communication markets division passive optical lans expo... · 2015. 4. 1. · gpon standard...

Communication Markets Division

R McGlashon Comms Expo - June 2012Passive Optical LANs

© 3M 2012. All Rights Reserved.


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AgendaWhy choose fibre in the LANWhat is a PONWhat is POLWhy choose POLPOL ImplementationsConclusions



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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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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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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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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


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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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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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

.

.

.

.

.

.

.

.

CIR/PIR – Committed/Peak Information Rate

1x 32 split

Higher CIR available for lower splits



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POLS Equipment


• 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

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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


Backbone/Riser Horizontal


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Splitters – locating in the network


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

communication markets division passive optical lans expo... · 2015. 4. 1. · gpon standard...

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