40 and 100 GbE

1
40 and 100 GbE Network Interfaces of the Future

• Drew Perkins
• dperkins_at_infinera.com
• 408-572-5308

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
• http//www.ethernetalliance.org/technology/white_p
  apers/Overview_and_Applications2.pdf

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

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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 3.125 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 3.125 Gb/s
• Notes
• No 100 Gb/s serial (i.e. single-l) PMDs
• No metro/LH DWDM interfaces

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Likely100 GbE PMD Architectures
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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
• 4x 10 Gb/s (vs. 10x 10 Gb/s for 100 GbE)
• 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 26.75 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
Its 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) gt cost(10x
  10 Gb/s)
• Why would anyone do this?
• ODU2-11v
• cost(ODU2e) cost(ODU2)
• cost(11x 10 Gb/s) gt cost(10x 10 Gb/s)
• Why would anyone do this?

• ODU4
• Complicated, power-hungry electronics
• Will require significant integration to yield
  acceptable costs
• Will it cost lt ODU2-10v (will 100 GbE cost lt 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
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 10 Gb/s FEC ASIC
104 Gearbox
410 Gearbox
41 WDM Mux
41 WDM Demux
SMF
100G LH Transponder 2 (Rx)
10x 10 Gb/s MD EML Arrays
10x 10 Gb/s Detector TIALA Arrays
101 WDM Mux
101 WDM Demux
10x 10G FEC ASIC
Optical Transport Network
Router 2
100G SR Transponder (Rx)
100G SR Transponder (Tx)
4x 25 Gb/s MD EML Arrays
4x 25 Gb/s Detector TIALA Arrays
100 GbE MAC ASIC
104 Gearbox
410 Gearbox
41 WDM Mux
41 WDM Demux
SMF
13
SC2006 100GbE Network Demonstration
14
Thanks!

• Drew Perkins
• dperkins_at_infinera.com
• 408-572-5308