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Topic: Fiber distributed data interface


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In the News (Fri 24 May 19)

  
  Fiber Distributed Data Interface (FDDI)
The Fiber Distributed Data Interface (FDDI) specifies a 100-Mbps token-passing, dual-ring LAN using fiber-optic cable.
Data continues to be transmitted on the FDDI ring without performance impact during the wrap condition.
The Fiber Distributed Data Interface (FDDI) specifies a 100-Mbps token-passing, dual-ring LAN architecture using fiber-optic cable.
www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/fddi.htm   (2171 words)

  
  Fiber distributed data interface: Definition and Links by Encyclopedian.com - All about Fiber distributed data ...
In computer networking, Fiber distributed data interface (FDDI) ia a 100 Mbit/s ANSI standard local area network architecture, defined in X3T9.5.
The underlying medium is optical fibre (though it can be copper cable, in which case it may be called CDDI) and the topology is a dual-attached, counter-rotating token ring.
The data rate of an FDDI ring may be doubled to 200 Mb/s, with loss of redundancy.
www.encyclopedian.com /fd/FDDI.html   (397 words)

  
 Encyclopedia: Fiber distributed data interface   (Site not responding. Last check: 2007-10-12)
Data transmission is, very generally speaking, the conveyance of any kind of information from one space to another.
In the field of telecommunications, a communications protocol is the set of standard rules for data representation, signalling, authentication, and error detection required to send information over a communications channel.
Fiber Optic strands An optical fiber in American English or fibre in British English is a transparent thin fiber for transmitting light.
www.nationmaster.com /encyclopedia/Fiber-distributed-data-interface   (1655 words)

  
 Fiber Distributed Data Interface (FDDI)   (Site not responding. Last check: 2007-10-12)
The Fiber Distributed Data Interface (FDDI) specifies a 100-Mbps token-passing, dual-ring LAN using fiber-optic cable.
A mode is a ray of light that enters the fiber at a particular angle.
Data continues to be transmitted on the FDDI ring without performance impact during the wrap condition.
www.yars.free.net /CiscoCD/cc/td/doc/cisintwk/ito_doc/fddi.htm   (2067 words)

  
 FDDI: Fiber Distributed Data Interface
Fiber Distributed Data Interface (FDDI) is a set of ANSI protocols for sending digital data over fiber optic cable.
The dual rings consist of a primary and a secondary ring.
During normal operation, the primary ring is used for data transmission, and the secondary ring remains idle.
www.javvin.com /protocolFDDI.html   (465 words)

  
 Troubleshooting Fiber Distributed Data Interface
The Fiber Distributed Data Interface (FDDI) standard was produced by the ANSI X3T9.5 standards committee in the mid-1980s.
Optical fiber offers several advantages over traditional copper wiring, including security (fiber does not emit electrical signals that can be tapped), reliability (fiber is immune to electrical interference), and speed (optical fiber has much higher throughput potential than copper cable).
Because multiple modes of light propagating through the fiber may travel different distances (depending on the entry angles), causing them to arrive at the destination at different times (a phenomenon called modal dispersion), single-mode fiber is capable of higher bandwidth and greater cable run distances than multimode fiber.
www.pluscom.ru /cisco_product/cc/td/doc/cisintwk/itg_v1/tr1905.htm   (3909 words)

  
 [No title]   (Site not responding. Last check: 2007-10-12)
This formation, the primary data situation is shown in the path descends down each WRAP A STATE area of Figure branch of the tree passing 3.
data link interface It was important for that allows the use of Digital to understand transmit and receive fibers migration of current between devices.
This of connecting new stations, translation, coupled with it is inconvenient to a stiff requirement for map a ring topology into data integrity for the star wiring, which is MAC bridging standard well known and widely IEEE 802.1d and the used for its convenience performance needs of and manageability.
www.research.compaq.com /wrl/DECarchives/DTJ/DTJ201/DTJ201SC.TXT   (4124 words)

  
 Fiber distributed data interface - Wikipedia, the free encyclopedia
In computer networking, fiber-distributed data interface (FDDI) is a standard for data transmission in a local area network that can extend in range up to 200 km (124 miles).
The FDDI protocol is based on the token ring protocol.
If the secondary ring is not needed for backup, it can also carry data, extending capacity to 200 Mbit/s.
en.wikipedia.org /wiki/Fiber_distributed_data_interface   (536 words)

  
 COMP 730 - FDDI: Fiber Distributed Data Interface
Fiber optic cable is referred to by the diameters of its core and cladding, for example, 50/100 micron, 62.5/125 micron, and 100/40 micron.
Single-mode fiber uses a laser as its light source, and stations may be up to 20 km apart.
This is known as a redundant topology, and it is used in environments where uptime is critical in the event of a station or cable failure.
www.technology.niagarac.on.ca /courses/comp730/FDDI.html   (884 words)

  
 Fiber Data Distributed Interface (FDDI)
The 'B' port is the primary connection, and the 'A' port is used only in case the B port fails.
Data travels around the rings in opposite directions, but both rings are rarely used.
The FDDI controllers on either side of the broken link then send their A links into 'wrap' mode and forward the data over the A chain of links, restoring connectivity to the severed station.
www.inetdaemon.com /tutorials/lan/fddi   (403 words)

  
 [No title]   (Site not responding. Last check: 2007-10-12)
In addition to asynchronous data (which is generated at random time intervals), FDDI rings can also support the transmission of synchronous data (for example, digitized voice).
All data to be transmitted is encoded prior to transmission using a 4 of 5 group code This means that for each 4 bits of data a corresponding 5 bit code word or symbol is generated by the encoder.
Unlike the basic Token Ring, which is based on the use of priority and reservation bits, the priority operationof the FDDI ring uses a principle that is based on a parameter known as the Token Rotation Time (TRT).
www2.rad.com /networks/1995/fddi/fddi.htm   (843 words)

  
 Fiber Distributed Data Interface Service   (Site not responding. Last check: 2007-10-12)
The dual token-passing ring architecture of FDDI protects against downtime because data always has two paths: a primary path, and a secondary path that acts as back up for disaster recovery.
Fiber Distributed Data Interface (FDDI) Service provides dedicated private lines between local area networks (LANs) or other devices needing high-speed connections.
FDDI carries data at a speed of 100 megabits per second (Mbps), making it a high-performance data transmission solution.
www.phone-place.com /pvdfddi.htm   (466 words)

  
 TC Communications - Your source for fiber media converters, fiber modems, multiplexers fiber ethernet switches...
TC Communications - Your source for fiber media converters, fiber modems, multiplexers fiber ethernet switches...
fiber modem, fiber modems, fiber mux, fiber modems, fiber multiplexer, fiber converter, fiber converters, fiber transceivers, telephone fiber
fiber modem, fiber modems, fiber mux, fiber modems, fiber multiplexer, fiber converter, fiber converters, fiber transceivers
www.tccomm.com   (261 words)

  
 Fiber Distributed Data Interface (FDDI/FDDI-II) : A  LAN technology with a transmission rate of 100 Mbit/s.   (Site not responding. Last check: 2007-10-12)
Fiber Distributed Data Interface (FDDI/FDDI-II) : A LAN technology with a transmission rate of 100 Mbit/s.
FDDI is a LAN technology that support a transmission rate of 100 Mbit/s.
It is based on optical fiber as transmission medium.
pages.infinit.net /celeb/Fddi.htm   (96 words)

  
 Citations: An overview of FDDI: The Fiber Distributed Data Interface - Ross (ResearchIndex)   (Site not responding. Last check: 2007-10-12)
Performance of the presented scheme which is obtained from computer simulation is shown in section 4 and applicability of the scheme to the CLSF application is investigated in section 5.
F.E. Ross, "An Overview of FDDI: the fiber distributed data interface," IEEE J. Sel.
The DQDB protocol [83] is a reservation access scheme employing two unidirectional channels (data on one channel flows in the opposite direction from the other channel) A protocol strategy called attempt and defer is most closely related to our work.
citeseer.lcs.mit.edu /context/5664/0   (4067 words)

  
 Fiber Distributed Data Interface
Single-mode fiber allows only one mode of light to propagate through the fiber, while multimode fiber allows multiple modes of light to propagate through the fiber.
Due to these characteristics, single-mode fiber is often used for interbuilding connectivity, while multimode fiber is often used for intrabuilding connectivity.
The primary ring is used for data transmission, while the secondary ring is generally used as a backup.
www.ba-stuttgart.de /~schulte/htme/55773.htm   (1707 words)

  
 InterOperability Laboratory: Technologies: FDDI: Knowledge Base
DDI (Fiber Distributed Data Interface) has found its niche as a reliable, high-speed backbone for mission critical and high traffic networks.
FDDI was designed to run through fiber cables, transmitting light pulses to convey information between stations, but it can also run on copper using electrical signals.
A secondary ring provides an alternate data path in the event a fault occurs on the primary ring.
www.iol.unh.edu /training/fddi/htmls   (174 words)

  
 FDDI   (Site not responding. Last check: 2007-10-12)
Priority levels of a data frame and token can be set to allow servers to send more data frames.
Time sensitive data may also be given higher priority.
The primary ring is normally used, but if the nearest downstream neighbor stops responding the data is sent on the secondary ring in attempt to reach the computer.
www.comptechdoc.org /independent/networking/cert/netfddi.html   (292 words)

  
 Healthcare Informatics: The Latest Word   (Site not responding. Last check: 2007-10-12)
Signals are sent between each portion of data so the sending computer knows when the receiving computer is ready for the next data stream.
Although an ISDN line is slower than a fiber distributed data interface, it's faster than a standard telephone line and is a popular way to connect local area networks.
Like a track-switching point in a railyard, the switch allows a user to choose where data is to be sent--to the FAX machine instead of the printer, or to the network instead of the FAX machine.
www.healthcare-informatics.com /issues/1998/01_98/glossary.htm   (9141 words)

  
 FDDI
The fiber optic media can be multimode fiber and can be as large as 100 kilometers - with no more than 2 kilometers between nodes.
On class A devices, all fiber connections will be on a dual counter-rotating rings, (which are on independent fiber cables).
One cost-effective way to approach cabling for FDDI is to implement a staged, hybrid solution, with fiber as the backbone and copper for the local loop from the FDDI concentrators to the desk top.
www.arcelect.com /fddi.htm   (513 words)

  
 Glossary
The underlying medium is often optical fiber and the topology is a dual-attached, counter-rotating token ring.
If one instance modifies a data block that another instance needs, then whether a forced disk write is required depends on the type of request submitted for the block.
Should a failure prevent modified data from being permanently written to the datafiles, the changes can be obtained from the redo log and work is never lost.
www.cs.uvm.edu /oracle9doc/rac.901/a89867/glossary.htm   (5712 words)

  
 Fiber Distributed Data Interface   (Site not responding. Last check: 2007-10-12)
Fiber Distributed Data Interface (FDDI) Token Ring/IEEE 802.5.
Fiber Distributed Data Interface This paper from Cisco provides background information about FDDI technology, explains how FDDI works...
FDDI (Fiber Distributed Data Interface) is a standard for data transmission on fiber optic lines in a local area network (LAN) that can extend in...
www.it-outpost.com /directory/f/Fiber_Distributed_Data_Interface   (197 words)

  
 Fiber Distributed-Data Interface (FDDI) - function and frame format - Free Computer Science Tutorials - Provided by ...
FDDI (Fiber-Distributed Data Interface) is a standard for data transmission on fiber optic lines in that can extend in range up to 200 km (124 miles).
It should be noted that relatively recently, a related copper specification, called Copper Distributed Data Interface (CDDI) has emerged to provide 100-Mbps service over copper.
Any data sequence that does not end with this 'T' symbol is not considered to be a frame.
www.laynetworks.com /FDDI.htm   (2551 words)

  
 What is FDDI? - a definition from Whatis.com - see also: Fiber Distributed Data Interface
- FDDI (Fiber Distributed Data Interface) is a set of ANSI and ISO standards for data transmission on fiber optic lines in a local area network (LAN) that can extend in range up to 200 km (124 miles).
The FDDI protocol is based on the Token Ring protocol.
If the secondary ring is not needed for backup, it can also carry data, extending capacity to 200 Mbps.
searchnetworking.techtarget.com /sDefinition/0,,sid7_gci213957,00.html   (347 words)

  
 Fiber Distributed Data Interface   (Site not responding. Last check: 2007-10-12)
Fiber Distributed Data Interface (FDDI) is a LAN-type Network with a transmission rate of 1000 Mbit/s.
It is based on optical fiber as a transmission medium, though copper can be used for short distances (used to connect end systems).
FDDI was designed to run through fiber cables, transmitting light pulses to convey information between stations, but it can also run on copper using electrical signals.
www.acm.org /chapters/bombay/news/articles/20010404.html   (2303 words)

  
 Fiber Distributed Data Interface (FDDI)
Optical fiber is used as the main transmission media, which makes it completely different from all the previous LAN systems (a variation of FDDI exists that uses coaxial cable, but has similar MAC layer protocol to FDDI).
Two fibers are used to form a dual ring.
In this scheme, blocks of 5bits are used to represent 4bit information, i.e., for each of the 16 four bit data block, a 5bit block is used.
www.rpi.edu /locker/75/000475/main/subsection3_6_11.html   (642 words)

  
 FDDI ( Fibre and Fiber Distributed Data Interface) Definition
FDDI (Fibre and Fiber Distributed Data Interface) Definition
This white paper discusses how an OTDR detects and analyzes test results, and explains expected and unexpected trace data from fiber networks.
If the secondary ring is not needed for backup, it can also carry data, extending capacity to 200 Mbps.
www.bitpipe.com /tlist/FDDI.html   (294 words)

  
 Internet Glossary: Free from eBiz-U
Transferring data (usually a file) from a another computer to the computer you are are using.
In packet switching,all the data coming out of a machine is broken up into chunks, each chunk has the address of where it came from and where it is going.
This enables chunks of data from many different sources to co-mingle on the same lines, and be sorted and directed along different routes by special machines along the way.
www.ebiz-u.com /glossary.htm   (8116 words)

  
 fddi - Results By Free Computer Training Search
Fiber Distributed Data Interface (FDDI) Processors Fiber Distributed Data Interface (FDDI) Processors FDDI Interface Processor (FIP) Installation and Configuration Using FC-to-SC FDDI Adapters with FDDI
FDDI (Fiber Distributed Data Interconnect) is an improved token ring specification based on fiber as the physical medium.
ATM and FDDI networks ATM (Asynchronous Transfer Mode) and FDDI (Fiber Distributed Data Interface) networks are two other forms of high-bandwidth networks that can sustain multiple high-speed concurrent data exchanges with...
www.edcomp.com /results/fddi.html   (1357 words)

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