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

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

3. 100GbE is not always 100Gbit/s Serial
Approaches: optimized for area of implementation
100GbE MAC
Data Centers
Short Reach <100m MMF or <10m Copper
Campus Networks
Intermediate Reach 10km SMF
Metro
Long Reach
10-40km
Long Haul
10x10G
10x10G MMF
10x10G 5x20G 4x25G
4x25G
Serial 100G
ODU2-11v
ODU3-3v
ODU4
100GbE MAC with 64/66 coding => 103Gbps of data
Current Focus of IEEE HSSG

4. 100 GbE Challenges 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)
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
SONET/SDH OTN Ethernet
100ME
1GbE
10GbE 100GbE x4 x4
x10
OC-3 155M OC M OC G OC G OC G
OTU-1 2.7G OTU G OTU-3 43G
OTN Overclock 11.1G
44.4G ? x4
Bitrate

6. Modulation formats for long haul transport
RZ/NRZ 100G elec.
100
QPSK 50G elec.
RZ/NRZ 40G elec.
Data Rate (Gbps) 40
e.g. POLMUX QPSK 25G elec.
QPSK 20G elec.
RZ/NRZ 10G 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. Options for Ethernet Transport (Example)
critical factors: time to market, link managment
Physical layer aggregation vs. modulation schemes
CPE Device
CPE Device
ODU2-11v Gbit/s x11
aggregation
ODU4 Serial I/F 110…130 Gbit/s
modulation
ODU3-3v 40Gbit/s x 3
aggregation (+modulation)
10 Lane 100m PMD
4 Lane 10km PMD
Ethernet UNI Service Demarcation Point
NE 1
NE 2
NE 3
NE 4

8. 100G Test Applications – What’s different?
Test requirements Compare to 10GbE
100GbE MAC/PCS Layer Tests As 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

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