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Communication Markets Division
R McGlashon Comms Expo - June 2012Passive Optical LANs
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Communication Markets Division
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AgendaWhy choose fibre in the LANWhat is a PONWhat is POLWhy choose POLPOL ImplementationsConclusions
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Communication Markets Division
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Why Choose Fibre for the LAN?Superior performanceEasy installationEasy to upgradeImmunity to electrical interferenceSafe - no electrical current flowsSecure - difficult to tap intoSmaller - less “bulky” than copper cablesLower weight than copper cable Environmentally friendly
12 strands fibre = >1500 Users12 strands X 32 = 384 ONT Drops
4 ports per ONT(voice, video, and data)
48 Voice + 48 Data Copper Cables = 48 Users
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Communication Markets Division
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Fibre vs. Copper: Relative Cable Bend, Size, and Strength
5.7 mm7.5 mm
Riser Rated cables Bend Insensitive SM Fibre Cable
Category 6 UTP
Category 6A STP
10 G Distance 40 km 45 m ?? 100 m
Cable Outer Diameter 2.9 mm 5.7 mm 7.5 mmWeight (300m) 2 kg 10 kg 18kgMinimum Bend Radius 10 mm (for BIF) 25 mm 35 mmTensile Strength(Installation) 250 N 70 N 70 N
25mm (1 inch)
30mmBend Radius Relative Comparison: 10mm
5mm
2.9 mm
Cable DiameterRelative Comparison:
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Communication Markets Division
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Single mode Fibre Cabling Media Costs Less
Horizontal Media Type Rel. Price/port Comments
Fibre, Singlemode OS2, 2 fibre, indoor, LSZH
1 Single fibre can aggregate either backbone, horizontal, or both
Fibre, Multimode OM3, 2 fibre, indoor, LSZH
2.4 Two fibres required Tx/Rx Pt-to-pt
Fibre, Multimode OM4, 2 fibre, indoor, LSZH
3.4 Two fibres required Tx/Rx Pt-to-pt
Copper Cat 6, UTP LSZH 2.8 Cable to every Ethernet TO
Copper Cat 6A, FTP LSZH 4.6 Cable to every Ethernet TO
Singlemode fibre media cost less than multimode fibre or copper (up to 50% or more)Today’s recommended media for new LAN horizontal installations:
Multimode Laser Optimized OM3 or OM4 Cat 6/Class E minimum up to Cat 6A/Class EA
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Communication Markets Division
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Passive Optical Network Technology – What is it?Popular technology for FTTH worldwide (~150 million and growing…)
• Uses mature ITU compliant G.984 GPON access technology standard (ratified 2003)• Enables converged services (IP Ethernet Data, Voice analog/VoIP, Video analog RF/IPTV)• Robust equipment
In 2009, GPON platform is optimized for Enterprise LAN features
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OLT – optical line terminalONT – optical network terminalCO - central office
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Each PON port from OLT –Supports a single optical fibre (2 wavelengths) serving up to 64 end devices,
and a maximum span of 20km
Overlay Wavelengths within the 15xx range–Typically used to support RF-based video delivery–In future will be used to support migration to DWDM services
0 – 20Km
GPON Standard Wavelengths Used–1490 nm downstream, 2.488 Gb/s - Voice, Data and Switched Video traffic–1310 nm upstream, 1.244 Gb/s – Voice, Data and Video Signaling traffic
1310 nm1490 nm
1550 nm
POL Network ArchitectureVOICE –
POTS/VoIP
DATA –IP/Ethernet
VIDEO –Switched
IPTV
Video –Analog &
QAM
ONT
ONT
ONT
Desktop Terminals
Multiport Terminals
Any Ethernet /IP10/100/1000BaseT
Optional Analog services
Ethernet Aggregation Switch
OLT
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Communication Markets Division
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Passive Optical LAN Network Architecture
Passive Optical Splitter• Rack Mount or modular versions• Power splits the signal on a single fibre up to 32 ways• Can be located indoor/outdoor, in TR, in work area • The further the splitter is extended to the desk, the greater
the savings in fibre infrastructure
Passive Optical Network (PON)• Completely passive infrastructure (no active/powered components) • Single fibre carries multiple wavelengths• 2.48 Gb/s downstream /1.24 Gb/s upstream• Serve remote bldgs up to 20Km
The Optical Line Terminal (OLT)• Acts as the central aggregation element• Located in the Core Data Centre• Replaces multiple L2 switches• Can aggregate thousands of end users
Optical Network Terminals (ONT)• Terminates the fibre at the end user• Converged voice, video, data all types• End services delivered over Cat 6/6A• Some models also provide native POTS• Desktop and Multi-desk unit models
Ethernet DownlinksEthernet Uplinks
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Communication Markets Division
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LAN Bandwidth AllocationCIR/PIR
2.4 Gbps / 1.2 Gbps
OLT - AXS1800
30 O
NT’s
per P
ON
Voice
Data
User 1
Voice
Data
User 2
Voice
Data
Video
Users 3 to 32
10 Mbps/1Gbps
200 kbps/1Mbps
200 kbps/1Mbps
10 Mbps/1Gbps
15 Mbps/1Gbps
200 kbps/1Mbps
10 Mbps/1Gbps
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CIR/PIR – Committed/Peak Information Rate
1x 32 split
Higher CIR available for lower splits
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POLS Equipment
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• Contains GPON and WAN cards• Can support multiple cards to cover
~ 2000 ONTs = ~7- 8K ports• Redundancy & reliability
OLT
• Multiple port sizes 1, 4, 24 common• Support for local PoE, video & POTS• Battery back up ONT
VLAN SupportAuthenticationQuality of service capability for real time trafficDynamic bandwidth management
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Side-by-Side Comparison
WAN/Internet
Core Router
Redundant Layer-3 Core
Duplex Single or Multi Mode Fibre Riser
Each Floor TR Access Layer Stacked Ethernet Switches
Min 2x Copper Cat5e/6/6a Cabling (100m max)
WAN/Internet
Core Router
Redundant Layer-3 Core
GPON OLT
Simplex SM FibreRiser
Min 2x Copper Cat5e/6/6a Cabling (100m max)
1x32 Splitter (Ceiling Mounted)
Desktop ONTs
Traditional LAN Passive Optical LANIDF/TR/FD with passive inter-connect or not needed
1x32 Splitter (Rack Mounted)
24-Port ONTs Rack Mounted
1x8 Splitter (Rack Mounted)
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WAN
Riser ClosetFloor n
Riser ClosetFloor 1
One or more24 port ONTs
One or more24 port ONTs
Core Router/Switch
WLAN
Fibre only to the Communications Closet
Copper Patch Panel
Patch Panels
WLAN
OLT AggregationSwitch
SM F
ibre
20km
Cat 5e/Cat 6
Maintains legacy copperhorizontal distribution
Fibre DistributionHub
Passive RiserFloor n
Passive RiserFloor 1
Core Router/Switch
FTT-Desktop or FTT-Enclosure
WLAN
OLT AggregationSwitch
SM Fibre
Fibre 1
Fibre 32
1:32 single splits
1:4 and 1:8Two-stage splits
Cat 5e/Cat 6Patch Cords
FDH with splitter in TR or splitterin ceiling enclosure
SM F
ibre
20kmCat 5e/Cat 6
FDH
FTT-Enclosure = splitter + ONTs + local or remote power
WAN
FTT-Desktop
Single OLT Supports -7000+ 1GbE Endpoints
Ethernet uplinks to router -Up to 8 1GbE or 4 10GbE
1:8 way split for 24 port ONTs(max 5 multiport ONTs per GPON port)
1:8 splitUp to 56/64GPON portsPer OLT
Cat 5e/Cat 6
FTT-Desktop, splitter above ceiling 1:8 split
8-28dB optical budget
4 port ONTs
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• Typical >50% TCO savings over standard architecture • Capital Equipment Expenses savings from 25-70%• Operational Expenses (power) savings from 60-80%• Space saving in original design
Total Cost of Ownership
Capex & Opex
• Power consumption savings of up to 80%• Uses less active electronics (passive TRs)• Less cooling in floor distributors
Contributes to “Green”Building Certification
• Much less materials used -- Example 4000 GbE ports:• Saves 3700 kg of copper + 3700 kg of plastic; (double
this for Cat6A/7A)Environmental Sustainability
• Singlemode fibre high bandwidth over distances• Reliable fibre plant to 25-50 years or more• Generations of electronics supported
Future Proof Architecture
Drivers - Passive Optical LAN
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Typical POL customers Large buildingsCampus based sitesDefence and militaryGovernment agencies and entitiesLarge hospitality/hotels/resortsHigher and lower education campus area networksLarge enterprise businessesFinancial institutionsMedia companiesCruise ship communicationsIndustrial/manufacturing plant networksAirports and stadiums
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Passive Optical LAN Solutions Components
1 Optical Distribution Frames
Field-mount Fibre Connectors
Fibre Patch Panels and Hubs
Copper Patch Panels
Passive Optical Splitters
Campus Area Outside Plant
Field-mount Fibre Splices
Fibre Patch Cords and Pigtails
2
3
4
5
6
7
8
9
Copper Jacks and Patch Cords
1 Fibre Drop Cable
Field-mount Fibre Connectors
Fibre Distribution Terminals
Outlets and Faceplates
Passive Optical Splitters
Horizontal Fibre Pathways
Field-mount Fibre Splices
Fibre Patch Cords and Pigtails
2
3
4
5
6
7
8
9
Copper Jacks and Patch Cords
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Backbone/Riser Horizontal
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Splitters – locating in the network
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19” Rack Wallbox
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ConclusionAll fibre networkRemove copper distance limitation
Frees up space
Established method of LAN implementationMost suited to larger networksRedundancy and resiliencyApplication specific cablingBandwidth to user depends on splitter ratioAsymmetrical transmission speed
Passive Optical LANsAgendaWhy Choose Fibre for the LAN?Fibre vs. Copper: Relative Cable Bend, Size, and StrengthSingle mode Fibre Cabling Media Costs LessPassive Optical Network Technology – What is it?Slide Number 7Passive Optical LAN Network ArchitectureLAN Bandwidth AllocationPOLS EquipmentSide-by-Side ComparisonSlide Number 12Drivers - Passive Optical LANTypical POL customers Passive Optical LAN Solutions ComponentsSplitters – locating in the networkConclusion
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