The Drive to 100 GigE
description
Transcript of The Drive to 100 GigE
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The Drive to 100-GigE
Tuesday, October 2, Dallas
ModeratorSterling PerrinSenior Analyst
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Our PanelistsDr. Joseph Berthold
Vice President, Network ArchitectureCiena
Dr. Milorad CvijeticVice President & Chief Technology Strategist, Optical Network Systems
DivisionNEC Corporation of America
John JaegerGlobal Manager, Business Development
InfineraJoerg Packeiser
Director, Global Product Line Management, Optical Transport TestJDSU Communications Test & Measurement
Dr. Steve TrowbridgeVice Chairman of ITU-T Study Group 15
ITU
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Questions and Issues to Consider Whats driving the migration to 100-GigE? What is the likely timeline for this 100-GigE
migration? At what cost points can the industry produce
100-GigE products... And more importantly, what are operators willing
to pay for 100-GigE? Given 100-GigE, what happens to 40 Gig? What are the relevant standards groups for
100-GigE and what are they doing?
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Ciena Corporation
The Path to 100 G Ethernet
Joe Berthold
VP Network Architecture
Office of the CTO
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Ciena Corporation 5
Discussion topics
Motivation for higher speed transport networks (> 10G)
What can we extrapolate from the 40G experience?
Network requirements
Upgrades to existing systems, scaling overall capacity
Technology readiness
How may we carry a 100G signal across the WAN?
Economic feasibility
What can we expect for the relative cost of 100G?
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Ciena Corporation 6
A need for speed: 10GbE, 40Gb, 100GbE
Confidence:We will fill up the bandwidth just like we fill-up disk space and memory
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Ciena Corporation 7
40G Transmission Current Drivers
40G IP Router interfaces
Link bandwidth requires N X 10G
Problems with link aggregation
Most flows small, distribute nicely
Large flows from MPLS/IPSEC problematic
32-40 Ch DWDM ring exhaust
Multi-access DWDM rings in metro
Typically 5 nodes, some larger
At exhaust build entire new ring
New fiber, amps, ROADMs, installation, space, power,
Or add a pair of 40G transponders
Both of these applications support 40G transponder costs > 4X 10G transponder cost
Aggregation Group Member
Utilization
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Ciena Corporation 8
Mix-n-Match of 10G/40G/100G on Same Fiber System
10G
40G
100G (future)
...Channel 40/80
Channel 1
Mix & Match 10G, 40G and 100G waves on a fiber as needed using similar engineering rules
Low revenue per bit for data will not justify new network overbuilds
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Ciena Corporation 9
Increased Spectral Efficiency, More Capacity
Spectral efficiency: more bits, same fiber system, no forklift upgrade
Higher spectral efficiencyat 100G theoreticallypossible
Spectral Efficiency
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Bit Rate
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Ciena Corporation 10
Transport technology readinessPossible technology choices for 100G transmission
Parallel options suitable for 100G on dedicated fiber, limited distances
4 X 25G and 10X10G have been discussed
Negative service provider reaction to parallel networking solutions in MAN/WAN
Non-scalability of capacity: multiple waves to manage, ROADM port exhaust
Serial options new technology to improve propagation, spectral efficiency
Trading speed for complexity starting at 112 Gb/sec
Polarization multiplexing divide by 2
Each polarization carries a 56 Gb/s signal
Phase coding e.g.: Four phase states
Four phases encode two info bits
Symbol rate cut in half to 28 Gbaud/sec 00 01 10 11
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Ciena Corporation 11
Economic readiness
Customers would like
40G transponders at 2.5X 10G transponder cost
100G transponders at similar proportional savings
Business case will initially be made based on:
Economic benefit at the overall network solution level
Including CAPEX and OPEX for IP, DWDM and fiber
A reasonable 100G initial economic target: 100G = 2.5 X cost of 40G
Parity in cost/bit, with improved spectral efficiency
Definition of acceptable cost ratio with respect to 10G will vary with customer
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Ciena Corporation
Thank You
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The Drive to 100GbE
John Jaeger, Infinera
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Optical Expo 2007, Dallas | 14
100GbE Impact on Network Requirements
All Drives the need for Cost-effective
Scalability(6.4+ Tb/s)
100GbE is the new network
Fat Pipe
Client rates outpacing
Waves
Universal Carrier Opinion the
100GbE Standard will be late
- Data is fueling network growth @ 75% per year
- Ethernets Value Proposition signals cost-effective focus
- Past: Client interfaces multiplexed into a
- 40G was an inflection - 100GbE & nx100GbE
demand well ahead of single capability
- Lack of 100GbE impacting service delivery today!
- 100GbE LAG will be commonplace in 2010/11
- Emphasis is on cost-effective
- Lessons to be learned from 40G missteps & approaches
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Optical Expo 2007, Dallas | 15
Carrier/Network Operator Input
Other views on timing of 100GbE: 100GigE Needed for Broadband Customer Aggregation urgently in the
core by 2009 and across the board by 2011, Jason Weil, Cox Communications, IEEE HSSG April, 07
2009 timing: Will be a very uncomfortable wait, Donn Lee, Google, IEEE HSSG March 07
Bundles of 8 means that we will need 100 Gbps ye 2008 / beginning 2009, Ad Bresser, KPN IEEE HSSG May 07
Work needs to begin on whatever follows 100G as soon as possible,Ted Seely, Sprint Nextel, IEEE HSSG March 07
Source: Level3, OFC 2007 100GbE Workshop
YE10 projected scale
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Optical Expo 2007, Dallas | 16
Key System Implications Enabling Technologies
Service Independence & Flexibility The transport network provides an available pool of capacity to be tapped as and when required, completely independent of the service type While not broadly discussed mixing & matching 10GE, nx10GE LAG,
40G & 100GE client interfaces across a collection of 10/40/100G s will be problematic for many transport systems
Capacity Expansion Requires higher spectral efficiency or technologies that significantly open up the fiber spectrum The optical line systems need to support the capacity increases as
increased service bandwidth is delivered in cost-effective implementations
Massive Integration Without significant (1) optical, (2) optical-electrical and (3) electrical integration, systems will fall well short of customer expectations Complicating matters the 3 integration areas need to be architected and
defined together, as a cohesive system
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Optical Expo 2007, Dallas | 17
High-speed Services on Conventional DWDM
Service
Wave
= Transponder-based DWDM
Can my network handle the data rate? Wave blocking? Dispersion? Optical power? Regen? Protection? etc.
NOC
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Optical Expo 2007, Dallas | 18
300G available 365G available320G av
ailable 350G available280G available
140G
avail
able
Service/Capacity Abstraction
All sites are connected; restrictions removed; Operational simplicity
40G PoS
100GbE
310G available240G available
200G available 265G available
Decoupling Transport Services from Waves
As long as I have the bandwidth, I know I can support the service.
NOC
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Optical Expo 2007, Dallas | 19
Line Capacity Expansion Required
1.6 Tb/s 10s Tb/s
Controlled Optical Channels(PLC Technology)
2Higher Line Rates(PIC Capabilities)1Beyond C-band
(Enabled by PIC SOA)3
Dem
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Mux
SOA array
PIC based SOA amplificationPrecision PLC switches, multiplexers & optical penalty
mitigation
1.6Tb/s PICS (40ch x 40G)
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Example Capacities
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Optical Expo 2007, Dallas | 20
Significant Integration Required
PLC(Planar Lightwave Circuit)
PIC(Photonic Integrated Circuit)
Indium Phosphide Actives and passives Low-cost OEO
conversion Broad spectrum
amplification
Precision passives Switches and
multiplexers Optical penalty
(nonlinear distortion) mitigation
Defined hand-hand with PIC functionality
ASICs
Silicon Electronic Dispersion
Compensation Digital Wrapper and
Enhanced FEC Multi-protocol client
interfaces
Without 10 100x advancements in integration, the required density, power, reliability and cost requirements will not be obtained E.g. 100G line cards will not set the hurdle; better be thinking 4 10x that!
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Optical Expo 2007, Dallas | 21
10-to-100GbE Migration: Careful Hazards Ahead!
Pitfalls w/o service independence and well planned line capacity 10G, nx10G, 40G & 100G client interfaces will soon be the norm Transport systems need to accommodate all without a network overhaul
OTN & Ethernet alignment Incompatibility is fixed for ODU4; but what about the existing lower rates? ODU4 will be defined to accommodate 100GbE and 10x10GbE But, the industry will need continue to promulgate proprietary solutions to
better accommodate transparent carriage of 1GbE & 10GbE / The 10GbE to 100GbE migration path is not via 40GbE!
Input to the IEEE HSSG made if very clear; overwhelming industry support (service providers, switch/router vendors & transport vendors) that for network applications, 40GbE was an unnecessary distraction Todays business is being impacted due lack of a 100GbE interface 40GbE was accepted as a server/SAN/backplane host interface
You watch: system vendors will begin to position 40GbE as a network interface! Its easy to do, and takes the attention away from 100G challenges
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Optical Expo 2007, Dallas | 22
Summary Thoughts
Carrier & service providers has spoken loud & clear on their requirements 100GbE will be late when the standard is completed in 2010 They require a transport infrastructure that will accommodate 10G, nx10G,
40G & 100G services and do so at a constantly decreasing $/bit/km 100G & follow-on growth necessitates a review in how Transport
systems are architected Conventional All-Optical networking ties services to wavelengths This is fundamentally flawed Examples:
nx10GbE LAG (n=216) 100 GbE & nx100GbE services
Without significant innovation & technology advancements systems risk falling short of customer expectations Accommodate 100GbE cost effectively on todays platforms Constant integration to scale seamlessly as higher capacities are required
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Towards 100 GbE Introduction
Dr. Milorad CvijeticVice President and Chief Technology Strategist
NEC Corporation of America, Optical Network Systems [email protected]
Optical Expo 2007, Dallas, TX, Oct 2-3
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Optical Expo 2007, Dallas, TX, Oct 2-3
Outline
100 G drivers
System requirements
Enabling technologies
The Key for Success
Summary
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Optical Expo 2007, Dallas, TX, Oct 2-3
100 G Service Drivers and Expectations
Provide more bandwidth and optimize fiber utilization
100G Ethernet likely to become converged data/transport layer
There will be a need to upgrade the network over existing 10 LAN PHY based lighwave paths; the number of services requiring packetized 10 Gb/s bandwidth pipes is increasing rapidly while carriers need their aggregation and transport to be more efficient
Today the core routers are being rapidly deployed with 40 Gb/s ports. In a couple years 100GbE will be needed for this purpose. Accordingly, there will be a need to deploy new systems with future 100 G router interfaces.
Enable New services and save on CAPEX and OPEX
Support for future carrier grade 100 G interfaces at routers Optimize an equation involving number of elements/components, real estate, cost
per Mb/km
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Optical Expo 2007, Dallas, TX, Oct 2-3
Next Generation Optical Transport Network
IP VPN
TLSGbE Services
Voice over DataVoIP/VoATM
FR/ATML2 VPN
ADSL/FTTH
Private Line
Voice Lines
IP/MPLSNetwork
ROADMROADMDSLAM/PON
/GMPLSNetwork
OverlaySoft Switch
Ethernet Switch
Edge RouterCore Router
MPLS Switch
Metro/Edge Network
SDH ADM
WXC WXC
Optical/PacketCore Network
40/100 G application area
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Optical Expo 2007, Dallas, TX, Oct 2-3
System Requirements for 100 G Deployment
*per Dr. M. Birk, AT&T, OFC 2006
The same engineering rules for future 100 G and 40 G
1000 km enough for 70-80% of circuits* >> starting point2000 km enough for 80-90% of circuits
The same transport/networking principlespacket over opticalwavelength routing (ROADM/OXC) >> going through cascaded WB/WSS
The same practical aspectsReuse of 40 G technology (PMD, SERDES, drivers)Cost structure to be as close as possible to 40 G >> but with 2.5 bandwidth increase is in place
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Optical Expo 2007, Dallas, TX, Oct 2-3
Challenges related to 100 Gb/s deploymentBandwidth scalability
Buy and upgrade bandwidth per 100-Gb/s increment
Transmission issues in fiber Dispersion, nonlinear effects
Faster Electronics Processing power to match 100+ G speed
Component packaging and integration Compact design, tighter specs, new testing requirements
The Key for Success
Proper modulation format, dispersion compensation, and detection schemes
Proper coding schemes to help with nonlinearities
Key components and ASIC to be in house and as compact as possible
Valid research results and early dialog with customers
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Optical Expo 2007, Dallas, TX, Oct 2-3
AMP AMPAMP AMP
Dem
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emu x
Rx
Rx
Rx
Rx
Tx
Tx
Tx
Tx
Mux
Dem
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Mux
Rx
Rx
Rx
100 Gb Optical Transmission -mix and match of 40G and 100 G envisioned-
Electrical Input Electrical Output
Bit Rate/number of channelsOutput PowerModulation/Coding FormatExtinction Ratio
Signal LossSignal DispersionNonlinear EffectsCrosstalk
Signal-to-Noise RatioBit-Error-RateNoise PowerPower Penalties
New 40/100 G based transmission should follow the rules established for 10 G. There are enough means to resolve challenges related to high speed transmission (such as impact of nonlinear
effects, etc.)
40 G
100 G
100 G
40 G
100 G
100 G
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Optical Expo 2007, Dallas, TX, Oct 2-3
In house devices for high speed (40G/100G) transmission Proper modulation and compensation schemes for CD, PMD
Key components and ASIC in house
Valid research resultsand early verification
Leading IEEE/ITU standard activities
Technology Differentiators for 100G
100 Gb/s InP/InGaAs HBTD flip-flop
+13 dBm
Tunable laser
OEQ PMD Compensator
100 Gb results: 20 WDM Channels@107Gb/s Signal Transmission Over Straight Line Of 1000km SMF-28
C
D Chip size: 1.9 X 1.76 mm
1525 1530 1535 1540 1545 1550 1555 1560 1565-60
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Optical Expo 2007, Dallas, TX, Oct 2-3
Summary There are 100 G Service Drivers and
Expectations in Place
There are Standard Activities for 100 G Definition
(IEEE/ITU)
There are Enabling Technologies for Advanced 100 G Systems
There are favorable experiments to verify system requirements for reach and networking cascading effects
All above helps to resolve 100 G related issues and challenges in near future
System supporting mix and match of 40/100G DWDM channels are about to be introduced
We are moving closer to 100 G deployment!
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100 GbE Network implementations, challenges and testingJoerg PackeiserDirector Product Line Management Optical TransportJDSU Communications Test & Measurement
Optical Expo 2007, Dallas
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION33
100 GbE Ethernet Activities
Data center
Metro/Core
Ethernet Transport:Aggregate Bandwidth >> 100Gbit/s Multi-Lane Connections 100 Gbit/s per Wavelength
Short Range100Gbit/s per port
CPE:No 100Gbit/s NICsbefore 2015
IEEE HSSG Focus
HOT !
Invest
igation
Cool
4x25G CWDM
HOT !
nx100G DWDM
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION34
100GbE is not always 100Gbit/s Serial
100GbEMAC
Data CentersShort Reach
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION35
100 GbE Challenges
Technology:
New modulation formats with high spectral efficiency (Duobinary Code, DQPSK,)
Compatibility with currently-installed optical line equipment (DWDM Grid, EDFAs, etc.)
Compensation of transmission impairments (Noise, CD, PMD,)Cost of 100GbE transceivers Processing of 100Gbit/s data streams
Algorithms for parallel processing Standardized Interfaces between functional blocks, (cf. SFI-5 Interface, defined by
IF for 40Gbit/s) Backplanes
Common network structure for Ethernet and Transport (telecom & data)
Networks:
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION36
How does Ethernet scale for Transport?
OC-3 155M
OC-12 622M
OC-48 2.5G
OC-192 10G
OC-768 40G
OTU-1 2.7G
OTU-2 10.7G
OTU-3 43G
100ME
1GbE
10GbE
100GbEBitrate
SONET/SDH/OTN scales by factor of 4 (2.5G, 10G, ) Ethernet scales by factor of 10 (100ME, 1GE, ) 100GbE: opportunity to combine both worlds
SONET/SDH OTN Ethernetx10x4x4
OTNOverclock11.1G
44.4G ?
x4
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION37
Modulation formats for long haul transport
Long haul transport of 100G serial will require multi-level modulation (X bits per symbol) to run over existing long-haul networks
e.g. POLMUX QPSK25G elec.QPSK
20G elec.
RZ/NRZ40G elec.
RZ/NRZ10G elec.
bit/symbol
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QPSK50G elec.
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION38
Options for Ethernet Transport (Example)
CPE Device
CPE Device
NE 3 NE 4NE 1 NE 2
4 Lane10km PMDEthernet UNI
Service Demarcation Point
10 Lane100m PMD
Physical layer aggregation vs. modulation schemes
ODU2-11v9.995 Gbit/s x11
aggregation
ODU3-3v40Gbit/s x 3
aggregation(+modulation)
ODU4 Serial I/F110130 Gbit/s
modulation
critical factors: time to market, link managment
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION39
100G Test Applications Whats different?
Test requirements Compare to 10GbE
100GbE MAC/PCS Layer Tests As 10GbE Frame /Block Generation / Analysis
100GbE End-to-End QoS As 10GbE Ethernet Frame Transmission Ethernet OAM Functions
100GbE /OTN Interworking Not standardizedfor 10GbE
100Gbit/s Interface/Signal Quality New standards- Stressed Eye/Jitter/Eye diagram t.b.d.
Transmission Impairments New, dependent on implementation
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2007 JDSU. All rights reserved. JDSU CONFIDENTIAL & PROPRIETARY INFORMATION40
JDUS T&M Technical Approach
Cooperation with Component and System Manufacturers Front ends Fast digital circuits Hooks for measurement applications in 100GbE components
Participation in Research Programs Packet100 (planned)
Active Participation in Standardization Tracking interface definition and system specification Definition and standardization of measurement methods and
instruments
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InternationalTelecommunicationUnion
HighHigh--Speed Ethernet TransportSpeed Ethernet Transport
Dr. Stephen J. TrowbridgeDr. Stephen J. TrowbridgeViceVice--Chairman ITUChairman ITU--T Study Group 15T Study Group 15Chairman ITUChairman ITU--T Working Party 3/15T Working Party 3/15
Optical Expo 2007Dallas, Texas2-3 October 2007
ITU at the heart of international Geneva
Chief Technology OfficeOptics Division
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InternationalTelecommunicationUnion
Ethernet Service Model and relevant standards domains
CustomerEdge
ETY-UNI-C
NetworkTermination
ETY-UNI-N
NetworkTermination
CustomerEdge
ETY-UNI-N ETY-UNI-CNNI NNI
ETY-UNIService
DemarcationPoint
ETY-UNIService
DemarcationPoint
EoT NNI(Ethernet
overTransport)
Ethernet LANinterface
IEEE 802.3 HSSG(802.3ba)
Ethernet LANinterface
IEEE 802.3 HSSG(802.3ba)
OTN NNIITU-T SG15Q6/15 OpticsQ11/15 Signal
structures,mappings,services
Component/Backplane
OIF CEI-25, SFI-X
MACRS
PCSPMAPMD
MACRS
PCS
PMAPMD
MACRS
PCSPMAPMD
PMAPMD
GFP
OPUkODUkOTUk
bam
MACRS
PCS
GFP
bamOPUkODUkOTUk
Packet Service
Circuit/CBR Service
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InternationalTelecommunicationUnion
Packet vs. Circuit Ethernet Services
Packet ServicesShared or dedicated transport infrastructureFull rate or sub-rate serviceSupports a variety of topologies (EPL, EVPL, EVPLAN, EVPRMS) among two or more UNIsIncrease or reduce capacity in-service with VCAT/LCASGracefully degrade (reduce capacity) on partial link failure
Circuit ServiceFull-rate, bit transparent service between two UNIsNo packet grooming in the transportSupports most proprietary extensions to Ethernet frame format
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InternationalTelecommunicationUnion
Circuit or Packet ServicesOTN Virtual Concatenation
15
PSI
V
C
O
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OPUk OH OPUk Payload (4 3808 bytes)OPUk #X
1
2
3
4
15
PSI
V
C
O
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OPUk OH OPUk Payload (4 3808 bytes)OPUk #1
1
2
3
4
OPUk-Xv
1
4
X
+
1
1
4
X
+
2
1
5
X
+
1
1
5
X
+
2
3
8
2
3
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+
1
3
8
2
4
X
1
5
X
16
1
6
X
16
3824
3824
OPUk-Xv Payload (4 3808 X bytes)OPUk-Xv OH(4 2 X
bytes)
Ultra-high rate bit stream
Multiple lower rate streamsfor transport across network
GFPHDR DA|SA|M_SDU|FCS
Consecutivebytes of originalbitstream aredistributed to eachlane of the VCATgroup. No packetcan be retrievedfrom only one lane.
1
2
3
4
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InternationalTelecommunicationUnion
VCAT Group Sizes for PDH, SDH, OTNPDH VCAT Minimum payload
(kbit/s) Maximum payload
(kbit/s) Step size (kbit/s)
DS1-Xv, X = 1 to 16 1 533 24 528 1 533E1-Xv, X = 1 to 16 1 980 31 680 1 980E3-Xv, X = 1 to 8 33 856 270 848 33 856DS3-Xv, X = 1 to 8 44 134 353 072 44 134
SDH VCAT Minimum payload (kbit/s)
Maximum payload (kbit/s)
Step size (kbit/s)
VC-11-Xv, X = 1 to 64 1 600 102 400 1 600VC-12-Xv, X = 1 to 64 2 176 139 264 2 176VC-3-Xv, X = 1 to 256 48 384 12 386 304 48 384VC-4-Xv, X = 1 to 256 149 760 38 338 560 149 760
OTN VCAT Minimum payload (kbit/s)
Maximum payload (kbit/s)
Step size (kbit/s)
ODU1-Xv, X = 1 to 256 2 488 320 637 009 920 2 488 320ODU2-Xv, X = 1 to 256 9 995 277 2 558 709 902 9 995 277ODU3-Xv, X = 1 to 256 40 150 519 10 278 532 946 40 150 519
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InternationalTelecommunicationUnion
Packet Based Ethernet Services over OTN
ETYn
ETYn/ETH
ETH
ODUk/ETH
ETH_FP ETH_FP
ODUk
ODUkServerLayer
Network
ODUkServerLayer
Network
TrafficConditioning
Function
Traffic conditioning removes need forexact rate match between client andserver. This enables:
Subrate transport
Shared higher rate transport
ODUk-Xv/ETH
ODUk-Xv
ODUk-Xv/ODUk-X-L
ODUk ODUk
ETYn
ETYn/ETH
ETH
ETH_FP ETH_FP
ODUk-Xv/ETH
ODUk-Xv
ODUk-Xv/ODUk-X-L
ODUk ODUk
ODUk/ETH
ODUk
Single Server Layer
Virtually ConcatenatedServer Layer
or
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InternationalTelecommunicationUnion
Adaptation of40GbE into ODU3(e.g., lower MACrate or transcode
64B/66B to512B/513B)
Transparent mapping of 40 GbE (ETY5)into ODU3 Server Layer Network
ETY5
ETY5/ETC5 ODU3/ETC5
ODU3
ODU3ServerLayer
Network
ODU3ServerLayer
Network
ODU3/ETC5
ODU3 ETY5
ETY5/ETC5No TrafficConditioning
or flow awarenessas this is a
constant bitrateservice at PCS(41.325 Gbit/s)
ODU3/ETC5 adaptation isthe new capability that needsto be standardized,(e.g., lower MAC rate ortranscoding 64B/66B to512B/513B to fit standard ODU3)
ETY5 = physical layerfor 40 GbEETC5 = physical codingsublayer for 40 GbE
ODU3already widely
deployed
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InternationalTelecommunicationUnion
Transparent mappings of 100 GbE (ETY6) into new ODU4, ODU3-3v, ODU2-11v
ETY6
ETY6/ETC6
ODU4/ETC6
ODU4
ODUkServerLayer
Network
ODUkServerLayer
Network
No TrafficConditioning
or flow awarenessas this is a
constant bitrateservice at PCS
(103.125 Gbit/s)
ODU4/ETC6, ODU3-3v/ETC6,ODU2-11v/ETC6 adaptations arethe new capabilities that needto be standardized
ETY6 = physical layerfor 100 GbEETC6 = physical codingsublayer for 100 GbE
ODU3ODU3
ODU3-3v/ETC6
ODU3-3v
ODU3-3v/ODU3-3
ODU3 ODU2ODU2ODU2ODU2ODU2ODU2ODU2ODU2ODU2
ODU2-11v/ETC6
ODU2-11v
ODU2-11v/ODU2-11
ODU2ODU2
One wavelengthNew OTN Tier
112 or 130 Gbit/s TBDThree wavelengths
40 Gbit/s
11 wavelengths10 Gbit/s
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InternationalTelecommunicationUnion
ConclusionsIEEE 802.3ba objective for OTN support ITU-T and IEEE will work together to specify mappings for 40 GbE and 100 GbE into OTNPacket based services provide flexible allocation of bandwidth and different network topologiesCircuit services provide bit transparency, support for most proprietary extensions to Ethernet frame formatNew OTU4/ODU4 Tier to be added to OTN hierarchy to support transparent transport of 100 GbE or multiplexed tributaries of either 10x10 Gbit/s (~112 Gbit/s with FEC) or 3x40 Gbit/s (~130 Gbit/s with FEC) depending on optical transmission feasibility
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InternationalTelecommunicationUnion
AbbreviationsEthernet Physical Coding order n: n=1 10 Mbit/s n=2 100 Mbit/s n=3 1 Gbit/s n=4 10 Gbit/s n=5 40 Gbit/s n=6 100 Gbit/s
ETCn
Link Capacity Adjustment Scheme (G.7042)LCAS
Virtual ConcatenationVCAT
Optical Channel Transmission Unit order k (section overhead and FEC)
OTUkOptical Channel Data Unit order k (with path overhead)ODUk
Optical Channel Payload Unit order k k=1 2.5 Gbit/s k=2 10 Gbit/s k=3 40 Gbit/s k=4 100+ Gbit/s (exact rate TBD)
OPUk
Ethernet Physical Layer order nETYn
Ethernet MAC Layer (packet flow)ETH
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InternationalTelecommunicationUnion
Applicable ITU-T Standards
Multiple amplified spans of various reachesLongitudinally compatible intra-domain DWDM applications G.696.1
Ethernet Virtual Private Rooted Multipoint Service (under development)
G.8011.4
Ethernet Virtual Private LAN Service (under development)G.8011.3
Ethernet Virtual Private Line ServiceG.8011.2
Specific Ethernet Service Definitionsaligned with MEF Service Definitions
Ethernet Private Line ServiceG.8011.1
Overall Ethernet Services FrameworkEthernet over Transport - Ethernet Service CharacteristicsG.8011
In-service add or remove members from virtually concatenated groups
Link Capacity Adjustment SchemeG.7042
Frame-base mapping of packets into CBR transport
Generic Framing ProcedureG.7041
Metro networking with ROADMs and OAsAmplified multichannel DWDM applications with single channel optical interfaces (Next version will include 40G interfaces)
G.698.2
Multiple amplified spans of various reachesMultichannel DWDM applications with single channel optical interfaces
G.698.1
Metro networking without OAsSpectral grids for WDM applications: DWDM frequency grid
G.694.1
Single and multi-channel physical interfaces for various single-span reaches
Optical transport network physical layer interfacesG.959.1
Physical layer specifications for OTU3 signals, VSR interfaces for 40G (single-channel client interface)
Optical interfaces for intra-office systemsG.693
Frame Format for single or multi-channel systems with optional FEC. Includes virtual concatenation, client mappings. New OTU4/ODU4 tier to be added.
Interfaces for the Optical Transport NetworkG.709
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