FDDI

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FDDI

FDDI

FDDI

(Fiber Distributed Data Interface) Often pronounced "fiddy," it was a LAN and MAN access method that had its heyday in the mid-1990s. FDDI was an ANSI standard token passing network that transmitted 100 Mbps over optical fiber up to 10 kilometers. It included its own network management system and could optionally run over copper wire (CDDI) with distance limitations. FDDI II added circuit-switched service to this normally packet-switched technology in order to support isochronous traffic such as real-time voice and video.

Dual Rotating Rings
FDDI provided an optional dual counter-rotating ring topology that contained primary and secondary rings with data flowing in opposite directions. If a line broke, the ends of the primary and secondary rings were bridged together at the closest node to create a single ring again.

Single Attached and Dual Attached
Nodes could be configured as Single Attached Stations (SAS) connected to concentrators or as Dual Attached Stations (DAS) connected to both rings. Groups of stations were typically wired to concentrators connected in a hierarchical tree to the main ring. Large networks could be configured as a "dual ring of trees," in which the dual ring provided the backbone to which multiple hierarchies of concentrators were attached.


MIC Connector
FDDI used a dual-fiber MIC plug and socket for connection to devices.




MIC Connector
FDDI used a dual-fiber MIC plug and socket for connection to devices.
References in periodicals archive ?
Fiddy also threw down the gauntlet to rap legend Dr Dre - challenging Dre to an entrepreneurial duel over whether his long-established Beats headphones were better than Fiddy's SMS ones.
Still Fiddy, who will hit the UK next month performing dates in Glasgow, Manchester and Newcastle, reckons he is low maintenance on tour, and even admits to taking the Tube.
But Fiddy, 36, who is filming The Tomb with Sly, 65, and Arnie, 64, said: "I'll help her to become one of the biggest movie stars in the US.
Fiddy, was even seen "fondling one performer's breast", reports The Daily Star.
Happy birthday Fiddy, miss you loads, love you loads.
But fiddy cent is still behind his protAgA on this track, rapping on the chorus and taking Young Buck out on tour in England, including to Reading festival where they were bottled.
Poultex md Mark Fiddy claimed the site would become the leading online trading platform for international poultry--a sector worth around 5bn [pounds sterling] in Europe.
Fiddy was forced to pay Lavonia Leviston almost [euro]7.
Fiddy - real name Curtis Jackson - claimed he was "nervous" about working with the late star.
It's no Candy Shop, but it's OK and something a bit different from Fiddy.
Baylis Logistics T: 0117 937 3663 has announced the appointment of Dale Fiddy as commercial director.