GIGABIT ETHERNET. e-ready Building Next Generation IT infrastructures. The Cabling Partnership. Mike Gilmore Managing Director, e-ready Building
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1 Mike Gilmore Managing Director,
2 Mike Gilmore Standards Activities Member: ISO/IEC JTC1 SC25 WG3: Generic Cabling ISO/IEC JTC1 SC25 Project Team: SOHO Convenor: ISO/IEC JTC1 SC25 WG3 IPTG: Industrial Premises Cabling Convenor: CENELEC TC215 WG1: IT Cabling CENELEC TC215 WG1 PT Industrial Premises Cabling Secretary: CENELEC TC215 WG1 PT Data Centre Cabling Mike Gilmore Senior Partner, Managing Director Chairman: BSI TCT7/-/1: IT Cabling BSI TCT7/-/3: IT Cabling Support Group Technical and Standards Director: Fibreoptic Industry Association Mobile: +44 ()
3 Optical Fibre Transmission Wavelengths VISIBLE LIGHT FRA-RED - OPTICAL FIBRE O E S L C Bands 1st Window 2nd Window 3rd Window Wavelength (nm) Multimode 85 nm Window Wavelength (nm) 1st Band Wavelength (nm) Singlemode 131 nm 2nd O Multimode 13 nm E S L C Singlemode 155 nm
4 MMF: Attenuation and Modal Bandwidth Optical fibre geometry (standardized) 5/ /125 Core diameter (µm) 5 ± ± 3 Cladding diameter (µm) 125 ± ± 3 NA.2 ± ±.15 Optical fibre performance (options) Attenuation coefficient dbkm -1 max. 85nm 13nm?? Modal bandwidth MHz.km min. 85nm 13nm?? 3.5 dbkm dbkm -1 Attenuation coefficient (dbkm -1 ) Wavelength (nm) Modal Bandwidth (MHz) MHz.km MMF Length (m)
5 Optical Fibre Categories CABLED OPTICAL FIBRE Attenuation coefficient (dbkm -1 max) Modal bandwidth OFL 1 (MHz.km min) Modal bandwidth LL 2 (MHz.km min) Propagation delay (ns.m -1 max) Wavelength 85nm 13nm 85nm 13nm 85nm 13nm 85nm 13nm ISO/IEC 1181 Ed. 2 (22) AND EN (22) MMF SMF 5/125 or 62.5/125 5/125 OM1 OM2 OM3 Wavelength OS1 3,5 131nm 1, 1,5 155nm 1, nm 155nm 5 OS2* OS1 1,,4,4 1, 5 NOTE 1: OFL = OverFilled Launch (LED-like) NOTE 2: LL (or RL) = LASER Launch ( or Restricted Launch) * standard in development
6 Optical Fibre Applications Mbs / NETWORK NAME ISO/IEC 882-3: FOIRL ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC TR : 4 & 16 Mb/s Token Ring M ISO/IEC : Demand priority ISO/IEC : FDDI PMD ISO/IEC : FDDI SMF-PMD ISO/IEC : FDDI LCF-PMD ISO/IEC 882-3: 1BASE-FX ISO/IEC 14165: FibreChannel M ISO/IEC 14165: FibreChannel ISO/IEC 14165: FibreChannel M IEEE 82.3ab: 1BASE: Ethernet ISO/IEC 14165: FibreChannel IEEE 82.3ae: 1GBASE-xyz: Ethernet WAVELENGTHS AND MODAL GROUPS MMF SMF 85 nm 13 nm 131 nm 155 nm 1BASE -SX 1BASE -LX 1BASE -LX -SR/SW -LX4* -LX4* /LR/LW -ER/EW * 1GBASE-LX4 uses Coarse WDM (CWDM) λ 1 = 127±1 (Lane 1) λ 2 = 13±6 (Lane 2) λ 3 = 1325±6 (Lane 3) λ 4 = 1349±1 (Lane 4)
7 MMF Applications WAVELENGTHS MMF Mbs -1 NETWORK NAME 85 nm 13 nm 1 1 ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC 882-3: 1BASE-FX 1 IEEE 82.3ab: 1BASE: Ethernet 1BASE -SX 1BASE -LX 1 IEEE 82.3ae: 1GBASE-xyz: Ethernet -SR/SW -LX4 Mbs NETWORK NAME ISO/IEC 882-3: 1BASE-FL/FB ISO/IEC 882-3: 1BASE-FX IEEE 82.3ab: 1BASE-SX: Ethernet IEEE 82.3ab: 1BASE-LX: Ethernet IEEE 82.3ae: 1GBASE-SR/SW: Ethernet IEEE 82.3ae: 1GBASE-LX4: Ethernet MAXIMUM CHANNEL LENGTH (CHANNEL SERTION LOSS MAX. LENGTH) MMF OM1 OM2 OM3 2 m (12.5 db) 2 m (6.8 db) 2 m (6.8 db) 2 m (11. db) 2 m (6.3 db) 2 m (6.3 db) 275 m (2.6 db) 55 m (3.56 db) 9 m* (4.44 db*) 55 m (2.35 db) 33 m (1.62 db) 82 m (1.8 db) 3 m (2.59 db) 3 m (1.96 db) 3 m (1.96 db) * Inferred values
8 Connecting Hardware CONNECTG HARDWARE Return loss (db min) Attenuation (db max) ISO/IEC 1181 Ed. 2 (22) AND EN (22) MMF OM1, OM2, OM3 Wavelength Connection Splice All 2 NA All 95%<,5 1%<,75 1%<,3 Wavelength All All SMF OS1, OS2 Connection Splice 35 NA 95%<,5 1%<,3 1%<,75 CONNECTG HARDWARE EQUIVALENT LENGTH MMF 85 nm nm nm Mated connection Splice Mated connection Splice,75 db,3 db,75 db,3 db 215 m 85 m 5 m 2 m SMF 131 nm nm nm Mated connection Splice Mated connection Splice,75 db,3 db,75 db,3 db 1875 m 75 m 1875 m 75 m
9 1BASE-FL/FB Attenuation (db, max.) Connecting hardware allowance 62.5/125 OPB 62.5/125 OPB 5/ dBkm -1 4 Connecting hardware allowance 5/
10 1BASE-FL/FB 12 1 OPB 62.5/125 Attenuation (db, max.) 8 6 OPB 5/ dBkm -1 4,75dB = 215 m
11 1BASE-SX - The Big Misconception Attenuation (db, max.) dB 2 1 Connecting hardware allowance 55m 3.5dBkm -1 (corrected to 83nm) OM1 62,5/125 OM2 5/125
12 1BASE-SX and 62.5/ OPB Attenuation (db, max.) 5 4 3MHz 3 2 Connecting hardware allowance 16MHz OM2 3.5dBkm -1 (corrected to 83nm)
13 1BASE-SX and 62.5/ OPB 5,75dB = 65 m Attenuation (db, max.) 4,75dB = 35 m 3MHz 3 OM2 3.5dBkm -1 (corrected to 83nm) 2 16MHz
14 1BASE-SX and 5/ OPB Attenuation (db, max.) MHz OM2 OM3 3 2 Connecting hardware allowance 3.5dBkm -1 (corrected to 83nm)
15 1GBASE-SR/SW - Misconception OPB Attenuation (db, max.) dB OM m 82m Connecting hardware allowance 3m 3.5dBkm -1 (corrected to 83nm) OM1 62,5/125 OM2 5/125
16 1GBASE-SR/SW and OMx GBASE-SR/SW OPB 5 Attenuation (db, max.) 4 3 Connecting hardware allowance OM3 3.5dBkm -1 (corrected to 83nm) OM1 62,5/125 OM2 5/125
17 1GBASE-SR/SW and OMx GBASE-SR/SW OPB Attenuation (db, max.) 5 4,75dB = 9 m,75db = 44 m 3 2 OM3 3.5dBkm -1 (corrected to 83nm) OM1 62,5/125 OM2 5/125
18 Statistical Modelling
19 The Impact of Multiple Connections - I Forecast: One Connection 1, Trials Frequency Chart Outliers , Trials Frequency Chart Outliers Forecast: Two Connections <99.8%< , Trials Frequency Chart Outliers Forecast: Four Connections <1%< <1%<2.18
20 The Impact of Multiple Connections - II Forecast: Six Connections 1, Trials Frequency Chart Outliers Forecast: Eight Connections , Trials Frequency Chart Outliers <1%<2.68. Forecast: Ten Connections 1, Trials Frequency Chart Outliers <1%< <1%<
21 Average Attenuation and Spread.8 Worst case average.6 attenuation per connection.4 (db) No. of connections dB per connection Connecting hardware attenuation (db) No. of connections
22 1BASE-SX and OM No. of connections Attenuation model Bandwidth model - worst case Bandwidth model - reality
23 1GBASE-SR/SW: OM1, OM2 and OM No. of connections OM1 62.5/ OM2 5/ No. of connections OM3 No. of connections Attenuation model Bandwidth model - worst case Bandwidth model - reality
24 Data Centre Cabling Standards PREMISES CABLG DA CENTRE CABLG TO CP FD BD CD ISO/IEC 1181 BS EN Telecommunications Outlet Consolidation Point Floor Distributor Building Distributor Campus Distributor pren External Network Interface Main Distributor Zone Distributor Local Distribution Point Equipment Outlet External networks ENI MD ZD LDP EO TO TO TO TO TO ENI Horizontal cabling CP Network access cabling Building backbone cabling FD FD MD Main distribution cabling BD ZD ZD Campus backbone cabling CD LDP Zone distribution cabling EO EO EO EO EO
25 EN : 25? EN pren pren Information technology - Generic cabling systems - General requirements and office areas Information technology - Generic cabling systems - General requirements Information technology - Generic cabling systems - Office premises pren Information technology - Generic cabling systems - Data centres Annex C (informative) Channel insertion loss models for high bit rate, multimode, optical fibre applications
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