40/100 gbe over multimode fiber€¦ · alfred flores, rcdd . preterminated assemblies . product...

Alfred Flores, RCDD Preterminated Assemblies

Product Manager

40/100 GbE over Multimode Fiber Optical Infrastructure Essentials

The Standard IEEE 802.3ba Objectives 40GBASE-xxx

• Provide Physical Layer

specifications which support 40 Gb/s operation over: – At least 100m on OM3 MMF – At least 7m over a copper cable

assembly – At least 1m over a backplane – At least 10 km over single-mode

Multimode Fiber

• OMx multi-mode fiber is: – Drawn from ISO/IEC 11801 Standard, Generic Cabling,

Customer Premises

Color has meaning • OM3 (2003) multi-mode fiber is:

– 50/125 µm

– 2000 MHz•km EMB*, minimum, at 850 nm

• OM4 (2009) multi-mode fiber is:

– 50/125 µm

– 4700 MHz•km EMB*, minimum, at 850 nm

• ANSI/TIA-598-C Optical Fiber Cable Color Code – Indoor cable with AQUA jacket must be compliant to TIA-492AAAC

– OM3 is TIA-492AAAC

• Loss Budget for 40/100 GbE – OM3, 1.9 dB

– OM4, 1.5 dB

* Effective Modal Bandwidth

Parallel Optics, MMF, 40 Gb/s

• MTP™*/MPO (Multi-fiber Push On) Connectors

• 8 or 12 Fiber Loose Tube or Ribbon cable

• Loss budget mandates pre-terminated solution *MTP is a registered trademark of USCONEC

40GBASE-SR4

Lanes 1 2 3 4

Lanes 4

10 11 12

Tx

Rx

* MTP is a registered trademark for USCONEC

Parallel Optics, MMF, 100 Gb/s

• 10 Fibers at 10 GbE each way with 12F MTP

• 40 GbE links re-used, need additional MTP/MTP trunk to complete channel, fibers 1 and 12 go dark

*MTP is a registered trademark of USCONEC

100GBASE-SR10 Tx

* MTP is a registered trademark for USCONEC

Lanes x 2 3 4 5 6 7 8 9 10 11 x

Parallel Optics, 100 Gb/s

• 24F MTP’s available today and approved in standard

• 24-Fiber MTP connections can significantly reduce pre-terminated densities

• Top Row Rx, Bottom Row Tx

SMF, 40/100 GbE, CWDM

• SM option will use CWDM

• 40GBASE-LR4 – 4 lasers (10-Gig) in

each fiber, LC ends – 1 fiber Tx, 1 fiber Rx

• 100GBASE-LR4 – 4 lasers (25-Gig) in

each fiber, LC ends – 1 fiber Tx, 1 fiber Rx

Transceiver Costs

• Actual MSRP • 10GBASE-SR • 10GBASE-LR • 40GBASE-SR4 • 40GBASE-LR4 • 100GBASE-LR4

•Estimated MSRP

• 100GBASE-SR10

Pricing sourced from sanspot.com on 01/31/2012

388x

$220 $445 $500 $3,674 $5,060

$38,475

10GBASE-SR (multimode)

10GBASE-LR (single-mode)

40GBASE-SR4 (multimode)

40GBASE-LR4 (single-mode)

100GBASE-SR10 (multimode)

100GBASE-LR4 (single-mode)

Optical Transceiver Costs

1x 2x 2x 16x 23x

175x

Channel Cost Ratios on OM3

• Traditional rule of thumb, 3x cost increase for 10x performance increase – Latest pricing shows 2x increase for 40GBASE-SR4 over

10GBASE-SR • Sample channel cost for 40GBASE-SR4

– 2x transceiver cost of $500 = $1000 – Trunk cable, 12F, OM3, MTP-MTP, 100m = $1200 – Channel cost = $2200

Channel Cost Estimate OS2

• Traditional rule of thumb, 3x cost increase for 10x performance increase – 16x increase for 40GBASE-LR4 over 10GBASE-SR

• Sample channel cost for 40GBASE-LR4 – 2x transceiver cost of $3700 = $7400 – Trunk cable, 12F, OS2, LC-LC, 100m = $600 – Channel cost = $8000 (almost 4x MMF)

– However, 40GBASE-LR4 can reach up to 10km

Applications Update: Single Mode versus Multimode Fiber

Fiber Type SMF LOMMF EB (OM3)

LOMMF FB/XB (OM4/OM4+)

Cable Cost Low High Higher

Transceiver Type CWDM Parallel Optics Parallel Optics

Transceiver Cost High Low Low

Optical Reach @ 10G 10 km 300 m 550 m/600 m Expected Reach @

40/100G 10 km 100 m 150 m

Availability of 40/100G

Yes Yes Yes

Comparison for 40/100 GbE Implementations

Optical Fiber Lifetime

• 10 years to 20 years

40/100 Gb Ethernet

10 year transition for 1G Ethernet 5 years for 10GBE 5 years for 40GBE

0

2

4

6

8

10

12

14

16 20

00

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

100M 1G 10G 40G 100G

Mill

ion

serv

er u

nits

Based on IDC (2009) Server Forecast and hays_01_0407 ratios of Ethernet port speed

Actual 40/100 GbE Performance

Data Rate

Channel Length 200m 600m 800m

RATE

100 Gigabit/s

RATE

40 Gigabit/s

400m

GIGAlite 10-FB OM4

40GBASE- SR4

GIGAlite -10 OM3 202m

100m

800m, 10 connections

40GBASE- SR4 150m

GIGAlite 10-FB OM4

GIGAlite -10 OM3

352m 4 conn.

252m 3 conn.

100GBASE- SR10 100m

100GBASE- SR10 150m

OM3

OM4

OM3

OM4

Traditional Data Centers Optical

• Typified by – 62.5 µm, 50/125 µm, FDDI Grade or singlemode

– Backbone cabling terminated to SC, ST, a few LC connectors

– Usually field terminated

– Masses of jumpers and backbone cabling

– Usually tight buffered cabling

Current Data Centers

• Typified by – 50/125 µm, OM3 (or OM2+)

Grade or singlemode

– Backbone cabling terminated to MTP*/MPO

– Cassettes with SC or LC connectors

– High port density actives driving the use of harnesses

*MTP is a registered trademark of USCONEC

Future Data Centers

• Typified by – 50/125 µm, OM3/OM4 (+) Grade or singlemode – Backbone cabling terminated to MTP*/MPO – MTP/MPO patch cords – Retrofit of SC/LC adapter panels to MPO adapter

panels (reutilization of MPO backbone cables) – Preterminated assemblies mandated

• 10GBASE, 2.6 dB loss budget (cable/connector) • 40/100GBASE, 1.9 dB (OM3) loss budget

(cable/connector)

Migration from 10 to 40/100

1 and 10G Networks

High-Density 10G Network Configurations

High-Density 10G Network Configurations

Easily Move to 40G Ethernet

Receive Transmit

Easily Move to 40G Ethernet 100G Ethernet for Leading Edge Networks

Receive

Transmit

Connectivity Options for 100G Ethernet Equipment

Receive Transmit

100G Ethernet for Leading Edge Networks

Latest Developments

MMF 100 GbE with Less Fibers

• 100GBASE-SR4 – Uses 4 fibers to transmit and 4 fibers to receive

– 25 GbE per fiber

– Same 12F trunk you install today reused again

– Target reach of 100m on OM4

– Target price of 100GBASE-SR10

– 4x 25 GbE transceiver not really there yet

Short Reach Single-mode

• 100GBASE-MR – Proposed solution for SMF reach to 1km (maybe 2km)

• Target cost near 100GBASE-SR4

• MTP (MPO) Connectors to QSFP+ port (just like MMF)

• If implemented, creates interesting questions on maintaining polarity (making sure Tx goes into Rx)

Transceiver Costs

Pricing sourced from sanspot.com on 01/31/2012

388x

$220 $445 $500 $3,674 $5,060

$38,475

10GBASE-SR (multimode)

10GBASE-LR (single-mode)

40GBASE-SR4 (multimode)

40GBASE-LR4 (single-mode)

100GBASE-SR10 (multimode)

100GBASE-LR4 (single-mode)

Optical Transceiver Costs

1x 2x 2x 16x 23x

175x

• 100GBASE-SR4 • 4x 25 GbE, 4F • OM4 • 100 m

•100GBASE-MR

• 4x 25 GbE, 4F • SMF, 12F needed • MTP, not LC • 1km (not 40km) • 17x less cost but 40x less reach

Recommendations

• OM3 or OM4 – Early results show OM4 superior in reach and

connection pairs

• Use MTP Trunks with Cassettes – Will cover 1 GbE and 10 GbE today

– Ready for seamless migration to 40/100 GbE

• Lowest price tag and GREEN too!

Alfred Flores Berk-Tek, a Nexans Company

alfred.flores@nexans.com