AN ROADMAP

Scott Kipp [email protected] March 2013

1 THE VIEWS EXPRESSED IN THIS PRESENTATION ARE BROCADE VIEWS AND SHOULD NOT BE CONSIDERED THE VIEWS OR POSITIONS OF THE .

This presentation is being given to work toward having a position for the Ethernet Alliance

2 Ethernet Roadmap

• The IEEE defines Ethernet standards and does not release a roadmap for future standards • The industry does not have a good understanding of how Ethernet was developed or where it is headed • This presentation will look at past Ethernet developments to give a better understanding of where Ethernet will likely go in the future • The emphasis of this presentation is on high-speed optical interfaces • BASE-T and Backplane not covered

3 Gigabit Optical Modules and Speeds

Key:

Ethernet Speed

100G GBIC SFP

40G SC LC connector connector 10G Acronyms: 8GFC GBIC = GigaBit 4GFC Interface Converter SFP – Small Form

2GFC factor Pluggable Data Rate and Line Rate (b/s) and Rate Line Data Rate 1GFC GbE GFC – Gigabit Fiber 1G Channel GbE – Gigabit 1995 2000 2005 2010 2015 Ethernet Standard Completed

3/19/2013 4 Who Uses Gigabit Fiber in Data Centers? This is limited to Switching and not Routing

Fibre Channel is >95% optics Ethernet is > 95% copper

Gigabit Ethernet Switch Port Shimpents (000s)

Source: ’Oro Ethernet Switch Layer 2+3 Report Five Year Forecast, 2013-2017 3/19/2013 5 Got Copper?

3/19/2013 6 3/19/2013 7 10-100 Gigabit Optical Modules and Speeds

Key: Parallel Ethernet Speed

QSFP+ Optics Fibre Channel 100G MPO Speed InfiniBand Speed Connector New Form Factor 64GFC 40G 40GbE 40GbE 32GFC

10GbE 16GFC 10G Acronyms: SFP+ SFP – Small Form XFP factor Pluggable QSFP – Quad Small 300 Pin XENPAK Form factor Pluggable Data Rate and Line Rate (b/s) and Rate Line Data Rate MSA XPAK XFP – X (10) Form X2 1G Factor Pluggable Others – don’t worry 2000 2005 2010 2015 2020 about them Standard Completed

3/19/2013 8 Generations of 10GbE SFP+ Now Dominates

Generation 1st Gen 2nd Gen 3rd Gen 4th Gen

Optical 300 Pin XENPAK XPAK X2 XFP SFP+ Module MSA (Retimed) (Unretimed) Electrical 16 lanes 4 lane at 4 lane at 4 lane at 1 lane at 1 lane at Speeds (Gbps) at 0.644 3.125 3.125 3.125 10.3125 10.3125 Encoding 8b/10b 8b/10b 8b/10b 8b/10b 64b/66b 64b/66b Availability 2001 2002 2002 2003 2005 2007

XFP XPAK/X2 SFP+ 300 Pin MSA XENPAK

Presentation Title Month ##, 200# The Power of 10GbE Switches can cool about 2W/sq inch per module

15

Remove 300 Pin MSA and XENPAK 16:1 Gearbox 6.5+ sq inches (13W) 10 8W Improve Compnonents XPAK and X2 4+ sq inches (8W) Remove 5 4:1 Gearbox 4W XFP Remove 2 sq inches (4W) 2W Retimer Module Power Consumption (W) Consumption Module Power SFP+ 0 1 sq inch (2W) 2000 2003 2006 2009 2012 Standard Completed

3/19/2013 10 Port Density Drives Cost Down More Ports = Lower Cost = Wider Deployments 1U Switch or Modular Switch Blade 2 300 Pin MSA Ports 4 XENPAK Ports

8 XPAK or X2 Ports 16 XFP Ports 48 SFP+ Ports 128 (32) QSFP Ports

3/19/2013 11 100+ Gigabit Optical Modules and Speeds

Key: Ethernet Speed Fibre Channel 1T Speed InfiniBand Speed

400GbE 400GbE 16X25G 8X50G 512GFC 400G 4X112G 104G-IB-EDR 100GbE 4X25G 128GFC 256GFC 10X10G 4X28G 4X56G 100GbE 100G 4X25G

CFP CFP2

Data Rate and Line Rate (b/s) and Rate Line Data Rate 10G 2010 2015 2020 2025 Standard Completed

3/19/2013 12 Generations of Fibre Channel Serial and Parallel

Generation 6th Gen 7th Gen 8th Gen

Optical Modules 32GFC and 64GFC and 128GFC and 128GFC 256GFC 512GFC Electrical Speeds (Gbps) 1 lane of 28.05/ 1 lanes of 56.1/ 1 lane of 112.2/ Serial / Parallel 4 lanes at 28.05 4 lanes at 56.1 4 lanes at 112.2

Can this SFP+ be done?

QSFP28 QSFP56 QSFP112?

128GFC Overview Month ##, 200# Generations of 100GbE Early Stages of 100GbE Still

Generation 1st Gen 2nd Gen

Optical Module CFP CXP CFP2 CFP4 QSFP28 Not LR4 Electrical CAUI – 10 CPPI – 10 CAUI, CAUI-4 CAUI-4 Interface (Gb/s) lanes of lanes of CPPI 4 lane at 4 lane at retimed unretimed CAUI-4, 25.8 25.8 10.3125 10.3125 CPPI-4 Availability 2011 2010 2013 2015 2014

CFP4 QSFP28 CXP CFP2 CFP

Presentation Title Month ##, 200# The Power of 100GBASE-LR4 over Time LR4 won’t fit in QSFP28 for a long time 24

CFP Remove 16 16+ sq inches (32W) 4:1 Gearbox

12W Improve CFP2 Compnonents 8 6+ sq inches 6W (12W) Improve

CFP4 Components Power Consumption (W) Consumption Power 3.5W 3+ sq inches (6W) QSFP28 0 1.5+ sq inches (3.5W) 2010 2012 2014 2016 2018 Standard Completed

3/19/2013 15 Port Density Drives Cost Down More Ports = Lower Cost = Wider Deployments

1U Switch or Modular Switch Blade 4 CFP Ports

8 CFP2 Ports 16 CFP4 Ports 32 QSFP or CFP4 Ports*

* Probably only low power ports supported – not 100GBASE-LR4

3/19/2013 16 Generations of 400GbE Early Stages of 100GbE Still

Generation 1st Gen 2nd Gen

Optical Module CDFP 4X CFP4 CDFP2

Electrical Interface CDAUI–16 CDAUI–16 CDAUI–8 (Gb/s) 16 lanes of 16 lanes of 8 lanes of 50G retimed 25G retimed 25G Availability 2016 2016 2021?

C = 100 CD = 400 D = 500

Presentation Title Month ##, 200# Disclaimer

• Roadmaps are based on predictions of the future after looking back at the past • Predictions of the future are susceptible to errors that FEC will not correct • Predictions more than 5 years out should be viewed with skepticism and the eventual reality will be decided by many unforeseen events, including our own actions • Never the less, an approximate roadmap is better than no roadmap and we can correct the roadmap over the years

3/19/2013 18 100G Serial Lanes The building block of Terabit Speeds • 100G serial lanes have been demonstrated, but they are high power and usually very costly • Would you like a 100GbE SFP+? • Can it be built for under 2W and $1,000? • We’re just starting to work on 56G serial lanes in OIF • Let’s look at what we can do with 100G lanes

©2012 Brocade Communications Systems, Inc. CONFIDENTIAL: For Internal Use Only 3/19/2013 19 Terabit Speeds and Optical Modules and Speeds 100G Serial, 400G Parallel and up to 1.6 Tbps Key: Ethernet Speed

1.6TbE

16X100G Fibre Channel 1T TbE Speed 10X100G InfiniBand Speed 400GbE 4X100G 400G

100GbE 1X100G 100G

Data Rate and Line Rate (b/s) and Rate Line Data Rate 10G 2010 2015 2020 2025 Standard Completed

3/19/2013 20 A Futuristic Roadmap One possible outcome without revolutionary technology Key: Ethernet Speed

1.6TbE

16X100G Fibre Channel 1T TbE Speed 10X100G InfiniBand Speed 512GFC 400GbE 400GbE 4X112G 400GbE 16X25G 8X50G 4X100G 400G

100GbE 128GFC 256GFC 100GbE 10X10G 4X28G 4X56G 1X100G 100G 100GbE 104G-IB-EDR 4X25G 4X25G

Data Rate and Line Rate (b/s) and Rate Line Data Rate 10G 2010 2015 2020 2025 Standard Completed

3/19/2013 21 The Road Ahead

• The industry needs to move forward in a way that lowers the cost/bit • 400GbE can provide lower cost/bit soon • TbE can not provide lower cost/bit soon for a few years • We can always address the bandwidth explosion by deploying more ports at a lower speed • The long term solution is to provide fewer ports at lower cost that run faster

3/19/2013 22 THANK YOU

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