Unreferenced date January 2009 Image 4 port netgear ethernet hub.jpg thumb 300px 4 port Ethernethub An Ethernethub , active hub , network hub , repeater hub or hub is a device for connecting multiple Ethernet over twisted pair twisted pair or optical fiber fiber optic Ethernet devices together and making ... medium. Thus, hub based Ethernet is generally more robust than coaxial cable based Ethernet e.g. ... HubReference Hub Reference DEFAULTSORT EthernetHub Category Ethernet Category Networking ... fa fr HubEthernet gl Concentrador ko hi id Hub ia Concentrator it Hub informatica ... no Hub datanettverk pl Koncentrator pt Concentrador ru sk Rozbo ova ethernet ... applications. Technical information A network hub is a fairly unsophisticated broadcast device ... built using Ethernet switch switches does not have these limitations . For 10 Mbit s networks built ... chaining through Ethernet cables, but even so, a large fast Ethernet network is likely to require ... automatically, a hub simplifies troubleshooting because they remove the need to troubleshoot faults on a long cable with multiple taps status lights on the hub can indicate the possible problem source or, as a last resort, devices can be disconnected from a hub one at a time much more ... any of the data passing through them and are not aware of their source or destination. A hub simply receives incoming Ethernet frame s, regenerates the electrical signal, and broadcasts these packets ... an 802.3 segment Ethernet and an 802.5 segment Token Ring . That is, they cannot translate an Ethernet ... is renamed In the early days of fast Ethernet, Ethernet switches were relatively expensive devices ... network needed to run at 10 Mbit s. Therefore a compromise between a hub and a switch was developed, known as a dual speed hub . These devices consisted of an internal two port switch, dividing ... the need for an all or nothing migration fast Ethernet networks. These devices are considered ... more details
10.1145 52325.52347 ref Repeaters and hubs Main Ethernethub For signal degradation and timing reasons ... hub, latter called LattisNet . ref cite book title Ethernet The Definitive Guide publisher O Reilly ...Image Ethernet RJ45 connector p1160054.jpg thumb A standard 8P8C often called RJ45 Electrical connector connector used most commonly on Category 5 cable cat 5 cable , a type of cabling used primarily in Ethernet networks Ethernet IPAc en icon i r n t is a family of Data frame frame based computer ... part of the Data Link Layer . Ethernet is standardized as IEEE 802.3 . The combination of the Ethernet over twisted pair twisted pair versions of Ethernet for connecting end systems to the network, along ... chapter Ethernet url http docwiki.cisco.com wiki Ethernet Technologies publisher Cisco Systems accessdate ... Ethernet was developed at Xerox PARC between 1973 and 1975. ref cite web url http americanhistory.si.edu collections object.cfm?key 35&objkey 96 title Ethernet Prototype Circuit Board publisher ..., David R. year 1976 month July title Ethernet Distributed Packet Switching for Local Computer Networks ... note The experimental Ethernet described in the 1976 paper ran at 3 Mbit s and had eight bit destination and source address fields, so the original Ethernet addresses were not the MAC address ... type in the current Ethernet standard, which specifies the protocol being used. ref Metcalfe left ... Ethernet as a standard, the so called DIX standard, for Digital Intel Xerox it specified the 10 Mbit s Ethernet, with 48 bit destination and source addresses and a global 16 bit Ethertype type field and was first published on September 30, 1980 as The Ethernet, A Local Area Network. Data Link Layer and Physical Layer Specifications . ref cite book title The Ethernet, A Local Area Network. Data ... in November, 1982 and defines what has become known as Ethernet II . The Institute of Electrical and Electronics ... Switched, Fast, and Gigabit Ethernet author Robert Breyer & Sean Riley publisher Macmillan isbn 1 ... more details
wiktionarypar hub TOCright Originally, the term hub referred to the central part of a wheel . Hub , HUB , Hubs , or HUBS has many uses, as listed below. Technology Wheels Bicycle wheel Hub Bicycle hub , the central part of a bicycle wheel Hub gear , bicycle gear Hub dynamo , bicycle dynamo Locking hubs , accessory on four wheel drive vehicles Wheel hub assembly , auto part Computing Ethernethub , computer networking device USB hub , allows many USB devices to be connected to a single USB port Hubs and authorities , a scheme used for ranking web pages Transport Transport hub , where traffic is exchanged across several modes of transport Airline hub , an airport used as transfer point Reliever hub , secondary airline hub People Hub bassist , American musician Hub artist , artist and illustrator of Okko magazine Hub van Doorne 1900 1979 , Dutch businessman Hub Kittle , 1917 2004 , American baseball player Hub Walker 1906 1982 , American baseball player Hub Bechtol 1926 2004 , American footballer Fictional characters Hub comics , Marvel comics fictional character Hubs Transformers , Fictional character Places Hub, California , unincorporated community in California, United States Hub River , in Balochistan, Pakistan Hub Tehsil , in Balochistan, Pakistan Hub, Balochistan , city in Hub Tehsil Hub Dam , in Balochistan Hub Dam Wildlife Sanctuary , in Balochistan Hub City disambiguation , the nickname of several cities Buildings AMK Hub , shopping mall in Singapore Henry Hub , gas pipeline structure in Louisiana, United States Hetzel Union Building, now HUB Robeson Center , Penn State University, United States Husky Union Building , University of Washington, United States HDB Hub , commercial complex in Singapore Organizations Hub Culture , a social network that merges virtual and physical places Hub Strategy , American advertising agency Hubs , the name of the sports teams of Rochelle ... European University College Brussels Humboldt University of Berlin Other uses Hub magazine , a UK ... more details
TOCright The Hub may refer to Places The Hub , a nickname for Boston Boston, Massachusetts short for The Hub of the Universe The Hub Edinburgh , former church in Edinburgh which is now home to the Edinburgh International Festival The Hub, Bronx , an area of the South Bronx, known for its convergence of subway and bus lines The Hub Gainesville, Florida , historic building on University of Florida campus The Hub, Newcastle , a development in Newcastle Haymarket Hub National Centre for Craft & Design , Sleaford , Lincolnshire Husky Union Building , University of Washington The HUB ,a business center by Indiabulls In Mumbai In fiction The Hub, Headquarters of Torchwood Institute in Torchwood , a T.V. series on the BBC. The Hub Battlestar Galactica The Hub Battlestar Galactica , an episode from the science fiction series Battlestar Galactica . The Hub Discworld , the centre of the Discworld in the Discworld series by Terry Pratchett The Hub Fallout , land area in Fallout video game The Hub, name of the fictional cafe from That 70s Show The Hub, setting for several short stories and novels by science fiction writer James H. Schmitz In music The Hub band , a computer network music ensemble In television The Hub TV channel , an American cable television network co owned by Hasbro and Discovery Communications The Hub programme , a British news programme See also Hub disambiguation Disambig ... more details
Infobox Newspaper name The HUB image type Fortnightly Newspaper format Community Paper foundation 2009 owners Athena One Group price Free headquarters Tannochside Scotland editor website http www.thehubpaper.com www.thehubpaper.com Established in August 2009, The HUB Newspaper, is a free, full colour, local newspaper covering key community stories from towns across North and South Lanarkshire. The HUB only carries positive, good news stories from in and around Lanarkshire making The HUB Lanarkshire s best and favourite publication. Currently door dropped through letterboxes in Uddingston, Bothwell, Blantyre, Bellshill, Motherwell, Tannochside and Viewpark as well as being available for pickup in locations such as local supermarkets, libraries, cafe s, etc. The HUB has a circulation of 23,000 copies giving estimated readership figures of over 73,000 readers. It is expected that by the end of 2010 that HUB circulation will be well in excess of 30,000, confirming The HUB s place as Lanarkshire s largest publication. The HUB Group also incorporates the following titles, The Wishaw HUB and The Monklands HUB. The Wishaw HUB has a circa of 10,000 copies and The Monklands HUB also 10,000. Many more titles will follow throughout 2010 11 as the HUB continues to grow making it one of the leading publications across Scotland and the UK. Next target area s include The Falkirk HUB, Cumbernauld & Kilsyth HUB, Stirling County HUB and Lanark HUB. The HUB HQ is based at Suite 17. Ellismuir House. Ellismuir Way. Tannochside Park. G71 5PW. The HUB was launched by successful entrepreneurs Scott Mochar and Vicki O Hare as they looked for a new lifestyle business that they could grow and develop .... The pair are looking to grow the HUB across the whole of the UK through rapid expansion and acquisitions of other publications. External links http www.thehubpaper.com The Hub Paper DEFAULTSORT Hub Category Newspapers published in Scotland scotland newspaper stub ... more details
Industrial Ethernet IE is the name given to the use of Ethernet networking in an industrial engineering ... Ethernet for the needs of industrial processes, which must provide Real time computing real time behavior. By using standard Ethernet, automation systems from different manufacturers can be interconnected throughout a process plant. Industrial Ethernet takes advantage of the relatively larger marketplace for computer interconnections using Ethernet to reduce cost and improve performance of communications ... IT world of today. Advantages and difficulties Industrial Ethernet Protocols Until recently, a Programmable ... of Ethernet as the link layer protocol, with one of the above protocols as the application layer see ... switches , network hub hubs , cable s and optical fiber , which are immensely cheaper than the equivalent ... The difficulties of using Industrial Ethernet are Migrating existing systems to a new ... Managing a whole TCP IP stack is more complex than just receiving serial data The minimum Fast Ethernet ... than 5 , negating any advantages of the higher bitrate. On Gigabit Ethernet the minimum frame size is 512Bytes, reducing the typical efficiency to less than 1 . Some of the Industrial Ethernet protocols introduce modifications to the Ethernet protocol to improve efficiency. Main protocols class wikitable Serial Ethernet Protocol Network Standards Modbus RTU Modbus TCP TCP IP IEC 61158 and IEC ... , br from 100 Mbit s up to 1 Gbit s IEC 61158 and IEC 61784 DeviceNet CIP ControlNet CIP Ethernet ... Gbit s IEC 61158 and IEC 61784 http www.odva.org 10 2 03 events New EtherNet 03 ethernet Spec form.htm ODVA EtherNet IP standard Foundation Fieldbus H1 Foundation Fieldbus High Speed Ethernet HSE CANopen Ethernet Powerlink Ethernet 100Mbit s IEC 61158 , EPSG Ethernet Powerlink Standardization Group CANopen EtherCAT EtherCAT, EtherCAT UDP Ethernet 100Mbit s IEC 61158 , IEC PAS 62407, IEC 61784 3, ISO 15745 4 VARAN br br V ersatile A utomation R andom A ccess N etwork VARAN, TCP IP, Safety Ethernet ... more details
In computer network ing, Fast Ethernet is a collective term for a number of Ethernet standards that carry traffic at the nominal rate of 100 Mbit s, against the original Ethernet speed of 10 Mbit s. Of the fast Ethernet standards 100BASE TX is by far the most common and is supported by the vast majority of Ethernet hardware currently produced. Fast Ethernet was introduced in 1995 ref http ieeexplore.ieee.org ... the fastest version of Ethernet for three years before being superseded by gigabit Ethernet ... Gigabit Ethernet Standard was published ref General Design Fast Ethernet is an extension of the existing EthernetEthernet standard . It runs on UTP data or optical fiber cable and uses CSMA CD in a Star topology star wired bus topology , similar to 10BASE T where all cables are attached to a hub ... upgrades from 10BASE T. Fast Ethernet is sometimes referred to as 100BASE X where X is a placeholder ... that only Ethernet signals are carried on the medium. The TX , FX and T4 refer to the physical medium that carries the signal. A fast Ethernet adapter can be logically divided into a Media Access Control ... Interface RMII . Repeaters Network hub hubs are also allowed and connect to multiple PHYs for their different ... the theoretical maximum data bit rate for all versions of fast Ethernet to 100 Mbit s. The data signaling ... Fast Ethernet standards for twisted pair cable s, including 100BASE TX 100 Mbit s over two pair ... Ethernet . All are or were standards under IEEE 802.3 approved 1995 . Almost all 100BASE T installations are 100BASE TX. In the early days of Fast Ethernet, much vendor advertising centered on claims ... megabit Ethernet was very tolerant of minor deviations from specified electrical characteristics and few installers ever bothered to make exact measurements of cable and connection quality if Ethernet ... Wire brown.svg 60px Pair 4 Wire 2 brown 100BASE TX is the predominant form of Fast Ethernet, and runs ... connected to a Network hubhub or Network switch switch , creating a star network . Alternatively ... more details
No footnotes date February 2009 Merge Carrier Ethernet date June 2009 COI date May 2010 A Metro Ethernet is a computer network that covers a metropolitan area and that is based on the Ethernet standard ... service network or the Internet . Businesses can also use Metro Ethernet to connect branch offices to their Intranet . Ethernet has been a well known technology for decades. An Ethernet interface ... PDH interface of the same bandwidth. Ethernet also supports high bandwidths with fine granularity ... distinct advantage of an Ethernet based access network is that it can be easily connected to the customer network, due to the prevalent use of Ethernet in corporate and, more recently, residential networks. Therefore, bringing Ethernet in to the Metropolitan Area Network MAN introduces a lot of advantages ... June 2009 Image Optical Metro 5200.jpg 300px thumb right Metro Ethernet system A typical service provider Metro Ethernet network is a collection of Layer 2 or and Network Layer Layer 3 Network switch ... network ring , hub and spoke star , or full or partial Mesh networking mesh . The network will also ... of Ethernet Transport in the form of 10G or 100 Gigabit Ethernet 100G speeds. Ethernet on the MAN can be used as pure Ethernet, Ethernet over SDH, Ethernet over MPLS or Ethernet over Wavelength division multiplexing Dense WDM DWDM . Pure Ethernet based deployments are cheap but less reliable and scalable ... service providers. Pure Ethernet MANs A pure Ethernet MAN uses only layer 2 switches for all ... simple initial configuration. The original Ethernet technology was not well suited for service provider ... implementation of private circuits impossible. Ethernet MANs became feasible in the late 90s due to the development ... from each other and from the core network internal signaling traffic. However, Ethernet is constantly .... There are three main shortcomings with a pure non PBT PBB enabled Ethernet MAN approach By design ... to support the MAC table limitations of the equipment. In a pure ethernet network, the network should ... more details
Ethernethubhub s are allowed by the specification but in the marketplace Duplex telecommunications ... Ethernet GbE or 1 GigE is a term describing various technologies for transmitting Ethernet frame ... The result of research done at Xerox Corporation in the early 1970s, Ethernet has evolved into the most ... today. Fast Ethernet increased speed from 10 to 100 megabits per second Mbit s . Gigabit Ethernet was the next iteration, increasing the speed to 1000 Mbit s. The initial standard for gigabit Ethernet ... , ratified in 1999, defines gigabit Ethernet transmission over Shielded cable unshielded twisted ... T. With the ratification of 802.3ab, gigabit Ethernet became a desktop technology as organizations ... extension and 1000BASE BX10. This was part of a larger group of protocols known as Ethernet in the First Mile . Initially, gigabit Ethernet was deployed in high capacity backbone network links for instance ... Gigabit Ethernet publisher apple history.com accessdate 2007 11 05 ref It quickly became a built in feature ... in almost all desktop and server computer systems. Higher bandwidth 10 Gigabit Ethernet ... pair standard in 2006. As of 2009 10Gb Ethernet is replacing 1Gb as the backbone network and has ... physical layer standards for gigabit Ethernet using optical fiber 1000BASE X , twisted pair ... to keep the symbol rate as low as possible, allowing transmission over twisted pair. Ethernet in the First ... Ethernet transmission over fiber, where options include 1000BASE CX, 1000BASE LX, and 1000BASE SX, 1000BASE ... standard for gigabit Ethernet connections over twinaxial cabling with maximum distances of 25 ... where cabling is done by IT professionals, for instance the IBM BladeCenter uses 1000BASE CX for the Ethernet ... it for general copper wiring use. 1000BASE SX 1000BASE SX is a fiber optic gigabit Ethernet standard ... sensitivity 17 dBm. 1000BASE LX 1000BASE LX is a fiber optic gigabit Ethernet standard specified ... was standardized six years after the initial gigabit fiber versions as part of the Ethernet in the First ... more details
Terabit Ethernet or 1TbE is a phrase used in current media to describe the next possible speed of Ethernet above 100 Gigabit Ethernet speeds. Facebook is one of a few companies that has expressed a need for 1TbE. ref cite web first Michael last Feldman url http www.hpcwire.com blogs Facebook Dreams of Terabit Ethernet 83504497.html title Facebook Dreams of Terabit Ethernet date Feb. 3, 2010 work HPCwire publisher Tabor Communications, Inc. ref Some think that 400 Gigabit Ethernet is a more practical goal. ref cite web url http www.lightreading.com document.asp?doc id 188442& title Dare We Aim for Terabit Ethernet? work Light Reading publisher UBM TechWeb, first Craig last Matsumoto date Mar. 5, 2010 ref See also Ethernet Alliance 10 Gigabit Ethernet 100 Gigabit Ethernet Optical interconnect Interconnect bottleneck Optical fiber cable Optical communication Parallel optical interface Notes references External cite web url http insidehpc.com 2009 04 03 terabit ethernet on the way title Terabit Ethernet on the way date Apr. 3, 2009 first John last West work insideHPC cite web url http www.theregister.co.uk 2009 02 16 terabit ethernet optics title Terabit Ethernet possibilities date Feb. 15, 2009 first Chris last Mellor work The Register cite web url http nextbigfuture.com 2008 04 terabit ethernet around 2015.html title Terabit Ethernet around 2015 date Apr. 24, 2008 first Brian last Wang cite web url http www.networkworld.com news 2009 042009 terabit ethernet.html title 100 Gigabit Ethernet Bridge to Terabit Ethernet date Apr. 20, 2009 first Jim last Duffy work Network World cite web url http arstechnica.com science news 2009 02 terabit ethernet becomes a photonic possibility.ars title Terabit Ethernet becomes a photonic possibility date Feb. 13, 2009 first Glenn last Fleishman work Ars Technica publisher Cond Nast Category Ethernet ... more details
The Ethernet Alliance was incorporated in the state of California in August 2005 and officially launched in January 2006 as a global non profit industry consortium to promote and support Ethernet . The objectives ... the development of standards that support Ethernet technology and to bring together the Ethernet industry to collaborate on the future of the technology. The Ethernet Alliance is a member driven organization of Ethernet end users, system and component vendors, industry experts, and university and government professionals who are committed to the continued success and expansion of Ethernet. The Ethernet ... are focused on efforts around specific standards based Ethernet initiatives. These standards can be developed in any Ethernet standards body, including but not limited to the Institute ... by members as those specific Ethernet technology areas where work needs to be done to help support ... subcommittees within the Ethernet Alliance include 10G EPON focuses on the support of IEEE Std ... 2006 which defined a specification for running 10 Gigabit Ethernet over twisted pair copper designated 10GBASE T. Carrier Ethernet helps guide work being done to support the specific, evolving and growing demands of Ethernet from carriers and service providers. Energy Efficient Ethernet EEE work is largely based up EEE Std. 802.3az 2010. Ethernet in the Data Center focus includes protocols such as Data Center Bridging DCB , Fibre Channel over Ethernet FCoE , iSCSI , RDMA over Converged Ethernet RoCE and iWARP . Higher Speed Ethernet HSE encompasses all aspects of 40 Gb s and 100 Gb s Ethernet ... that information via a white paper with Ethernet Alliance members and standards bodies. Power over Ethernet PoE and Power over Ethernet Plus PoE promotes the current capabilities of IEEE802.3at ... resiliency capabilities of IEEE802.3at in the Ethernet community. High Speed HS Modular Interconnects ... devices and ports including optical modules and copper cables. History In previous Ethernet technology ... more details
Ethernet Exchange is a physical network infrastructure through which Ethernet service providers, carriers and Internet service providers exchange Ethernet traffic between their networks. The Ethernet exchange was created as a neutral meeting place where wireless carriers can connect to multiple Ethernet services in several markets that need access to specific locations though one connection. As service providers and operators continue to grow, they need a network to support the increasing amount of Data and video on mobile networks. Thus, allowing Ethernet sellers connecting to an Ethernet exchange immediate access to the buyers and a more basic technical process. Ethernet exchanges offer an accelerated system for carriers and worldwide service providers to extend market reach and coverage. Many carriers and service providers have adopted this technology due to the refined administration features and lower costs when compared to older wholesale Ethernet interconnectivity solutions. References See http en.wikipedia.org wiki Wikipedia Footnotes on how to create references using ref ref tags which will then appear here automatically Reflist Cite web url http www.expereo.com en services title Expereo starts Global Ethernet eXchange GEX . publisher Alphons Mulders accessdate January, 1st, 2011 last first Cite web url http www.fiercetelecom.com story mef standardization drives development ethernet business services 2010 06 21 title MEF standardization drives development of Ethernet ... document.asp?doc id 192767 title Telx Adds an Ethernet Exchange publisher Craig Matsumoto ... 04 12 equinix launches carrier ethernet exchange title Equinix Launches Carrier Ethernet Exchange ... story neutral tandem enters ethernet exchange fray 2010 02 18 title Neutral Tandem enters the Ethernet ... 2009 11 cenx joins ethernet exchange party title CENX Joins Ethernet Exchange ... index.php compu network stub Categories Category Ethernet Category Network topology ... more details
Multiple issues refimprove February 2009 jargon November 2009 Merge Metro Ethernet date June 2009 Carrier Ethernet the extensions to Ethernet necessary to enable telecommunications network providers common carriers in US industry jargon to provide Ethernet services to customers and to utilize Ethernet technology in their networks. Background Ethernet has a long his history. It has become dominant in enterprise ..., traditionally growing by ten times each time a new rate is defined. Gigabit Ethernet interfaces ... 40Gb s and 100Gb s Ethernet Task Force http ieee802.org 3 ba ref and IEEE P802.3bg ref IEEE P802.3bg 40G SMF PMD for Carrier Client Task Force http www.ieee802.org 3 40GSMF ref . Ethernet s dominance ... have been created to access higher speed devices than contemporary Ethernet connected devices handled ... standards has been to drive down the price of the comparable speed Ethernet devices. Once this is done, competing standards tend to disappear or be confined to very specialized niches. Ethernet is a fairly ... are being added to IEEE 802.3 Ethernet to support IEEE 802.1 audio video bridging AVB ref IEEE ... and 100G Ethernet are relatively expensive per unit bandwidth and not yet deployed in small home office ... networks over Ethernet interfaces or to devices that bridge DSL or wireless to these. Moreover, customers are familiar with the capabilities of Ethernet networks, and would like to extend these capabilities ... needs To provide their customers with Ethernet services To make use of the volume and cost advantages of Ethernet technologies in their networks To replace non Ethernet technologies with Ethernet competitors ... and pay close attention to Quality of Service QoS . Carrier Ethernet services To create a market in Ethernet services, it is necessary to clarify and standardise the services to be provided. Recognising this, the industry created the Metro Ethernet Forum http www.metroethernetforum.org . This played a key role in defining E line a service connecting two customer Ethernet ports over a WAN. Not to be confused ... more details
Cleanup spam date August 2010 Refimprove date August 2007 Context date October 2009 EtherNet IP Ethernet ... automation applications. EtherNet IP is an application layer protocol and it considers all the devices on the network as a series of objects . EtherNet IP is built on the widely used Common Industrial Protocol CIP , which makes seamless access to objects from controlNet and DeviceNet networks. EtherNet IP makes use of existing network infrastructure Ethernet and the entire EtherNet IP stack can be implemented ... circuit s or Field Programmable Gate Array s are required for implementing EtherNet IP. EtherNet ... EtherNet IP makes use of Ethernet for physical layer, it becomes easier to tightly couple Enterprise ... Ethernet physical layer progresses, EtherNet IP will benefit indirectly. So, as the Ethernet physical layer technology advances from 10 100 Mbit s to 1 Gbit s, EtherNet IP data transfers also get faster. EtherNet IP can be used in automation networks which can tolerate some amount of non determinism. This is because Ethernet physical media, by definition, is not deterministic. EtherNet IP can be easily confused as a combination of Ethernet the physical layer, link, or medium used in most ..., EtherNet IP is an industrial application layer protocol operating over the Ethernet medium and used ... controller , programmable logic controller or an I O system. Furthermore, the IP in EtherNet ... to Rockwell s adoption of Common Industrial Protocol Common Industrial Protocol standards as EtherNet ... , EtherNet IP, at the application layer, operates over both Ethernet at the physical layer and IP at the network layer and thus complements each of these technologies. History EtherNet IP was developed in the late 1990s by Rockwell Automation as part of Rockwell s industrial Ethernet networking solutions. With little or no input taken from other ODVA members, Rockwell gave EtherNet IP its moniker ... are developed. Today, EtherNet IP is most commonly used in industrial automation settings e.g. ... more details
Unlike Time division multiplexing TDM networks, Ethernet does not carry synchronization information. Several means are defined to address this issue. IETF s NTP, PTP Precision Time Protocol IEEE 1588 are some of them. ITU T G.8262 Y.1362 defined another approach for synchronization. External links http grouper.ieee.org groups 1394 c 20031216 Sync Ethernet 039a draft.pdf IEEE white paper http www.itu.int rec T REC G.8262 ITU T G.8262 http www.itu.int rec T REC G.803 ITU T G.803 http www.itu.int rec T REC G.813 ITU T G.813 http www.embedded.com 215600261?cid NL embedded An introduction to Synchronized Ethernet Compu network stub Category Ethernet Category Network protocols Category Synchronization ... more details
Ethernet POWERLINK is a Deterministic algorithm deterministic real time protocol computing protocol for standard Ethernet . It is an open protocol managed by the Ethernet POWERLINK Standardization Group ... with power distribution via Ethernet cabling or power over Ethernet PoE , power line communication or Bang & Olufsen Bang & Olufsens PowerLink cable. Overview Ethernet POWERLINK was created taking care of standard compliance. It expands Ethernet with a mixed Polling and Timeslicing mechanism. That brings ... POWERLINK is standardized by the opened user and producer group EPSG Ethernet POWERLINK Standardization ... focus is to leverage the advantages of Ethernet for high performance Real Time networking systems based on the Ethernet POWERLINK Real Time protocol, introduced by B&R end of 2001. Various working ... was 100Base X Fast Ethernet IEEE 802.3 . Since end of 2006 Ethernet Powerlink with Gigabit Ethernet ... systems, numerous drives and completely integrated security equipment. Gigabit Ethernet is on the threshold ... better cable Cat6 must be used. The transition to higher speed Ethernet variants is always possible since Ethernet Powerlink is also attached as a standard Ethernet design and can launch its applications ... within the Real time domain is recommended to minimise delay and jitter. Ethernet Powerlink uses IAONA s Industrial Ethernet Planning and Installation Guide for clean cabling of industrial networks and both industrial Ethernet connectors 8P8C RJ45 and M1 are accepted. Data Link Layer The Standard Ethernet Data Link Layer of Ethernet Powerlink is extended by an additional bus scheduling ..., usually present on Standard Ethernet . The Carrier Sense Multiple Access CSMA CD mechanism of standard Ethernet, which causes non deterministic Ethernet behaviour, is deactivated by the collision avoidance mechanism of the Ethernet Powerlink scheduling mechanism. Basic Cycle After system ... 1.png Picture 3 Time slots in EPL multiplexed mode. Ethernet Powerlink Safety Today, machines, plants ... more details
A data packet on an Ethernet link is called an Ethernet frame . A frame begins with Preamble and Start Frame Delimiter. Following which, each Ethernet frame continues with an Ethernet header featuring ... sniffing software because these bits are stripped away at OSI Layer 1 by the Ethernet adapter ... Ethernet frame, as transmitted, for the maximum transmission unit MTU of 1500 octet computing octets some implementations of gigabit Ethernet and higher speeds support larger jumbo frame s . ref ..., with the first bit transmitted on the left not as byte values, which in Ethernet are transmitted ... align center 802.3 Ethernet frame structure Preamble Start of frame delimiter MAC destination MAC source ... the next frame. Ethernet frame types There are several types of Ethernet frames. The different ... medium. The Ethernet Version 2 ref group note A version 1 Ethernet frame was used for early Ethernet prototypes and featured 8 bit MAC addresses and was never commercially deployed. ref or Ethernet ... Control LLC frame Subnetwork Access Protocol SNAP frame In addition, all four Ethernet frames types ... by the rest of the frame, using one of the types described above. Ethernet II Ethernet II framing also known as DIX Ethernet , named after Digital Equipment Corporation DEC , Intel and Xerox , the major ... the two octet EtherType field in an Ethernet Frame telecommunications frame , preceded by destination ... to a data length field in the new 802.3 standard. ref group note Original Ethernet packets define their length ..., both formats are in wide use, Citation needed date March 2011 with original Ethernet framing the most common in Ethernet local area networks, due to its simplicity and lower overhead. In order to allow some packets using Ethernet v2 framing and some packets using the original version of 802.3 framing to be used on the same Ethernet segment, EtherType values must be greater than or equal to 1536 0x0600 . That value was chosen because the maximum length of the data field of an Ethernet 802.3 ... more details
An Ethernet extender also network extender is any device used to extend an Ethernet segment beyond its normal distance limitation which is approximately Convert 100 m for most common forms of twisted pair Ethernet . These devices employ a variety of transmission technologies and physical media copper wire, fiber optic cable, coaxial cable . Extenders that use copper wire include 2 and 4 wire variants using unconditioned copper wiring to extend a LAN s. Network extenders use various methods line encodings , such as TC PAM , 2B1Q or Discrete multitone modulation DMT , to transmit information. While transmitting over copper wire does not allow for the speeds that fiber optic transmission does, it allows the use of existing voice grade copper or CCTV coaxial cable wiring. Copper based Ethernet extenders must be used on unconditioned wire, ie without load coil s, such as unused twisted pairs and alarm circuit s. RF vs. Fiber optic vs. Wire Cable Connecting a private LAN between buildings or more distant locations is a challenge. WiFi requires a clear line of sight, special antennas, and is subject to weather. If the buildings are within 100m, a normal Ethernet cable segment can be used, with due consideration of potential grounding problems between the locations. Up to 200m, it may be possible to set up an ordinary Ethernet router in the middle, if power and weather protection can be arranged. Fiber optic connection is ideal, allowing connections of over a km and high speeds with no electrical shock or surge issues, but is technically specialized and expensive for both the end equipment interfaces and the cable. Damage to the cable requires special skills to repair or total replacement ... LRE Long Reach Ethernet , Patton CopperLink or EtherWAN Ethernet Extenders using VDSL technology ... standardized as Ethernet in the First Mile 2BASE TL Full duplex long reach Point to point communication ... pair. compu network stub Category Local loop Category Ethernet ... more details
Infobox Mobile phone name Verizon Hub image imagesize slogan Welcome to the home phone reinvented manufacturer carrier Verizon Wireless available February 1st, 2009 ref http www.engadget.com 2009 01 23 verizon hub landline slayer officially unveiled ref discontiued September 29th, 2009 ref http www.gearlog.com 2009 09 rip verizon hub 2009 2009.php ref screen 7 WVGA LCD screen 800 x 480 pixels at 16 bit color with alpha blending. camera operatingsystem input cpu 500 MHz Dual MicroPro Processor memory ... 100 Ethernet Port 1 802.11b g wireless client interface 802.1x connectivity support for WEP, WPA, WPA2 and QoS networks VoiP form size 9 x 12 x 0.5 weight 1.5 lbs. The Verizon Hub was a media phone available from Verizon Wireless. It features a 7 inch LCD screen at 16 bit color. The hub could sync ... b2c vzhub techspec.jsp ref The Verizon Hub did not require the owner to have Verizon Fios . ref http news.vzw.com news 2009 01 pr2009 01 23a.html ref The hub connected to a wireless network and features a wireless handset and speakerphone. The hub allowed users to send text and photo messages, but only ... technology, users could also set the hub to forward calls to another phone number if there is a power ... title http g4tv.com attackoftheshow gadgetpr0n 66580 Verizon Hub Review.html Review of Verizon Hub ... Some of the features of the Verizon Hub were Anonymous Call Blocking Call Logs Scheduled Call ... on the Verizon Hub. Calendar Alerts can also be sent as a text message to any Verizon Wireless ..., family and businesses. Contact list entries are synchronized between the Verizon Hub, Verizon Hub handsets and the Verizon Hub Web management site for quick and easy access. Movie Listings, Show ... movie tickets directly from the Verizon Hub s touch screen. Ringtones Customize the Verizon Hub with a selection of free embedded ringtones. Traffic Get current video reports of slowdowns and accidents ... images?q tbn A3vUNuSx90OEM http robulack.files.wordpress.com 2009 02 verizon hub application ... more details
Orphan date February 2009 A reliever airline hub is an airline hub that serves to relieve congestion at primary hubs. Examples of reliever hubs include Cleveland Hopkins International Airport for Continental Airlines and Cincinnati Northern Kentucky International Airport for Delta Air Lines . See also Airline hub Fortress hub List of hub airports Focus city Former airline hubs Point to point transit External links Category Airline terminology Category Airport terminology ... more details
Infobox venue name The Hub image File The verwood hub logo.jpg image caption The Hub location Verwood , Dorset genre opened 2007 seating capacity 300 Merryfield Theatre br 260 Classroom owner East Dorset County Council promotions website http www.thehubverwood.co.uk www.thehubverwood.co.uk The Hub also known as The Verwood Hub is a multi purpose venue based in Verwood , Dorset . The Hub opened in 2007, and hosts a range of live music, theatre, art, conferences and workshops. ref http thehubverwood.co.uk the hub.php ref Management of The Hub building was formally handed over by East Dorset District Council on Monday, 12 March 2007, and an exciting programme of events has evolved featuring cinema, theatre, live performances ranging from Abba Arrival to Verwood Concert Brass and a range of classes and workshops for adults and children. References Reflist External links http thehubverwood.co.uk index.php The Hub Official Website Category Theatres in Dorset ... more details
Hub Dam lang ur is a large water storage reservoir constructed in 1981 on the Hub River on the arid plains north of Karachi . It is located on the provincial border between Balochistan Pakistan Balochistan and Sindh Sindh, Pakistan . The reservoir supplies water for irrigation in Lasbela District of Balochistan and drinking water for the city of Karachi. ref name ramsar http www.ramsar.org wn w.n.pakistan eightnew.htm ref The dam is an important staging and wintering area for an appreciable number of waterbirds and contains a variety of fish species which increase in abundance during periods of high water. The Mahseer Tor putitora , an indigenous riverine fish found in the Hub River, can grow up to convert 9 ft m in length and more than 110 lbs. ref name ramsar The Hub reservoir can grow up to convert 32 sqmi km2 and provides for angling . Hub Dam was designated a Ramsar site on May 1, 2001. ref name ramsar See also Hub, Balochistan Hub City Hub Dam Wildlife Sanctuary References Reflist External links http www.iucn.org places pakistan wetlands article6.htm Wetlands of Pakistan coord missing Pakistan Protected areas of Pakistan Category Lasbela District Category Dams in Pakistan Category Ramsar sites in Pakistan asia dam struct stub pakistan struct stub tr Hub Dam ... more details
Hub is a UK based, online, speculative fiction magazine. It is published in PDF and mobipocket format. Each issue contains one or two stories, and a range of reviews and other articles. Hub started in 2006 as a print magazine, but the overheads of print proved too great, and Hub moved online. Hub has published authors like Jetse de Vries , Marianne de Pierres , Ian Whates and Mur Lafferty . citation needed date October 2009 Hub claims near 10,000 subscribers ref Cite web url http www.hubfiction.com about title About Hub Magazine publisher Hub website accessdate 2009 10 24 ref via email, and issues can also be downloaded from its official website. In April 2010 Hub released a Doctor Who Special Issue 116 which collected new articles and pieces from various writers associated with both Classic and New Series Doctor Who , including Andrew Cartmel, Paul Magrs, Joseph Lidster, Mark Morris, Simon Clarke and Scott Harrison who also guest edited the issue References reflist External links official http www.hubfiction.com BritishMagazines DEFAULTSORT Hub Magazine Category British science fiction magazines Category Magazines established in 2006 UK lit mag stub fiction mag stub webzine stub ... more details
The Hub is an United States American computer network music ensemble consisting of John Bischoff musician John Bischoff , Tim Perkis , Chris Brown composer Chris Brown , Scot Gresham Lancaster , Mark Trayle and Phil Stone . The Hub grew from the League of Automatic Music Composers John Bischoff musician John Bischoff , Tim Perkis , Jim Horton , and Rich Gold . Perkis and Bischoff modified their equipment to allow more musicians and founded The Hub. They have collaborated with Rova Saxophone Quartet and Alvin Curran . They currently perform around the world after a hiatus. Discography The Hub 1989, Artifact ART 1002 Wreckin Ball 1994, Artifact ART 1008 . The Hub Boundary Layer 2008, Tzadik 3cd box set External links http crossfade.walkerart.org brownbischoff Indigenous to the Web Early Network Bands in the San Francisco Bay Area US electronic band stub DEFAULTSORT Hub Category American electronic music groups ... more details
Image Hub Front.jpg 250px thumb The spire of the building Image Edinburgh Royal Mile01.jpg thumb The Hub as viewed from the Lawnmarket during the Edinburgh Festival . Image The Hub, Edinburgh.jpg thumb The Hub from the Museum of Scotland The Hub , at the top of Edinburgh s Royal Mile , is the home of the Edinburgh International Festival , and a central source of information on all the Edinburgh Festival s. Its Gothic architecture gothic spire the highest point in central Edinburgh towers over the surrounding buildings, including the adjacent Edinburgh Castle castle . The building was designed in collaboration by Edinburgh architect James Gillespie Graham J Gillespie Graham , and the famous gothic revival ist Augustus Pugin , and constructed between 1842 and 1845. The inside houses the Hub Cafe http www.hubtickets.co.uk Hub Tickets , the central box office for the International Festival, which also sells tickets for a wide range of other events a Main Hall with a capacity of 420, used as a venue for concerts and so on and two smaller venues, the Glass Room and the Dunard Library, suitable for smaller events. Prior to the completion of the new Scottish Parliament Building at Holyrood in 2004, the Hub was occasionally used for meetings of the Scottish Parliament when the Church of Scotland s General Assembly Hall was unavailable. The Parliament returned to the Hub for two weeks following ... is now The Hub was built for the Church of Scotland both as a parish church and as a purpose built ... unused until becoming The Hub . See also Old Town, Edinburgh External links commonscat inline The Hub http www.thehub edinburgh.com The Hub s home page http www.benjamintindallarchitects.co.uk Projects Pages edinburgh and the borders.htm A J Youngson on The Hub coord 55 56 56.32 N 3 11 40.73 W display title DEFAULTSORT Hub Category Buildings and structures in Edinburgh Category Royal Mile Category ... buildings Category 1845 architecture Category 19th century in Scotland de The Hub Edinburgh ... more details
Encyclopedia
top
