Refimprove date August 2010 ARCNET also CamelCase d as ARCnet , an acronym from Attached Resource Computer ... or IBM token ring Token Ring . ARCNET was the first widely available networking system for microcomputer ... ARCNET was developed by principal development engineer John Murphy engineer John Murphy at Datapoint ... , ARCNET Trade Association ref It was originally developed to connect groups of their Datapoint 2200 ..., ARCNET was re purposed as LAN. It was the first loosely coupled LAN based clustering solution, making ... of the original computer, additional compute resource computers could be attached via ARCNET ... of the 1970s before the first cassette based IBM PC was announced in 1981 over ten thousand ARCnet ... company. As microcomputers took over the industry, well proven and reliable ARCNET was also offered as an inexpensive LAN for these machines. ARCNET remained proprietary until the early to mid 1980s ... control over standardization that competitors were wary of using it. ARCNET was less expensive than ... 2.5 Mbit s for ARCnet helped to increase Ethernet demand, and as more companies entered the market the price of Ethernet started to fall&mdash and ARCNET and Token Ring volumes tapered off. In response to greater bandwidth needs, and the challenge of Ethernet, a new standard called ARCnet Plus was developed by Datapoint, and introduced in 1992. ARCnet Plus ran at nowrap 20 Mbit s , and was backward compatible with original ARCnet equipment. However, by the time ARCnet Plus products were ready ... for users to move back to ARCnet. As a result, very few ARCnet Plus products were ever produced. Those that were built, mainly by Datapoint, were expensive, and hard to find. ARCNET was eventually standardized as American National Standards Institute ANSI ARCNET 878.1. It appears this was when the name changed from ARCnet to ARCNET. Other companies entered the market, notably Standard Microsystems ... and later custom programming in the embedded market. Even though ARCNET is now rarely used ... more details
Unreferenced stub auto yes date December 2009 In telecommunication , token passing is a channel access method where a signal called a token is passed between nodes that authorizes the node to communicate. The most well known examples are token ring and ARCNET . Token passing schemes provide round robin scheduling , and if the packets are equally sized, the scheduling is max min fair . The advantage over Contention telecommunications contention based channel access is that collisions are eliminated, and that the channel Bandwidth computing bandwidth can be fully utilized without idle time when demand is heavy. The disadvantage is that even when demand is light, a station wishing to transmit must wait for the token, increasing latency engineering latency . Some types of token passing schemes do not need to explicitly send a token between systems because the process of passing the token is implicit. An example is the channel access method used during Contention Free Time Slots in the ITU T G.hn standard for high speed local area network ing using existing home wires power lines, phone lines and coaxial cable . See also IBM token ring Token ring ARCNET Cambridge Ring DEFAULTSORT Token Passing Category Channel access methods Compu network stub de Tokenweitergabe es Token passing nl Token passing ja pl Token passing simple Token passing ... more details
BLP sources date October 2010 Orphan date February 2009 Andrew Thompson is an Australia n parasitologist . He is Professor of Parasitology at Murdoch University ref http www.abc.net.au rural nt stories s898327.htm Parasites which threaten Australia ref and a member of the Management Committee of the Australian Society for Parasitology . ref http parasite.org.au arcnet about structure.html Structure of the Network ref References Reflist External links http www.vetbiomed.murdoch.edu.au research Parasitology Team.html RCAT Parasitology at Murdoch University Persondata Metadata see Wikipedia Persondata . NAME Thompson, Andrew ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Thompson, Andrew Category Parasitologists Category Australian academics Category Living people Australia scientist stub biologist stub ... more details
Category 2 cable , or simply Cat 2 , is a misnomer, probably adopted by those who assumed that the Telecommunications Industry Association set up Categories for all types of cables originally defined by Anixter International Anixter , the distributor, under the grades called Levels . TIA EIA 568 B TIA 568 only recognized cables of Category 3 cable Category 3 ratings or above. Anixter Level 2 was a grade of UTP cable capable of transmitting data at up to 4 Mbit s . It is the first cable which can transmit voice and data up to 4mbps. Anixter Level 2 cable was frequently used on ARCnet and 4 Mbit s token ring networks, it is also used in telephone networks but it is no longer commonly used. References references http www.ciscopress.com articles article.asp?p 31276 CCNA Network Media Types UTP Cable Standards Category Networking hardware Category Signal cables compu network stub es Cable de Categor a 2 tr Kategori 2 kablo ... more details
Computer networks may be implemented using a variety of protocol stack architectures, computer bus es or combinations of media and protocol layers, incorporating one or more of ARCNET AppleTalk Asynchronous Transfer Mode ATM Bluetooth DECnet Ethernet Fiber distributed data interface FDDI Frame relay HIPPI FireWire IEEE 1394 aka FireWire, iLink IEEE 802.11 aka Wireless LAN Wi Fi certification IEEE 488 Internet protocol suite IPX Myrinet OSI protocol suite QsNet RS 232 Sequenced packet exchange SPX System network architecture System Network Architecture IBM token ring Token ring Universal Serial Bus USB X.25 protocol suite For more lists List of network protocols disambiguation List of network protocols for more info on communications protocols Communications protocol For standards IEEE 802 Categories Category Network protocols Category Computing lists Network protocol stacks ... more details
commercial clustering product was ARCnet , developed by Datapoint in 1977. ARCnet was not a commercial ... their VAXcluster product in 1984 for the VAX VMS operating system. The ARCnet and VAXcluster ... more details
Image Token bus.PNG thumb Token passing in a Token bus network Token bus is a network implementing the token ring protocol over a virtual ring on a coaxial cable . A token is passed around the network nodes and only the node possessing the token may transmit. If a node doesn t have anything to send, the token is passed on to the next node on the virtual ring. Each node must know the address of its neighbour in the ring, so a special protocol is needed to notify the other nodes of connections to, and disconnections from, the ring. Token bus was standardized by IEEE standard 802.4. It is mainly used for industrial applications. Token bus was used by GM General Motors Corporation General Motors for their Manufacturing Automation Protocol MAP standardization effort. This is an application of the concepts used in token ring networks. The main difference is that the endpoints of the bus do not meet to form a physical ring. The IEEE 802.4 Working Group is disbanded. In order to guarantee the packet delay and transmission in Token bus protocol, a modified Token bus was proposed in Manufacturing Automation Systems and flexible manufacturing system FMS . See also Token ring IEEE 802 ARCNET Network topology Bus network References reflist http www.linktionary.com t token bus.html Token bus at Linktionary.com http wrldcomp.com the token bus protocol index.html Token bus protocol External links http tools.ietf.org html rfc1042 Channel access methods IEEE standards DEFAULTSORT Token Bus Network Category Local area networks Category IEEE 802 network stub measurement stub cs Token Bus de Token Bus et Lubasiin el Token Bus es Token Bus eu Token bus fr Token bus id Token Bus it Token bus hu Token busz ja pl Token bus vi Token bus network zh ... more details
LANtastic is a peer to peer network operating system local area network LAN operating system for DOS , Microsoft Windows , Novell NetWare and OS 2 . LANtastic supports Ethernet , ARCNET and IBM token ring Token Ring network adapter adapters as well as its original twisted pair adapter at nowrap 2 Mbit s . Its multi platform support allows a LANtastic client computing client station to access any combination of Windows or DOS operating systems, and its interconnectivity allows file sharing sharing of files, Computer printer printers , CD ROM s and applications throughout an enterprise. LANtastic was especially popular before Windows 95 arrived with built in networking and was nearly as popular as the market leader at the time, Novell. LANtastic was originally developed by Vertical Communications Artisoft Inc. in Tucson, Arizona . Following the release of TeleVantage, Lantastic and Artisoft s other legacy products were acquired by http www.spartacom.com SpartaCom Technologies in 2000. SpartaCom was later acquired by PC Micro. The current 2006 version is LANtastic 8.01. It can connect PCs running DOS 5.0 or later with Windows 3.x or higher including Windows XP . Lantastic networks use NetBIOS ref name mcgrew nps netbios cite web title Artisoft Fundamentals of NetBIOS and LANtastic Networks url http web.archive.org web 20090105192408 http www.mcgrew.net Training NPS nps netbios.htm ref . External links http pcmicro.com lantastic pcmicro.com Official product website References references Category Network protocols es Lantastic pt Lantastic pl Lantastic ru LANtastic ... more details
Unreferenced date December 2009 Coord 41.440 93.658 region US IA type landmark display title The Distributed Training Operations Center DTOC is the Iowa Air National Guard center for Distributed Mission Operations located in Des Moines, Iowa Des Moines , Iowa United States USA . Distributed Mission Operations, or DMO, is a component of the Air Force Training Transformation initiative. The center organizes DMO events primarily for Iowa Air National Guard and Air Force Reserve Command aviator pilot s. It enables pilots from throughout the United States and the world to train together in a virtual world for combat missions. The DTOC facilitates training between Iowa Air National Guard fighter pilots and warfighters in the U.S. Army, Air Force Reserve, Navy, and other forces. The National Guard and Reserve Equipment Report for Fiscal Year 2008, reports that the Air National Guard ANG established the first Distributed Warfare Detachment in the Air Force at the 132 FW to house the Distributed Training Operation Center DTOC . The DTOC s one of a kind capabilities and mission will grow to keep pace with the scope of Distributed Mission Operations DMO in the Air Force over the next four years. As the Guard s DMO lynchpin, the DTOC will provide the operational environment for a virtual battlespace linking a wide array of high fidelity flight and mission crew simulators. The DTOC is responsible for all network management, event control, scenario development, unit DMO scheduling, remote maintenance, remote instruction, and realistic threat insertion. In addition, the DTOC manages the distributed network called ARCNET. The Mission Training Engineering Center MTEC , collocated with the AF Research Laboratory Air Force Research Laboratory AFRL , Mesa, AZ, coordinates technology programs with AFRL, and acts as the engineering focal point for the ARC to exploit and transition leading edge technology into hardware or software solutions. Category Facilities of the United States Air Na ... more details
took advantage of the token passing concept that made ARCNET and Token Ring popular in order to provide ... stayed within the hub, it did not have to traverse long cables going to every node as in ARCNET and Token ... more details
notability Products date June 2011 unreferenced date June 2011 Infobox OS name FREESCO logo screenshot caption developer Freesco Team family Unix like source model Open source working state Current latest release version 0.4.3 latest release date January 16, 2011 license GNU General Public License website http www.freesco.org www.freesco.org FREESCO stands for Free Cisco is a free replacement for commercial router computing router s supporting up to 10 Ethernet ARCNET ARCnet Token ring Aironet ARLAN Arlan network cards and up to nowrap 10 modem s . General description FREESCO is a floppy disk based router, which means that the entire system will run from a 1.44 MB floppy disk. It is also possible to run it entirely from RAM , in which case no disk activity occurs after startup. FREESCO works on any IBM PC compatible IBM compatible Personal computer PC i386 compatible spec or higher and can be optionally installed to a hard disk . In practice this means Intel 80486SX or better, with 12 MByte. Preferably more than 16 MByte to enable servers. The software is based on Linux , using a 2.0.39 Linux kernel or 2.0.40 . The first major version of FREESCO was v0.2.7 , originally made by Serguei Storozhevykh and continuously improved by Lewis Lightning Baughman. Since then, the software has improved substantially and comes with many server programs, but many more can be downloaded and installed. Configuration is designed to be simple enough for those with minimal networking knowledge, but also very flexible. The current version is v0.4.3 Features At present FREESCO allows the following out of the box Ethernet bridging Ethernet routing Internet connection sharing through Network Address Translation NAT of Dialup connections DSL connections including PPPoE and PPtP Leased line connections Firewall networking Firewall Dial in server Hypertext Transfer Protocol HTTP and File Transfer Protocol FTP servers Domain name system DNS and Dynamic Host Configuration Protocol DHCP servers S ... more details
. In late 1977, Datapoint introduced ARCnet local area networking. The original Type 1 2200 shipped ... Modem modems Hard disk drive hard disks Printer computing printers ARCNETARCnet LAN References references ... more details
Orphan date February 2009 The BT Merlin M4000 was a Personal computer sold by British Telecom during the 1980s as part of the Merlin range of electronic machinery for businesses. It was not developed by BT but was a rebadged Logica VTS 2400 Kennet, and a completely different machine from the Merlin Tonto which was a rebadged ICL OPD. Merlin M4000 was designed as a general purpose computer but was not IBM PC compatible , and so could not run the major business applications around at the time as these were tied to the IBM PC hardware. Hardware Merlin M4000 computers were packaged inside a substantial and heavy steel desktop computer desktop case weighing approximately 12kg. Inside the case was the main board, power supply, floppy and hard drives, and expansion cards. The design was reasonably modular as the case and main board were able to accommodate expansion cards and additional memory. A separate keyboard with 114 keys connected to the main unit using a reversed British telephone sockets British telephone plug with the clip on the left hand side. Most monitors were amber monochrome but later colour screens were sold. An Intel 8086 8086 central processing unit CPU was used. The maximum RAM was 768 KB, made up of 256 KB on the main board plus two additional 256 KB RAM cards. A security socket was located on the rear of the main unit although it is unclear how it was used in practice. Networking was accomplished using ARCNET or Cambridge Ring local area network LAN cards. An RS 232 optical fiber optical fibre modem was also available. The M4204T and M4213T computers were TEMPEST certified ref BT Brochure TEMPEST, System Solutions from British Telecom ref to BTR 01 202 4 . Storage media The M4204T had two internal 720 kB 5 inch floppy disk floppy drives and the M4213T had one internal 720 kB 5 inch floppy drive and one internal hard disk drive hard drive with a capacity of either 10 MB or 20 MB. An external 76 MB hard drive and or a 150 MB Tandberg QIC tape drive coul ... more details
Corp. Other Datapoint inventions were ARCnet , invented in 1977, which was an early Token ... later moved its hardware to be based on Intel 386 CPUs. ARCnet was briefly superseded by ARCnetplus ... more details
Busses IP 488 IP GPIB IEEE 488 bus controller talker listener Industrial Busses PMC ARCNET PMC ARCNET with isolated 485 or traditional interface Industrial Busses PMC ECAN PMC Dual isolated CAN ... more details
Unreferenced date December 2006 Cleanup date December 2007 Banyan VINES for Virtual Integrated NEtwork Service was a computer network operating system and the set of computer network protocol s it used to talk to client machines on the network. The Banyan company Banyan company based the VINES operating system on Unix , and the network protocols on the archetypical Xerox XNS stack. VINES formed one of a group of XNS based systems which also included Novell NetWare and ARCNET like most of these earlier products it has since disappeared from the market, Banyan along with it. James Allchin , who has since worked as Group Vice President for Platforms at Microsoft Corporation until his retirement at January 30, 2007, worked as the chief architect of Banyan VINES. VINES technology VINES ran on a low level protocol known as VIP , the VINES Internetwork Protocol essentially identical to the lower layers of XNS. Addresses consisted of a 32 bit address and a 16 bit subnet which mapped onto the 48 bit Ethernet address in order to route to machines. This meant that, like other XNS based systems, VINES could only support a two level internet. A set of routing algorithm s, however, set VINES apart from other XNS systems at this level. The key differentiator, ARP Address Resolution Protocol , allowed VINES clients to automatically set up their own network addresses. When a client first booted up it broadcast a request on the subnet asking for servers, which would respond with suggested addresses. The client would use the first to respond, although the servers could hand off better routing instructions to the client if the network changed. The overall concept very much resembled AppleTalk s AARP system, with the exception that VINES required at least one server, whereas AARP functioned completely headlessly . Like AARP, VINES required an inherently chatty network, sending updates about the status of clients to other servers on the internetwork . Rounding out its lower level system, ... more details
about network protocols organized by OSI model network protocols organized by TCP IP model Internet Protocol Suite This is a list of network Protocol computing protocol s, categorized by their nearest Open Systems Interconnection OSI Reference Model OSI model layers. This list is not exclusive to only the OSI protocols OSI protocol family . Many of these protocols are originally based on the Internet Protocol Suite TCP IP and other models and they often do not fit neatly into OSI layers. OSIModel Layer 1 2 protocols Physical Ethernet Generic Framing Procedure GFP ITU T G.7041 Generic Framing Procedure Optical Transport Network OTN ITU T G.709 Optical Transport Network also called Optical Channel Wrapper or Digital Wrapper Technology Data link layer Layer 2 protocols Data Link Layer ARCnet Attached Resource Computer NETwork Cisco Discovery Protocol CDP Cisco Discovery Protocol Data Link Switching Client Access Protocol DCAP Data Link Switching Client Access Protocol Distributed Multi Link Trunking Distributed Split Multi Link Trunking Dynamic Trunking Protocol Econet Fiber distributed data interface FDDI Fiber Distributed Data Interface Frame Relay ITU T G.hn Data Link Layer High Level Data Link Control HDLC High Level Data Link Control IEEE 802.11 WiFi IEEE 802.16 WiMAX Link Aggregation Control Protocol LACP Link Aggregation Control Protocol LattisNet LocalTalk L2F Layer 2 Forwarding Protocol L2TP Layer 2 Tunneling Protocol Link Access Procedures, D channel LAPD Link Access Procedures on the D channel Link Layer Discovery Protocol LLDP Link Layer Discovery Protocol LLDP MED Link Layer Discovery Protocol Media Endpoint Discovery Port Aggregation Protocol PAgP Cisco Systems proprietary link aggregation protocol Point to Point Protocol PPP Point to Point Protocol Point to point tunneling protocol PPTP Point to Point Tunneling Protocol Message Transfer Part Q.710 Simplified Message Transfer Part Multi link trunking Protocol Resilient Packet Ring RPR IEEE 802.17 Resilien ... more details
computer cluster. The first commercial clustering product was ARCnet , developed by Datapoint in 1977 ... product in 1984 for the VAX VMS operating system. The ARCnet and VAXcluster products not only ... more details
Encyclopedia
top
