GPON in the Enterprise. Joseph P. Brenkosh. Sandia National Laboratories

Transcription

1 GPON in the Enterprise Joseph P. Brenkosh Sandia National Laboratories

2 Topics To Be Covered Traditional Enterprise Network Models Access Network Technologies GPON Fundamentals GPON Advantages to the Enterprise GPON Challenges to the Enterprise Current Status of GPON at SNL 2

3 Traditional Enterprise Network Models Hierarchical Model Enterprise Composite Network Model 3

4 Hierarchical Network Model 4

5 Enterprise Composite Network Model 5

6 Network Revitalization Project at SNL 6

7 Access Network Technologies Traditional Workgroup Dialup Cable Modem Service xdsl Wireless FTTx 7

8 Why Fiber? More Bandwidth Copper km (ADSL) meters Fiber km (100BASE-FX) with MMF 1 5 km (1000BASE-LX) with 10 micron SMF (80) km (10GBASE-E(Z)R) with 10 micron SMF Less Attenuation Other Noise ingress and cross-talk Ground-potential, galvanic isolation, lightning protection 8

9 Fiber to the X (FTTx) X Fiber Metallic FTTx Distance of x N = Neighborhood > 1000 ft. 300 m. C = Curb < 1000 ft. 300 m. B = Building 0 ft. 0 m. P = Premises H = Home 0 ft. 0m. 9

10 Active Optical Access Network Implements Point-to-MultiPoint (P2MP) network using fiber Requires a fiber pair for each user Requires 2N optical transceivers 10

11 Hybrid Optical Network (FTTC) Switch/transceiver/miniDSLAM located at curb Needs only 2 optical transceivers But it is not a pure optical solution Delivers lower bandwidth from the transceiver to the users Requires a complex converter in an unfriendly environment 11

12 Passive Optical Network (PON) Implements Point-to-Multipoint topology purely in optics Avoids costly optic-electronic conversions Uses passive splitters no power or cooling needed, unlimited MTBF Requires only N+1 optical transceivers 12

13 The PON Family APON ATM PON ITU-T G.983.x BPON Broadband PON ITU-T G.983.x GPON Gigabit PON ITU-T G.984.x EPON Ethernet PON IEEE 802.3ah GEPON Gigabit Ethernet PON IEEE 802.3ah 10G-EPON 10 Gbps PON IEEE P802.3av WDM-PON Wave Division Multiplexing PON (No Standard) 13

14 GPON Components The Optical Line Terminal (OLT) is located at the CO The Optical Network Terminal (ONT) is located at user s site Downstream is from the OLT to ONT Upstream is from the ONT to OLT Router is required, not really a PON component 14

15 GPON Operation 15

16 GPON Wavelengths Upstream nm (1310 ± 50) Downstream nm (1490 ± 10) Enhancement Bands: Video Distribution Service nm Additional Digital Services (ADS) nm Only one fiber per ONT required 16

17 GPON Physical Details For GPON BW is Gbps (US) and Gbps (DS) A 32 split is typical, 64 split is maximum Uses singlemode fiber Reach and # of ONTs supported are contradictory design goals 7 miles maximum distance from OLT to ONT with a 32 split Splitters are housed in a Fiber Distribution Hub (FDH) FDH has Multi-Fiber Push On Connector for special multifiber cable which connects to Fiber Distribution Terminal (FDT) FDT connects drop cables to ONTs 17

18 Optical Line Terminal Motorola AXS subscribers using a 32:1 optical split 3584 subscribers using a 64:1 optical split 200 GBps fully non-blocking switch fabric Supports up to 14 four-port GPON cards Supports up to 112 T1/E1 interfaces 10 Gbps and 1 Gbps uplinks IEEE 802.1Q VLAN GPON Encapsulation Method (GEM) ITUT-T G.984.1, G.984.2, G.983, G /60 VDC 1500 Watts maximum 18

19 Optical Network Terminal (ONT) Motorola ONT1120GE Provides 4x 10/100/1000 Base-T Ethernet ports Enables the delivery of IPTV voice, video, and data over a single fiber GPON 6.1 H x 7.7 W x 1.2 D +12 VDC, 15 Watts maximum IEEE 802.1Q VLAN with 8 levels of priority GPON: Gbps downstream, Gbps upstream /- 10nm voice/data receive nm voice/data transmit 19

20 Fiber Distribution Hub (FDH) ADC FDH 3000 Replaces access switches Requires no power Houses splitters Connectorized, no termination needed Different cabinet sizes (24 864) fibers 20

21 Splitter Module AFL Future Access TM Distributed Architecture Splitter Module 1x16 and 1x32 splits Housed in FDH Connectorized, SC-APC inputs and outputs 21

22 ADC Rapid Fiber Distribution Terminal Supports up to 24 drops Easily mounted Feeder cable is spooled 22

23 SC-APC Connector SC Angle Polished Connector Ferrule surface is angled to 8-10 degrees Maximizes return loss 23

24 Return Loss of Connectors Flat polish db PC polish - >30 db Ultra PC - > 50 db APC - > 60 db Ferrule surface is angled to 8-10 degrees Maximizes return loss Flat polish High Reflection Angle polish Low Reflection 24

25 GPON Advantages to the Enterprise Much simpler network topology, no access layer switches 50% fewer fiber optic cables Dramatic power savings No HVAC needed for FDHs or FDTs Passive components have virtually unlimited MTBF AES 128 encryption for downstream broadcasts Support for QoS Enables Triple Play 25

26 Power Consumption Comparisons in Watts Current Core 2676 New Core 7196 Current Dist New Dist Current Access New Access Current Total New Total Savings New uses 27% of Current 26

27 Current Versus New Network Topology 27

28 GPON Challenges to the Enterprise Primarily designed for residential subscribers Same bandwidth for all No legacy equipment concerns Rewiring required in many buildings Power User and server needs Some remote areas do not have any fiber connectivity Legacy equipment issues Until legacy network is decommissioned: Power usage will increase initially Will now have 2 networks to support Will not reap the full benefits of GPON 28

29 Current Status of GPON at SNL Extensive laboratory testing of GPON technology completed Extensive RFQ process completed: Contract recently awarded Infrastructure upgrade planning and wiring are proceeding Expect to complete project in February

30 References Efficient Transport of Packets with QoS in an FSAN-Aligned GPON, Angelopoulos, Argyriou, Zontos, et. al. IEEE Communications Magazine, February FiOS Web Pages, Verizon Communications Inc. Passive Optical Networks. Yaakov (J) Stein and Zvika Eitan, RAD Networks, May Gigabit Passive Optical Network GPON, Ivica Cale, Aida Salihovic, Matija Ivekovic, Proceedings of the ITI th Int. Conf. on Information Technology Interfaces, June 25-28, 2007, Cavtat, Croatia. FTTx PON Technology and Testing. Andre Girard, PhD, EXFO Electrical-Optical Engineering Inc. Quebec City, Canada, Fiber to the X, Wikipedia Web Page. CCDA Self Study, Diane Teare, Cisco Press, ADC Web Pages, ADC. Motorola Web Pages, Motorola, Inc. AFL Web Pages, AFL Telecommunications a subsidiary of Fujikura Ltd. of Japan. 30

31 Acknowledgement Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corp., a Lockheed Martin Company, for the U.S. Department of Energy under contract DE-AC04-94AL