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100 GbE Network implementations, challenges and testing

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  1. 100 GbE Network implementations, challenges and testing Joerg Packeiser Director Product Line Management Optical Transport JDSU Communications Test & MeasurementOptical Expo 2007, Dallas

  2. 4x25G CWDM Cool 100 GbE Ethernet Activities Ethernet Transport:Aggregate Bandwidth >> 100Gbit/s Multi-Lane Connections  100 Gbit/s per Wavelength CPE:No 100Gbit/s NICsbefore 2015 Investigation Data center nx100G DWDM Metro/Core HOT ! <40km HOT ! Short Range100Gbit/s per port IEEE HSSG Focus

  3. 100GbE is not always 100Gbit/s Serial Approaches: optimized for area of implementation 100GbEMAC Data Centers Short Reach <100m MMF or<10m Copper Campus Networks Intermediate Reach10km SMF Metro Long Reach 10-40km Long Haul 10x10G5x20G4x25G 4x25G 10x10G 10x10G MMF Serial 100G ODU2-11v ODU3-3v ODU4 100GbE MAC with 64/66 coding=> 103Gbps of data Current Focus of IEEE HSSG

  4. Technology: New modulation formats with high spectral efficiency (Duobinary Code, DQPSK,…) Compatibility with currently-installed optical line equipment (DWDM Grid, EDFAs, etc.) Compensation of transmission impairments (Noise, CD, PMD,…) Cost of 100GbE transceivers Processing of 100Gbit/s data streams Algorithms for parallel processing Standardized Interfaces between functional blocks, (cf. SFI-5 Interface, defined by IF for 40Gbit/s) Backplanes Common network structure for Ethernet and Transport (telecom & data) 100 GbE Challenges Networks:

  5. How does Ethernet scale for Transport? • SONET/SDH/OTN scales by factor of 4 (2.5G, 10G, …) • Ethernet scales by factor of 10 (100ME, 1GE, …) • 100GbE: opportunity to combine both worlds OC-3 155MOC-12 622MOC-48 2.5GOC-192 10GOC-768 40G SONET/SDH OTN Ethernet 100ME 1GbE 10GbE100GbE x4 x4 x10 OTU-1 2.7GOTU-2 10.7GOTU-3 43G OTNOverclock11.1G 44.4G ? x4 Bitrate

  6. Modulation formats for long haul transport RZ/NRZ100G elec. 100 QPSK50G elec. RZ/NRZ40G elec. Data Rate (Gbps) e.g. POLMUX QPSK25G elec. 40 QPSK20G elec. RZ/NRZ10G elec. 10 1 2 4 bit/symbol • Long haul transport of 100G serial will require multi-level modulation (X bits per symbol) to run over existing long-haul networks

  7. aggregation(+modulation) modulation aggregation ODU2-11v9.995 Gbit/s x11 ODU4 Serial I/F110…130 Gbit/s ODU3-3v40Gbit/s x 3 Options for Ethernet Transport (Example) critical factors: time to market, link managment Physical layer aggregation vs. modulation schemes CPE Device CPE Device 10 Lane100m PMD 4 Lane10km PMD Ethernet UNIService Demarcation Point NE 1 NE 2 NE 3 NE 4

  8. 100GbE MAC/PCS Layer TestsAs 10GbE Frame /Block Generation / Analysis 100GbE End-to-End QoS As 10GbE Ethernet Frame Transmission Ethernet OAM Functions 100GbE /OTN Interworking Not standardized for 10GbE 100Gbit/s Interface/Signal Quality New standards- Stressed Eye/Jitter/Eye diagram t.b.d. Transmission Impairments New, dependent on implementation 100G Test Applications – What’s different? Test requirements Compare to 10GbE

  9. JDUS T&M Technical Approach • Cooperation with Component and System Manufacturers • Front ends • Fast digital circuits • Hooks“ for measurement applications in 100GbE components • Participation in Research Programs • Packet100 (planned) • Active Participation in Standardization • Tracking interface definition and system specification • Definition and standardization of measurement methods and instruments