1. 40 and 100 GbE – Network Interfaces of the Future
Drew Perkins

2. Agenda 40 and 100 GbE standards status
40 and 100 GbE LAN architectures
100 GbE transport architectures

3. IEEE HSSG / 802.3ba Task Force
Study group approved 100G rate for network aggregation applications and 40G rate for server/host interfaces in Jul ‘07
Schedule (draft):
HSSG→802.3ba Task Force Jan ‘08
Last New Proposal May ’08
Task Force Ballot Sept. ’08
802.3 Working Group Ballot March ’09
Sponsor Ballot Nov. ’09
Standard Published 2Q2010

4. Ethernet Alliance – High Speed Ethernet (HSE) Committee
Technical & Marketing subcommittees established to facilitate consensus formation outside of the IEEE on technical approaches and to provide a cohesive set of industry education & application materials
Published initial 40/100GbE white paper

5. ITU – SG15
Provides base recommendations for the mapping of 100 GbE client interfaces into the OTN hierarchy
Draft proposals (which will be gated by IEEE draft standard decisions in 2008/09) to specify 4 OTN mappings for 100 GbE
10 x ODU2e
11 x ODU2
3 x ODU3
1 x ODU4
ODU4 rate is still TBD (either ~112G or 130G)

6. OIF (Optical Internetworking Forum)
Several working groups contributing to requirements & specifications surrounding 100 GbE end-to-end interworking
Carrier Working Group
Drafting a set of 100 GbE user requirements to effectively interwork IEEE LAN interfaces into the transport system
Physical and Link Layer Working Group
Working on 25G electrical interface specifications & LAN-to-OTN related requirements

7. Proposed and Likely 100 GbE PMDs
10 km on Single-Mode Fiber (SMF)
4x 25G using 1310 nm EMLs (possibly DMLs) and WDM over single fiber pair
10GBASE-LX4 runs at 4x Gb/s using 1310 nm DMLs over single fiber pair
10GBASE-L runs at 1x 10 Gb/s using 1310 nm DMLs
OC-768 runs at 40 Gb/s using 1550 nm EMLs
40 km on SMF
4x 25G using 1310 nm EMLs, Semiconductor Optical Amplifiers (SOAs) and WDM over single fiber pair
10GBASE-E runs at 1x 10 Gb/s using 1550 nm EMLs
First use of SOA technology in any standard (risk?)
100 m on OM3 Multi-Mode Fiber (MMF)
10x 10Gb/s using 850 nm VCSEL arrays and fiber ribbons
10GBASE-S runs at 1x 10 Gb/s using 850 nm VCSELs
10 m on a copper cable assembly
10x 10 Gb/s over Infiniband/CX4-style coax
10GBASE-CX4 runs at 4x Gb/s
Notes:
No 100 Gb/s “serial” (i.e. single-l) PMDs
No metro/LH DWDM interfaces

8. Likely100 GbE PMD Architectures
100 GbE MAC ASIC
10x 10 Gb/s CDR
10x
10G
Copper
12x Infiniband Cable
100G Transponder
100 GbE MAC ASIC
10x 10 Gb/s VCSEL Array
10x
10G
MMF
10x 10 Gb/s Detector & TIALA Arrays
12x MMF Ribbon
100G Transponder
100 GbE MAC ASIC
10:4 Gearbox
10x
10G
10 km SMF
4:10 Gearbox
SMF 1
25Gx4l
4x 25 Gb/s MD & EML Arrays
4x 25 Gb/s Detector & TIALA Arrays
4:1 WDM Mux
4:1 WDM Demux 4x
25G
100G Transponder
100 GbE MAC ASIC
10:4 Gearbox
10x
10G
40 km SMF
4:10 Gearbox
SMF 1
25Gx4l
4x 25 Gb/s MD & EML Arrays
4x 25 Gb/s Detector & TIALA Arrays
4:1 WDM Mux
4:1 WDM Demux 4x
25G
SOA

9. Proposed and Likely 40 GbE PMDs
100 m on OM3 Multi-Mode Fiber (MMF)
4x 10 Gb/s (vs. 10x 10 Gb/s for 100 GbE)
10 m over a copper cable assembly
1 m over a backplane
4x 10 Gb/s
Notes:
No 40 GbE SMF PMDs
No 40 Gb/s serial PMDs
No metro/LH DWDM interfaces

10. How Will 100 GbE Be Transported Over DWDM?
ODU4?
1x 100 (120?) Gb/s
Several vendors proposing Dual Polarization QPSK
100 Gb/s single-l (not serial)
4x Gb/s channels (with 7% FEC)
ODU3-3v?
3x 40 Gb/s
ODU2-11v?
11x 10 Gb/s
ODU2e-10v?
10x 10 Gb/s
ITU-T recently relented and specified OTU2e/ODU2e
Overclocked OTU2/ODU2

11. It’s Really a Question of Economics
OC-768 service provider experience
4x bandwidth increase, but » 4x cost increase
Not 2.5x as historically experienced and now expected/wanted
cost(1x 40 Gb/s) » cost(4x 10 Gb/s)
ODU3-3v
20% wasted bandwidth
cost(3x 40 Gb/s) » cost(12x 10 Gb/s) > cost(10x 10 Gb/s)
Why would anyone do this?
ODU2-11v
cost(ODU2e) = cost(ODU2)
cost(11x 10 Gb/s) > cost(10x 10 Gb/s)
ODU4
Complicated, power-hungry electronics
Will require significant integration to yield acceptable costs
Will it cost < ODU2-10v (will 100 GbE cost < 10x 10 GbE)?
Some predict 100 GbE may cost ~2.5x 40G POS
cost(2.5x 40 Gb/s) » cost(10x 10 Gb/s)
ODU2e-10v
Already integrated via PICs and shipping since 2004
Prediction: 10x 10 Gb/s ls will remain « 1x 100 Gb/s ls for a long time

12. Optical Transport Network
100 GbE Over DWDM Transport – 10x 10Gb/s Example (1 of Several Possibilities)
Router 1
100G LH Transponder 1 (Tx)
100G SR Transponder (Tx)
100G SR Transponder (Rx)
4x 25 Gb/s MD & EML Arrays
4x 25 Gb/s Detector & TIALA Arrays
100 GbE MAC ASIC
10x
10G 4x
25G 4x
25G 1
25Gx4l 4x
25G 4x
25G
10x
10G
10:4 Gearbox
4:1 WDM Mux
4:1 WDM Demux
4:10 Gearbox
10x 10 Gb/s FEC ASIC
SMF
100G LH Transponder 2 (Rx)
10x 10 Gb/s Detector & TIALA Arrays
10x 10 Gb/s MD & EML Arrays
10x
10G 4x
25G
10x
10G
10x
10G
10:1 WDM Demux
10:1 WDM Mux
10x 10G FEC ASIC
Optical Transport Network
Router 2
100G SR Transponder (Tx)
100G SR Transponder (Rx)
4x 25 Gb/s MD & EML Arrays
4x 25 Gb/s Detector & TIALA Arrays
10x
10G 4x
25G 4x
25G 1
25Gx4l 4x
25G 4x
25G
10x
10G
100 GbE MAC ASIC
10:4 Gearbox
4:1 WDM Mux
4:1 WDM Demux
4:10 Gearbox
SMF

13. SC2006 100GbE Network Demonstration

14. Drew Perkins dperkins@infinera.com 408-572-5308
Thanks!
Drew Perkins