40 and 100 GbE – Network Interfaces of the Future

40 and 100 GbE –Network Interfaces of the FutureDrew [email protected]

© Infinera Corporation Fall 2007 Internet2 Member Meeting Drew Perkins 2

Agenda

40 and 100 GbE standards status

40 and 100 GbE LAN architectures

100 GbE transport architectures


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


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_paper

s/Overview_and_Applications2.pdf


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)


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


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-) PMDs No metro/LH DWDM interfaces


Likely100 GbE PMD Architectures

100 GbE MAC ASIC

100 GbE MAC ASIC

10x 10 Gb/s CDR

10x

10G

Copper10x 10 Gb/s CDR

10x

10G

12x Infiniband Cable10x

10G

100G Transponder100G Transponder

100 GbE MAC ASIC

100 GbE MAC ASIC

10x 10 Gb/s

VCSEL Array10x

10G

MMF

10x 10 Gb/s

Detector & TIALA Arrays

10x

10G

12x MMF Ribbon 10x

10G


100 GbE MAC ASIC

100 GbE MAC ASIC

10:4 Gearbox

10x

10G

10 kmSMF

4:10 Gearbox

10x

10G

SMF 1

25Gx44x 25 Gb/s MD & EML

Arrays

4x 25 Gb/s


4:1

WD

M

Mux

4:1 W

DM

D

emux

4x

25G

4x

25G

4x

25G

4x

25G


100 GbE MAC ASIC

100 GbE MAC ASIC

10:4 Gearbox

10x

10G

40 kmSMF

4:10 Gearbox

10x

10G

SMF 1


Arrays

4x 25 Gb/s


4:1

WD

M

Mux

4:1 W

DM

D

emux

4x

25G

4x

25G

4x

25G

4x

25G

SOA


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


How Will 100 GbE Be Transported Over DWDM?

ODU4? 1x 100 (120?) Gb/s Several vendors proposing Dual Polarization QPSK 100 Gb/s single- (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


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) Why would anyone do this?

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


100G LH Transponder 2 (Rx)Router 2

Router 1

100 GbE Over DWDM Transport – 10x 10Gb/s Example (1 of Several Possibilities)

100G LH Transponder 1 (Tx)

100G SR Transponder (Tx)

100 GbE MAC ASIC

10x 10 Gb/s FEC ASIC

10:4 Gearbox

10x

10G

100G SR Transponder (Rx)

4:10 Gearbox

10x

10G

SMF 1


Arrays

4x 25 Gb/s


4:1

WD

M

Mux

4:1 W

DM

D

emux

4x

25G

4x

25G

4x

25G

4x

25G

100G SR Transponder (Rx)

10x 10G FEC ASIC

100G SR Transponder (Tx)

100 GbE MAC ASIC

10:4 Gearbox

10x

10G4:10

Gearbox10x

10G

Optical Transport Network

1


Arrays

4x 25 Gb/s


4:1

WD

M

Mux

4:1 W

DM

D

emux

4x

25G

4x

25G

4x

25G

4x

25G

10x 10 Gb/s MD & EML

Arrays

10x 10 Gb/s


10:1 W

DM

M

ux10:1

W

DM

D

emux

10x

10G

4x

25G

10x

10G

10x

10G

SMF


SC2006 100GbE Network Demonstration

Thanks!

Drew [email protected]

40 and 100 GbE – Network Interfaces of the Future

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