Gigabytes Per Second (GBps) is eight times more than the Gigabits Per Second (Gbps).
GBps: Gigabytes Per Second
Gigabytes Per Second (GBps) is a measure of data transfer speed in networking. Gigabytes Per Second (GBps) is eight times more than the Gigabits Per Second (Gbps).
GCAC: Generic Connection Admission Control
Generic Connection Admission Control (GCAC) is an ATM PNNI algorithm designed for CBR and VBR connections. Any node can use GCAC to calculate the expected CAC behavior of another node given that node's advertised link metrics and the QoS of a connection setup request.
GCF: Gatekeeper ConFirmation
Gatekeeper ConFirmation (GCF) is a Registration, Admission and Status (RAS) message sent as a gatekeeper confirmation, which is part of the H.323 VOIP networking.
GCRA: Generic Cell Rate Algorithm
Generic Cell Rate Algorithm (GCRA) is an ATM an algorithm that defines conformance with respect to the traffic contract of the connection. For each cell arrival, the GCRA determines whether the cell conforms to the traffic contract.
GDMO: Guidelines for Definitions of Managed Options
The Guidelines for Definitions of Managed Options (GDMO) is an specification for defining managed objects of interest to the Telecommunications Management Network for use in Common Management Information Protocol (CMIP). GDMO is similar to the Struture of Management Information for defining a management information base for Simple Network Management Protocol (SNMP).
GEANT
GÉANT is the main European multi-gigabit computer network for research and education purposes. GÉANT link speeds range from 155 Mbit/s on the slowest spur links to 10 Gbit/s in the core optical fiber network.The GÉANT project began in November, 2000, entered full production operation in December, 2001 (fully replacing TEN-155). GÉANT2 is the successor of the project, and it began in September, 2004.
GEANT2
GANT2 is the seventh generation of pan-European research and education network, successor to the pan-European multi-gigabit research network GANT. The project within which the network is funded began officially on 1 September 2004, and will run for four years. This site provides information on the network, and on the other project activities which will be carried out alongside it. GANT2 is co-funded by the European Commission and Europe's national research and education networks, and is managed by DANTE.
Gethostbyaddr
The gethostbyaddr is a Domain Name Service (DNS) query when the address of a machine is known and the name is needed.
Gethostbyname
The gethostbyname is a Domain Name Service (DNS) quest when the name of a machine is known and the address is needed.
GFC: Generic Flow Control
Generic Flow Control (GFC) is a field in the ATM header which can be used to provide local functions (e.g., flow control). It has local significance only and the value encoded in the field is not carried end-to-end.
GG45
The GG45 is a connector for high speed CAT7 LAN cabling developed by Nexans. The cabling system was standardized in 2001 as IEC 60603-7-7, and then selected as the worldwide CAT7 cabling standard within ISO11801. It is a 2-in-1 solution providing backwards compatibility for standard RJ45 connectors in a CAT6 interface (Mode 1), where eight conductors are used for CAT6 (100/250 MHz) operation.
Gigabit Ethernet
Gigabit Ethernet is a type of the Ethernet with speed tenfold over the fast Ethernet supporting a theoretical maximum data rate of 1000 Mbps. It uses shorter frames with carrier Extension. It is defined in the IEEE 802.3z and 802.3ab, supplement to the IEEE 802.3 base standards.
Gigapackets
Gigapackets refers to a billion (one thousand million) of packets or datagrams. The packet is one of the basic unit of information in computer networks. A packet may include a few to a few hundred bytes of information. Data transfer rates in gigapackets per second are associated with high speed networks, especially fiber optic networks at carrier rates of OC-48 at 2.5 Gbit/s and OC-192 at 10 Gbit/s.
GIX: Global Internet eXchange
Global Internet eXchange (GIX) is a common routing exchange point that allows pairs of networks to implement agreed-upon routing policies. The GIX is intended to allow maximum connectivity to the Internet for networks all over the world.
Gleaning
Gleaning is the process by which a router automatically derives AARP table entries from incoming packets. Gleaning speeds up the process of populating the AARP table.
GLORIAD: Global Ring Network for Advanced Application Development
Global Ring Network for Advanced Application Development (GLORIAD) is a high-speed computer network used to connect scientific organizations in Russia, China, United States, the Netherlands, Korea and Canada. GLORIAD is sponsored by the US National Science Foundation, a consortium of science organizations and Ministries in Russia, the Chinese Academy of Sciences, the Ministry of Science and Technology of Korea, the Canadian CANARIE network, the Netherlands SURFnet team and has some telecommunications services donated by Tyco Telecommunications.
GMCU: Group Matrix Card Unit
Group Matrix Card Unit (GMCU), located in the Line bay, selects one of the two optical signals and routes the signal to the Matrix Card (MC) units in the Matrix bay.
GNN: Global Network Navigator
Global Network Navigator (GNN) was a website established by O'Reilly & Associates in 1993, making it one of the first commercial websites on the World Wide Web. Its main purpose was a guide to various services available on the Internet, like an early stage Portal. The website was sold to America Online in 1995.
GNS: Get Nearest Server
Get Nearest Server (GNS), part of the IPX SAP, is a request packet sent by a client on an IPX network to locate the nearest active server of a particular type. An IPX network client issues a GNS request to solicit either a direct response from a connected server or a response from a router that tells it where on the internetwork the service can be located.
GNU Zebra
GNU Zebra, a routing software package distributed under the GNU (General Public License), provides TCP/IP-based routing services with routing protocols support such as RIPv1, RIPv2, RIPng, OSPFv2, OSPFv3, BGP-4, and BGP-4+. Zebra supports special BGP Route Reflector and Route Server behavior. In addition to traditional IPv4 routing protocols, Zebra also supports IPv6 routing protocols. With SNMP daemon which supports SMUX protocol, Zebra provides routing protocol MIBs.
GNUnet
GNUnet is a free software framework for decentralized, peer-to-peer networking. The framework offers link encryption, peer discovery and resource allocation. GNUnet was first published November 6, 2001. GNUnet currently runs on GNU/Linux, BSD, Mac OS X, Solaris and Windows.
Gnutella
Gnutella is a decentralized P2P file sharing protocol. Using an installed Gnutella client, users can search, download and upload files across the Internet. Popular Gnutella clients include BearShare, Limewire and Shareaza. Gnutella remains fairly popular but less so than some other P2P networks, principally eDonkey2000 and BitTorrent.
Godzillagram
A Godzillagram is a network packet that, in theory, is broadcast to every system that is connected directly or indirectly to the internet backbone.
Go-Back-N ARQ
Go-Back-N ARQ is a specific instance of the Automatic Repeat-reQuest (ARQ) Protocol, in which the sending process continues to send a number of frames specified by a window size without receiving an ACK packet from the receiver.
Goodput
Goodput refers to the measurement of actual data successfully transmitted from the senders to the receivers.
GOSIP: Government OSI Profile
Government Open System Interconnection Profile (GOSIP) is a subset of OSI standards specific to US Government procurements, designed to maximize interoperability in areas where plain OSI standards are ambiguous or allow options. Through GOSIP, the government mandates that all federal agencies standardize on OSI and implement OSI-based systems as they become commercially available.
Gotnap
Gotnap is a fully automated database for maintaining an opennap/SlavaNap network. Similar to previous opennap/slavanap databases like napigator, gotnap allows server owners to be in full control over their server and their network and allow users to find and connect to fresh and new servers. Servers list can also be exported in many formats, to deal with your client.
Grid Network
A grid network consists of a number of computer systems connected in a grid topology. In a regular grid topology, each node in the network is connected with two neighbors along one or more dimensions. If the network is one-dimensional, and the chain of nodes is connected to form a circular loop, the resulting topology is known as a ring.
GRJ: Gatekeeper ReJection
Gatekeeper ReJection (GRJ) is a Registration, Admission and Status (RAS) message sent as a gatekeeper rejection, which is part of the H.323 VOIP networking.
GRNET: Greek Research and Technology Network
Greek Research and Technology Network (GRNET) is the network connecting Greek academic and reserch institutions. The mission of the GRNET is the provision of high-quality international and national networking services to Greek academic & research institutions and to the public and private sectors in support of their research and educational activities.
Groove
The Groove system, a distributed system based on peer-to-peer (P2P) architecture, allows people on the Internet to meet and work together. Groove includes applications such as chat, file sharing, and bulletin boards. It also includes programming libraries and APIs that allow software developers to build their own applications or extend the existing ones.
Group 3
Group 3 is an ITU-T standard relating to fax devices. A Group 3 fax device is a digital machine containing a 14400 baud modem that can transmit an 8 1/2 by 11 inch page in approximately 20 seconds with a resolution of either 203 by 98 dots per inch (dpi) or 203 by 196 dpi (fine), using Huffman code to compress fax data. Group 3 faxes use a standard dial-up telephone line for transmission.
GRQ: Gatekeeper ReQuest
Gatekeeper ReQuest (GRQ) is Registration, Admission and Status (RAS) message sent as a gatekeeper request, which is part of the H.323 VOIP networking.