the gluteal region - university of kwazulu-natal

Pluggable Optics- Featuring 40G &

100G and other advancements

PTT Forum

Dec 2013

© 2013 Finisar Corporation

Data Center Architectures are Changing

Access Layer

Aggregation

Layer

Core Layer

Data Centers becoming larger, more modular, more homogenous

Workloads spread across 10s, 100s, sometimes 1000s VMs and hosts

Network migrating from traditional 3-tier to flattened 2-tier topology

Higher degree of east-west traffic across network

Traditional ‘3-tier’ Tree Network New ‘2-tier’ Leaf-Spine Network

East-West

No

rth

-So

uth

© 2013 Finisar Corporation 2

Net Effect = More Bandwidth in the Data Center Faster Connections, LOTS more of them

CORE

ToR / Aggregation

SERVER

2012 2015 2018

10Gb/s

40Gb/s

Nx40Gb/s

Nx10Gb/s

Nx40Gb/s

100Gb/s

40Gb/s

100Gb/s

Nx100Gb/s

3 © 2013 Finisar Corporation

Interconnect, Peering & Transport Changing

Peering and Interconnects moving from 1G & 10G to 100G

Router-Router and Router-Transport client interfaces

Critical requirements are time to market and supporting multiple reaches

High port density is usually a secondary consideration for now

Currently deploying thousands of 100GE CFP (LR4, SR10, some ER4)

Next-generation systems will use 100GE CFP2 (LR4, SR10, SR4, ER4)

CXP (modules and AOC) is being used for inter-chassis connections (short MMF links)

© 2013 Finisar Corporation Confidential 5

40G vs. 100G in the Data Center

100G has:

Highest density

Lowest power consumption/bit

MMF reaches up to 100m

40G has:

Lowest cost/bit

MMF reaches up to 300m

SMF and MMF in a common

form factor (QSFP+)

Source: Lightcounting Ethernet Forecast, Dec. 2012

Multimode Fiber Single Mode Fiber

40G is here to stay

40G at a Glance

• 40GBASE-SR4 and 4 x 10GBASE-SR

• 4 lanes x 10.3 Gb/s

• XLPPI electrical interface

• Link distances up to 100m on OM3 (150m on OM4)

• Link distances up to 300m on OM3 (400m on OM4)

• 40GBASE-LR4

• 40G CWDM QSFP transceiver module

• MSA-compliant QSFP+ form factor and XLPPI

interface

• Maximum link length of 10km on Single Mode Fiber

(SMF)

• 40G AOC Quadwire

• QSFP-based active optical cable

• 4 lanes: 1 - 10.5G

• Standard lengths from 1 to 100m

• Multiple Cable types

QSFP: 40G and High-Density 10G

QSFP+ QSFP+

SFP+

SFP+

SFP+

SFP+

4x10G Breakout

QSFP+ QSFP+ QSFP+ QSFP+

Point-to-Point 40G QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

QSFP+ QSFP+

4x10G Shuffle

QSFP+ = Quad SFP+

This is both a 40G and a high-density 10G form factor

QSFP+ QSFP+ QSFP+ QSFP+

SFP+

SFP+

SFP+

SFP+ QSFP+ QSFP+

QSFP+ QSFP+

SFP+

SFP+

SFP+

SFP+

General Case:

Breakout and Shuffle

QSFP is a very high runner,

because it addresses both

40G and 10G links.

100G Ethernet Standardization

IEEE 802.3ba

100GBASE-LR4 10km SMF Based on 4x25G LAN-WDM

100GBASE-ER4 40km SMF Based on 4x25G LAN-WDM

100GBASE-SR10 100m OM3 MMF(*) Based on 10x10G Parallel MMF

CAUI 10x10G retimed electrical I/O

CPPI 10x10G un-retimed electrical I/O

Note that “10x10G SMF” (i.e., Neophotonics/Santur’s so-called “LR10”) is not a standardized

IEEE interface!

IEEE 802.3bm (in process)

100GBASE-SR4 ~100m OM3 MMF Based on 4x25G Parallel MMF

CAUI-4 4x25G retimed electrical I/O

(*) 150m on OM4 MMF

100G Ethernet Snapshot

100GE is already here Many thousands of 100GE links are already deployed in the field

The vast majority are CFP modules

100GE OEMs is rapidly expanding New IEEE optical/electrical standards (SR4, CAUI-4, 500m)

New higher density 100GE module form factors: CFP2, CFP4, QSFP28

Designs for high port-count 100GE systems have started

Many 100GE products will also be used for high-density 10GE applications in high volume

The 100GE and Nx10G markets

is expected to grow substantially

in the next three years (37% CAGR)

$140

$194

$245

$361

CY12 CY13 CY14 CY15

100GE Transceiver Market (in $K)

100GE CFP Module Form-Factor Evolution

time

CFP

4 ports/chassis CFP2

8/10 ports/chassis CFP4

16/20 ports/chassis

today


QSFP28 Form Factor

100GE active optical cables (no optical connector)

100GE optical transceivers (IEEE Standard compliance is TBD)

QSFP28 is standardized per SFF-8665 (SFF Committee)

It has a 4-channel 25Gb/s electrical interface (Tx & Rx)

MPO12 optical connector shown for MMF

It can support modules up to 3.5W

It can provide a retimed electrical interface (CAUI-4),

with a power dissipation penalty

The cage pitch of

QSFP28 is only

~2mm narrower

than the CFP4

cage pitch

CFP4 is slightly wider and

longer than QSFP28

100G Module Port Densities

4x CFP

10x CFP2

18x CFP4

36x CFP4

Belly-to-belly

20x QSFP28

40x QSFP28

Stacked

CFP2

enables

1Tb/s per

blade

432 mm

100G Form Factor Applications in the Market

Telecom Carrier Environment: Router-Router and Router-Transport client interfaces

Critical requirements are time to market and supporting multiple reaches

High port density is usually a secondary consideration for now

Currently deploying thousands of 100GE CFP (LR4, SR10, some ER4)

Next-generation systems will use 100GE CFP2 (LR4, SR10, SR4, ER4)

CXP (modules and AOC) is being used for inter-chassis connections (short MMF links)

Data Center and Enterprise Switches: 100GE uplinks and 10GE fan-outs

The critical requirement is high port density

Currently deploying mainly 10GE SFP+, 40GE QSFP+ and some 40GE CFP

First 100GE systems will deploy 100GE CFP2 (LR4, SR10, SR4, ER4)

CXP will only be used when SMF support is not required by the system

Next generation systems will deploy 100GE CFP4 and 100GE QSFP28

CXP, CFP2 and CFP4 form factors will also be used for 10GE fan-out

applications (enabling higher 10GE port densities than SFP+)

© 2013 Finisar Corporation

Active Optical Cables Primer

Compared to Optical Transceivers

Cost-optimized: Not constrained by optical interface specifications driven by longer-reach applications

Datacenter/Consumer friendly: No cleanliness issues in optical connector

Disadvantage: Cannot be routed through optical patch panels

Pin RX

VCSEL Laser

Driver

Post-

Amp Pin RX

VCSEL Laser

Driver

Post-

Amp

Electrical Electrical

Compared to Copper Cables

Longer reach

Lower weight and tighter bend

radius, means easier cable

management

Thinner cables allow better

airflow for cooling

Lower power consumption,

with no power-hungry

conditioning ICs required on the

host board

Optical-to-Electrical conversion is inside the cable end-plugs

Optical

14

Long span/Inter-building

10G SFP+ LR 10km SMF

40G QSFP+ LR4 10km SMF

100G CFP DWDM

SMF, Low-latency

Optics For the Data Center

Ethernet Networking Applications

Intra-rack

10G Laserwire®

10G SFP+ SR

Inter-rack

10G SFP+ SR 300m OM3 MMF

400m OM4 MMF

10G Laserwire®

Up to 30m

40G QSFP+ SR4 100m OM3 MMF

150m OM4 MMF

40G Quadwire®

Up to 300m

100G CXP SR10 100m OM3 MMF

150m OM4 MMF

100G C.wire® Up to 300m


Optics for Router/WAN Links

10G Interfaces

SFP+ LR 10km SMF

SFP+ ER 40km SMF

SFP+ ZR/DWDM 80km SMF

XFP ER/ZR/DWDM 80km SMF

40G Interfaces

40G CFP SR4 100m OM3 MMF

150m OM4 MMF

40G CFP LR4 10km SMF

100G Interfaces

100G CFP SR10 100m OM3 MMF

150m OM4 MMF

100G CFP LR4 10km SMF

100G CFP DWDM ~500km SMF


Recap

Content and Application growth is driving:

Growth in traffic

Growth in optics

40G and 100G optics developments are supporting the growth in traffic

with:

Smaller form factors

Lower power consumption per bit

Lower cost per bit

Perguntas?

Muito Obrigado!

[email protected]; [email protected]

mailto:[email protected]

the gluteal region - university of kwazulu-natal

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