DOCSLIB.ORG

Performance Studies of 100 Gigabit Ethernet Enabled by Advanced ModulaOn Formats

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Performance Studies of 100 Gigabit Ethernet Enabled by Advanced Modula�On Formats Performance Studies of 100 Gigabit Ethernet Enabled by Advanced Modulaon Formats Jinlong Wei, Jonathan D. Ingham, Richard V. Penty and Ian H. White E-mails: {jw748, jdi21, rvp11, ihw3}@cam.ac.uk Thank you to David Cunningham for useful discussions and advice Outline Background Part I: Simulaon Evaluaon System Descrip=ons and Parameters Link Power Budgets Power Dissipaon Part II: Experimental Demonstraon 2 Next Gen 100 Gigabit Ethernet with a Single Channel IEEE 802.3 NG 100 Gigabit Ethernet PMD study group proposed PAM – Single-laser 100 Gigabit Ethernet – FEC is incorporated – Use of MZ modulator is considered We have developed a full simulaon tool to evaluate various 100 Gb/s systems – In addi=on to PAM, we have inves=gated performance for NRZ, CAP and op=cal OFDM – In addi=on to MZ modulators, directly-modulated lasers (DMLs) are also considered – FEC is included We have experimentally demonstrated CAP – CAP is implemented without using DAC/ADC, providing high power-efficiency Work reported in this presentaon – Theore=cal evaluaon and comparison of link power budgets of NRZ, PAM, CAP and OOFDM – Power dissipaon evaluaon and comparisons between NRZ, CAP and OOFDM to demonstrate the poten=al of high power-efficiency for CAP – Experimental demonstraon of CAP 3 Reference 28 Gb/s NRZ System Parameters Component Parameter Value Type Gaussian response or rate equaons Laser Wavelength 1300 nm Rise =me 12 ps (20% to 80%), i.e., 18.6 GHz 3-dB BW Minimum dispersion λ 1324 nm Laser centre wavelength 1295 nm SMF Dispersion slope 0.093 ps/km/nm2 Length 500 m to 2 km Filter type 4th-order Bessel-Thomson Cut-off frequency 21.038 GHz Receiver Responsivity 0.9 A/W Sensi=vity -10 dBm (@ BER = 10-12) The parameters are based on what might be needed for a SMF 32GFC proposal PMD and DGD are ignored for 500 m to 2 km SMF links The above components and corresponding parameters are used for various 100 Gb/s mul=level systems for comparisons 4 100 Gb/s System Architecture with a Single Channel Digital implementaon is considered using DAC/ADC for all systems The CAP shaping filters are based on square-root raised- cosine (RRC) pulse shaping FEC and equalisaon are CAP-16 or CAP-64 necessary for the 100 Gb/s single-channel systems PAM systems can be obtained by simplifying the CAP system shown – Only In-phase component included – RRC shaping filters are replaced with rectangular shaping filters – NRZ is equivalent to PAM-2 QAM-16-OFDM or QAM-64-OFDM 5 100 Gb/s System Parameters NRZ PAM-4 PAM-8 CAP-16 CAP-64 QAM-16- QAM-64- OFDM OFDM Bit rate (Gb/s) 100 100 100 100 100 100.3 100.3 Symbol rate (Gbaud) 100 50 33.3 25 16.7 SE (b/s/Hz) 1 2 3 4 6 3.65 5.47 DML model type* 1 1 1 2 2 2 2 *Type 1 refers to a rate equaon model and Type 2 refers to a Gaussian model Rule of Thumb: When the bandwidth of the DML transmiPer (~18.6 GHz) is less than about 0.5 of the baud rate, DML nonlinearity has to be considered by using rate equaYons (Type 1); otherwise a simple Gaussian model (Type 2) can be used Note that laser nonlinearity can be ignored for all of the coding schemes when MZ modulators are used Trade-offs between DAC/ADC sampling rate and link power budget determine the choice of the order of mullevel modulaon schemes Higher DAC/ADC sampling rate allows lower-order mul=level modulaon, giving rise to lower mul=level penal=es On the other hand, higher signal bandwidth means stronger ISI due to limited system bandwidth 6 Power Budget Cons=tuents for Various 100 Gb/s Systems • The power penalty due to reflec=on, jiner etc. can be obtained from a presentaon to the IEEE 802.3 NG 100 Gigabit Ethernet study group[1] [1] S. Bhoja, “Study of PAM modulaKon for 100GE over a single laser,” Jan 23-27, 2012. 7 Laser Models Laser Model 1: Rate equaYons[1] Laser Model 2: Gaussian response Based on a lumped DFB model with rate The 3-dB BW is approximately 18.6 GHz equaons taking into account nonlineari=es[1] Laser nonlinearity is not considered, indicang that the DML induced The 3-dB BW is approximately 17 GHz @ a distor=on can be compensated by the bias current of 50 mA receiver equalisaon [1] J.M. Tang, et al, J. Lightwav. Technol., vol. 24 no. 1, 2006 8 Reference 28 Gb/s NRZ System Using both Laser Models -T T Output of DML (Model 1) Sensi=vity is -10 dBm @ BER = 10-12 The DML nonlinearity causes a power penalty of ~0.3 dB @ BER = 10-12 , indicang DML model 2 can be used. Similar DML nonlinearity penalty of < 1 dB is also observed in 100 Gb/s CAP-16/CAP-64 and QAM-16- -T T OFDM/QAM-64-OFDM Output of DML (Model 2) 9 100 Gb/s NRZ System using both Laser Models Laser Model 1 Laser Model 2 The difference in terms of system power budget is huge Before Rx EQ The DML nonlinearity is significant and 100 Gb/s NRZ fails as the power budget -T T -T T does not sasfy the requirement Aer Rx EQ Verifies the rules of thumb -T T -T T 20 taps T/4 spaced FFE +3 taps DFE and 2km SMF 10 100 Gb/s PAM Systems using both Laser Models Laser Model 1 Laser Model 2 Laser Model 1 Laser Model 2 Before Rx EQ -T/2 T/2 -T/2 T/2 -T/2 T/2 -T/2 T/2 Aer Rx EQ -T/2 T/2 -T/2 T/2 -T/2 T/2 -T/2 T/2 20 taps T/4 spaced FFE + 3 taps DFE and 2 km SMF Similarly to NRZ, PAM-4 and PAM-8 also fail when taking into account DML nonlinearity Verifies the rules of thumb CAP and OOFDM are the only survivors if using DMLs By default, for DML case, Laser Model 1 is used in NRZ and PAM systems and Laser Model 2 is used for CAP and OOFDM systems. For MZM case, Laser Model 2 is used for all schemes 11 Link Power Budget Performance using DMLs and FEC(10-3, 10-12) FEC(10-3, 10-12) means that a BER of 10-12 is achievable given that the input BER is 10-3 The total link power budget is 13.7 dB D: FFE-DFE containing 20 taps T/4 spaced FFE and 3 taps DFE 12 Link Power Budget Performance using DMLs and FEC(10-5, 10-15) FEC(10-5, 10-15) means that a BER of 10-15 is achievable given that the input BER is 10-5 Total link power budget is 12.3 dB D: FFE-DFE containing 20 taps T/4 spaced FFE and 3 taps DFE 13 Link power budget performance using MZMs and FEC(10-3, 10-12) Laser Model 2 is used for all modulaon formats The nonlinear P-I curve of MZM can be compensated by unequal symbol mapping[1], thus is ignored The total link power budget is 13.7 dB D: FFE-DFE containing 20 taps T/4 spaced FFE and 3 taps DFE Ref [1] G. Nicholl, et al, “Update on technical feasibility for PAM modulaKon” IEEE 802.3 NG 100GE PMD study group, Mar. 2012 14 Link Power Budget Performance using MZMs and FEC(10-5, 10-15) Laser Model 2 is used for all modulaon formats Total link power budget is 12.3 dB D: FFE-DFE containing 20 taps T/4 spaced FFE and 3 taps DFE 15 The Effect of FFE Tap Spacing and Tap Count on System Performance FFE tap spacing of T/4, T/2 and T are considered FFE tap spacing of T/2 is considered here and and MZMs with 2 km SMF are used for all MZMs with 2 km SMF are used for all systems systems The achievable power margin decreases with There is an op=mum FFE tap count beyond increasing tap spacing which the op=cal power budget does not improve There is trade off between achievable power margin and Rx signal oversampling required 16 Es=mated Power Dissipaon for Systems using MZMs PAM-4 PAM-8 CAP-16 CAP-64 QAM-16-OFDM DAC/ADC (GS/s) 100 66.7 75* 50* 55 * The Nyquist sampling rate given by 2*(1+roll_off_factor)*symbol_rate, with roll_off_factor being 0.5 Power dissipaon es=maon is based on 65 nm CMOS technology The power dissipaons of PAM, CAP and OFDM transceivers are dominated by the DAC/ADC For example, for CAP-16 (16-QAM-OFDM) with a single-channel configuraon, the DAC/ADC power consump=on accounts for 55% (48%) of that for the overall transceiver DAC/ADC power dissipaon is extrapolated from Fujitsu 55G-65G DAC and 56G ADC product sheets[1], and the assump=on is made that its power consump=on is linearly dependent on the sampling rate CAP implemented without DAC/ADC consumes less power than a 4×25 Gb/s NRZ 100 Gigabit Ethernet system, indicang great poten=al for high power-efficiency [1] Fujitsu factsheet, h`p://chais.info 17 Poten=al Lower Power Dissipaon for DAC/ADC Extrapolated ADC/DAC power dissipaon based on Fujitsu CMOS design Source: Kenn Liu, Hui, “Enable 100G- Key Technology for 100G Transport Network ASIC” , ICcAD2010.
Load more

Recommended publications
  • 40 and 100 Gigabit Ethernet Overview
    Extreme Networks White Paper 40 and 100 Gigabit Ethernet Overview Abstract This paper takes a look at the main forces that are driving Ethernet bandwidth upwards. It looks at the standards and architectural practices adopted by the different segments, how the different speeds of Ethernet are used and how its popularity has resulted in an ecosystem spanning data centers, carrier networks, enterprise networks, and consumers. Make Your Network Mobile © 2011 Extreme Networks, Inc. All rights reserved. Do not reproduce. Extreme Networks White Paper: 40 and 100 Gigabit Ethernet Overview and how its popularity has resulted in a complex ecosys- Overview tem between carrier networks, enterprise networks, and consumers. There are many reasons driving the need for higher bandwidth Ethernet, however, the main reason is our insatiable appetite for content. The definition of content Driving the Need for Speed in itself has evolved over time – where once the majority of traffic on an Ethernet network may have been occa- Ethernet in the Enterprise and Data sional file transfers, emails and the like, today technology Center is allowing us to push and receive richer content such Data center virtualization, which includes storage and as voice, video and high definition multimedia. Simi- server virtualization, is all about the efficient use of larly, mechanisms for delivering content have evolved resources. In the data center this is multifaceted. On over time to reflect this demand. While there were a few the one hand data center managers are trying to bring technologies competing for LAN dominance in the early power, cooling and space utilization under control, while days of networks, Ethernet has become the clear choice.
    [Show full text]
  • ATM Vs Gigabit Ethernet: a Technical Perspective
    White Paper Gigabit Ethernet and ATM A Technology Perspective Bursty, high-bandwidth applications are driving the need for similarly high-bandwidth campus backbone infrastructures. Today, there are two choices for the high-speed campus backbone: ATM or Gigabit Ethernet. For many reasons, business and technical, Gigabit Ethernet is selected as the technology of choice. This paper briefly presents, from a technical perspective, why Gigabit Ethernet is favored for most enterprise LANs. In the past, most campuses use shared-media backbones — such as 16/32 Mbps Token-Ring and 100 Mbps FDDI — that are only slightly higher in speed than the LANs and end stations they interconnect. This has caused severe congestion in the campus backbones when these backbones interconnect a number of access LANs. A high capacity, high performance, and highly resilient backbone is needed-one that can be scaled as end stations grow in number or demand more bandwidth. Also needed is the ability to support differentiated service levels (Quality of Service or QoS), so that high priority, time-sensitive, and mission-critical applications can share the same network infrastructure as those that require only best-effort service. 2 Gigabit Ethernet and ATM: A Technology Perspective White Paper Until recently, Asynchronous Transfer Interface, and Multiprotocol over ATM). Which is a “better” technology is no Mode (ATM) was the only switching This additional complexity is required in longer a subject of heated industry debate technology able to deliver high capacity order to adapt ATM to the connectionless, — Gigabit Ethernet is an appropriate and scalable bandwidth, with the promise frame-based world of the campus LAN.
    [Show full text]
  • 100 Gigabit Ethernet Is Here!
    100 Gigabit Ethernet is Here! Introduction Ethernet technology has come a long way since its humble beginning in 1973 at Xerox PARC. With each subsequent iteration, there has been a lag between time of standardization and large scale adoption. The latest iteration, dubbed 802.3ba by the IEEE Higher Speed Study Group (HSSG), was ratified in June, 2010 and follows this same pattern but with a slight twist. For the first time in Ethernet history a single standard defines two separate speeds; 100 Gigabit Ethernet (100GbE) as well as 40 Gigabit Ethernet (40GbE). Figure 1: Original Ethernet Sketch The technical challenges facing 100GbE have been significant; ranging from developing a whole new generation of optics that can handle 4 lanes of 25Gbps, to simply dealing with normal router and switch functions such as packet inspection, queuing, lookups, filtering and table updates, all in one-tenth the amount of time as with 10GbE. And of course this all has to be done with complete backwards compatibility and meeting all expectations with respect to bit error rate, latency, jitter and the like. As expected 40GbE gained some level of market acceptance first, but some 5 years after ratification the time for 100 Gigabit Ethernet is now! 2 | P a g e This whitepaper will discuss the evolution of 100GbE technology in the service provider and data center markets and provide insights in to how network application acceleration hardware can be leveraged to maximize performance and efficiency in emerging 100GbE network appliances. 100GbE in Service Providers Networks 100GbE is rapidly approaching large scale adoption in the wide area network (WAN), which is largely the purview of service providers.
    [Show full text]
  • Transceiver Product Guide
    PUBLIC_REV2017_N Transceiver Product Guide TRANSCEIVER PRODUCT GUIDE Skylaneoptics.com Transceivers for Datacom and Telecom Applications Skylane Optics is a leading provider of transceivers for optical communication. We offer an extensive portfolio for the enterprise, access, and metropolitan fiber optical market. The offerings provided by Skylane Optics are characterized by high quality and performance. In combination with our strong technical support, we enable our customers to build cost optimized network solutions solving existing and future capacity needs. Solutions Data Center Optimized fiber optic solution for Data Center Application FTTH Broad Product Portfoloio and Technology for FTTH Broadband Networks Wireless Enabling Rapid Expnsion of Mobile Broadband Enterprise - Campus We provides the enterprise network market with the most comprehensive product combinations TRANSCEIVER PRODUCT GUIDE P01 Products Our Engineering and Logistics Center > Inventory, logistics, programming and quality > control based in Fraire, Belgium > IQC [Incoming Quality Control] and OQC > [Outgoing Quality Control] > 100% optimized for handling of transceivers > SD [ANSI/ESD S20.20] compliant > Clean room environment; class 100K > Traceability > High Capacity Our Laboratory > Lab, based in Fraire, Belgium > Technical support > RMA handling > Qualification tests: > - Measure performance over the temperature range to verify compliance with standards > - Compliance with standards (IEEE, IEC, MSA) > - Power consumption > - Eye diagram > - Sensitivity > - Wavelength TRANSCEIVER PRODUCT GUIDE P02 Why Skylane Optics ? Innovations for Early Adopters Quality & Assurance Customization The manufacturing environment is strictly We have cutting-edge test equipment to Due to our high experienced engineers, compliant to most avanced standard, which ensure we supply high quality products. we are enable to modify the hardware and ensure long term reliability. software of the transceivers.
    [Show full text]
  • IEEE Std 802.3™-2012 New York, NY 10016-5997 (Revision of USA IEEE Std 802.3-2008)
    IEEE Standard for Ethernet IEEE Computer Society Sponsored by the LAN/MAN Standards Committee IEEE 3 Park Avenue IEEE Std 802.3™-2012 New York, NY 10016-5997 (Revision of USA IEEE Std 802.3-2008) 28 December 2012 IEEE Std 802.3™-2012 (Revision of IEEE Std 802.3-2008) IEEE Standard for Ethernet Sponsor LAN/MAN Standards Committee of the IEEE Computer Society Approved 30 August 2012 IEEE-SA Standard Board Abstract: Ethernet local area network operation is specified for selected speeds of operation from 1 Mb/s to 100 Gb/s using a common media access control (MAC) specification and management information base (MIB). The Carrier Sense Multiple Access with Collision Detection (CSMA/CD) MAC protocol specifies shared medium (half duplex) operation, as well as full duplex operation. Speed specific Media Independent Interfaces (MIIs) allow use of selected Physical Layer devices (PHY) for operation over coaxial, twisted-pair or fiber optic cables. System considerations for multisegment shared access networks describe the use of Repeaters that are defined for operational speeds up to 1000 Mb/s. Local Area Network (LAN) operation is supported at all speeds. Other specified capabilities include various PHY types for access networks, PHYs suitable for metropolitan area network applications, and the provision of power over selected twisted-pair PHY types. Keywords: 10BASE; 100BASE; 1000BASE; 10GBASE; 40GBASE; 100GBASE; 10 Gigabit Ethernet; 40 Gigabit Ethernet; 100 Gigabit Ethernet; attachment unit interface; AUI; Auto Negotiation; Backplane Ethernet; data processing; DTE Power via the MDI; EPON; Ethernet; Ethernet in the First Mile; Ethernet passive optical network; Fast Ethernet; Gigabit Ethernet; GMII; information exchange; IEEE 802.3; local area network; management; medium dependent interface; media independent interface; MDI; MIB; MII; PHY; physical coding sublayer; Physical Layer; physical medium attachment; PMA; Power over Ethernet; repeater; type field; VLAN TAG; XGMII The Institute of Electrical and Electronics Engineers, Inc.
    [Show full text]
  • The Future Is 40 Gigabit Ethernet White Paper Cisco Public
    The Future Is 40 Gigabit Ethernet White Paper Cisco Public The Future Is 40 Gigabit Ethernet © 2016 Cisco and/or its affiliates. All rights reserved. The Future Is 40 Gigabit Ethernet White Paper Cisco Public Executive Summary The business case for 40 Gigabit Ethernet is becoming inescapably compelling. While 10 Gigabit Ethernet is still making its way into the data centers, CIOs and IT managers must now consider how they are going to handle what’s coming next: high-bandwidth applications such as server virtualization and cloud computing; fabric consolidation within the data center; and a greater demand for high-performance computing among end users (see Figure 1). The need for faster data transfer rates is relentless and carries significant implications with regard to network productivity as well as operating expenditure (OpEx) costs. Figure 1. Current Trends Driving the Demand for This report addresses the impending move to 40 Higher-Speed Ethernet Gigabit Ethernet, how it may change the network architecture, and what IT managers can do now to Market Drivers for More Bandwidth prepare to migrate to the new standard. Consumer & Broadband Access Introduction: The Business Case for Content 40 Gigabit Ethernet Providers Since February 1980, when the first IEEE 802 Server Virtualization standards committee convened, speeds in Ethernet Video on delivery to all layers have made increasingly greater Demand leaps over increasingly shorter intervals. In 2016, Blade Server Higher eight years after the adoption of 10 Gigabit Ethernet, Speed Service the IEEE has adopted 802.3ba, paving the way for Providers & Ethernet IXCs 40 Gigabit Ethernet and 100 Gigabit Ethernet.
    [Show full text]
  • 40 and 100 Gigabit Ethernet: an Imminent Reality
    WHITE PAPER 40 and 100 Gigabit Ethernet: An Imminent Reality 40 and 100 Gigabit Ethernet: An Imminent Reality Many of today’s data centers are running 10 Gigabit Ethernet (GbE) over both optical fiber and balanced twisted-pair copper cabling in their backbone infrastructure where large numbers of gigabit links aggregate at core devices. As more edge devices; like servers and storage equipment, continue to move to 10 GbE, the next natural progression is for the network core to require even faster connections within the data center. Fortunately, there is a solution that is now an imminent reality. Standards have been in development since 2008, and the Institute of Electrical and Electronics Engineers (IEEE) will soon release the 802.3ba standard that will support data rates for 40 and 100 GbE over optical fiber cabling. Both cable and connectivity solutions capable of supporting these speeds already exist, and vendors are in the process of developing active equipment. Now is the time to migrate data center cabling infrastructures to support this imminent technology. 40 and 100 Gigabit Ethernet: An Imminent Reality Key Market Drivers 100 90 From storage and IP traffic growth to the advancement 35% CAGR in Storage Capacity of technology across many market sectors, the drivers 80 that moved data transmission speeds from 1 GbE to 68 10 GbE over the past decade are now expanding as 60 forecasted, creating the need for 40 and 100 GbE. 49 Petabytes 40 37 10 GbE Growth 28 20 20 While the global Ethernet switch market experienced overall decline in 2009, the migration from 1 to 10 0 GbE continued in data centers across the world.
    [Show full text]
  • Towards 100 Gbps Ethernet: Development of Ethernet / Physical Layer Aspects
    SEMINAR ON TOPICS IN COMMUNICATIONS ENGINEERING 1 Towards 100 Gbps Ethernet: Development of Ethernet / Physical Layer Aspects Ömer Bulakci Abstract — Physical layer features of Ethernet from the first released clauses and ongoing architecture researches for 100 realization towards the 100 Gb Ethernet (100 GbE) development GbE are elaborated. have been considered. Comparisons of these features are made according to the standardized data rates. Feasible physical layer TABLE I options are then discussed for high data rates. Milestones of 802.3 IEEE Standard I. INTRODUCTION Clause Date of Bit Physical THERNET is the most widely deployed Local Area Name Release Rate Medium Network (LAN) protocol and has been extended to E 802.3a Single Metropolitan Area Networks (MAN) and Wide Area (Thin Ethernet) 1985 10 Mbps Thin Coaxial Networks (WAN) [1]. The major advantages that characterize (Cheapernet) Cable Ethernet can be stated as its cost efficiency, traditional tenfold bit rate increase (from 10 Mbps to 100 Gbps), simplicity, high 802.3i 1990 10 Mbps TP Copper transmission reliability and worldwide interoperability 802.3j 1993 10 Mbps Two MMFs between vendors [2]. TP Copper The first experimental Ethernet was developed during the 802.3u 1995 100 Mbps Two Fibers early 1970s by XEROX Corporation in a coaxial cable (Fast Ethernet) (MMF,SMF) network with a data rate about 3 Mbps [3]. The initial 802.3z 1998 1 Gbps MMF, SMF standardization process of Ethernet was started in 1979 by (Gigabit Ethernet) Digital Equipment Corporation (DEC), Intel and Xerox. In 802.3ab 1999 1 Gbps TP Copper 1980, DIX Standard known as the “Thick Ethernet” was 802.3ae 2002 10 Gbps MMF,SMF released.
    [Show full text]
  • Evolution of Ethernet Speeds: What's New and What's Next
    Evolution of Ethernet Speeds: What’s New and What’s Next Greg Hankins <[email protected]> NANOG 64 Bob Metcalfe’s 1972 sketch of his original “ethernet” vision 1 Image provided courtesy of Palo Alto Research Center Inc., a Xerox Company COPYRIGHT © 2015 ALCATEL-LUCENT. ALL RIGHTS RESERVED. NANOG 64 2015/06/03 Agenda 1. Ethernet Speed Evolution 2. What’s Next: 2.5 GE and 5 GE 3. What’s Next: 25 GE 4. What’s New: 40 GE 5. What’s New: 100 GE 6. What’s Next: 400 GE 2 COPYRIGHT © 2015 ALCATEL-LUCENT. ALL RIGHTS RESERVED. Ethernet Speed Evolution Over 40+ years New Speeds Driven by Diverse Market Requirements • Market requirements for Ethernet are changing for different applications - Speed - Distance - Cost • Different new speeds are needed for - Wireless access points: 2.5 GE and 5 GE - Servers: 25 GE - Core networks: 400 GE • New Ethernet speeds under development will address these different requirements Six New Ethernet Speeds May be Coming Soon – Same Amount as in the Past 30 Years Roadmap courtesy of the Ethernet Alliance: http://www.ethernetalliance.org/roadmap/ 3 COPYRIGHT © 2015 ALCATEL-LUCENT. ALL RIGHTS RESERVED. NEW 2.5/5 GE Applications (~2016) Higher Speed Ethernet Target Applications • Higher Speed Wireless Key Application Drivers • Large Cat 5e/6 Installed Base NEW 25 GE Applications (~2016) 25 25 10 10 GE GE GE • Data Center Access GE 40 40 • Server NICs GE GE 40 GE Applications MORE 100 100 400 • Data Center Aggregation and Core GE GE GE • Data Center Access 10 100 400 40 100 GE GE GE • Server NICs 10 GE GE 400 • Metro Core GE GE MORE 2.5/5 10 100 400 100 GE Applications GE GE GE GE • Service Provider Aggregation and Core 100 400 GE GE 100 400 • Data Center Core GE GE • Metro Core NEW 400 GE Applications (~2017) • Service Provider Core 10 25 40 GE 40 GE GE 10 25 • Large Data Center Core GE GE GE • Large Metro Core 4 COPYRIGHT © 2015 ALCATEL-LUCENT.
    [Show full text]
  • A Survey of 10 Gigabit Ethernet and Backplane Ethernet
    December 12, 2019 A Survey of 10 Gigabit Ethernet and Backplane Ethernet A Survey of 10 Gigabit Ethernet and Backplane Ethernet Jacob Li , [email protected] (A paper written under the guidance of Prof. Raj Jain) Download Abstract Ethernet is growing rapidly now, and its transmission rate is increased from 1000 bps to 100 Gbps and even 400 Gbps. Higher-speed Ethernet is on the way, and problems are followed. This paper introduces the procedure of high-speed Ethernet's development and Backplane's emergence and discusses issues of every development stage like interoperability between devices. The paper also discusses how technologies like Serializer/Deserializer (SerDes) and Auto-Negotiation solves those problems in practice and push the progress of high-speed Ethernet development. Keyword: Backplane Ethernet, 10 Gigabit Ethernet, SerDes, Auto-Negotiation, IEEE 802.3ap, 10GBASE, 40GBASE, Physical Layer Table of Contents: • 1. Introduction • 2. 10 Gigabit Ethernet Standard o 2.1 IEEE 802.3ae 10 Gigabit Ethernet PHY Structure o 2.2 10 Gigabit LAN Ethernet over Optical Fiber o 2.3 10 Gigabit WAN Ethernet over Optical Fiber o 2.4 10 Gigabit Ethernet over Twisted-Pair Cable • 3. SerDes • 4. Auto-Negotiation • 5. Summary • 6. References • 7. List of Acronyms 1. Introduction In networking, Ethernet plays a very important role and is widely used to provide connectivity within and between systems. Now, as Ethernet is growing faster, the Ethernet can even provide faster links over multiple media [McCoubrey16]. As the demand for high-speed communication technology increases, the Ethernet's deployment all over the world results in bandwidth requirement explosion.
    [Show full text]
  • High Speed Ethernet: 40/100Ge Technologies
    Kevin Cui, Matt Yundt, Yajun Chen COEN 233 Computer Networks Spring 2013 HIGH SPEED ETHERNET: 40/100GE TECHNOLOGIES 1 TABLE OF CONTENTS HIGH SPEED ETHERNET: 40/100GE TECHNOLOGIES ....................................................... 1 2 INTRODUCTION ................................................................................................................. 4 2.1 Objective ................................................................................................................. 4 2.2 What is the problem ................................................................................................ 4 2.3 Why This is a Project Related to the This Class .................................................... 4 2.4 Why Other Approach is No Good ........................................................................... 4 2.5 Why You Think Your Approach is Better ................................................................ 4 3 THEORETICAL BASES AND LITERATURE REVIEW ...................................................... 5 3.1 What is Ethernet? ................................................................................................... 5 3.2 IEEE 802.3 Ethernet Architecture .......................................................................... 5 3.2.1 Ethernet MAC Basics .............................................................................. 6 3.2.2 Ethernet PHY Basics ............................................................................... 7 3.2.2 MII and PHY Sublayers ..........................................................................
    [Show full text]
  • FEC for Ethernet: a New Path to Flexibility
    White Paper FEC for Ethernet: A New Path to Flexibility Introduction The IEEE’s task force on 200/400 Gigabit Ethernet has The “extender sublayer,” or CDXS, sits between the issued a standard that specifies a single Forward Error media-independent interface (MII) and physical Correction code, Reed-Solomon (544,514, 10), based attachment unit interface (AUI), giving hardware on the use of PAM4 line coding. This might appear designers more freedom to experiment with error- to be a limiting factor for FEC implementations of correcting codes. The test community must be the future, except that the group also has proposed cognizant of how this could change future network a new sublayer that allows flexible use of end-to-end emulation, however. FEC or segment-by-segment FEC without underlying changes to Ethernet’s PHY or MAC layers. For the first Spirent’s 400/200/100/50GbE quad speed-test time in Ethernet’s history, developers can experiment modules were first to market, and have been designed with proprietary FEC while retaining compatibility with to support the mandatory FEC/PCS IEEE requirements. Ethernet standards. FEC for Ethernet: A New Path to Flexibility FEC’s Belated Relevance to Ethernet The 802.3bj 100Gbps backplane and copper cable task force was the first to recognize the necessity of FEC, particularly Forward Error Correction (FEC) has a history exceeding for such high signaling rates carried over copper. This group 50 years in magnetic storage, optical storage, and optical specified “Clause 91” Reed-Solomon FEC layer, typically transmission. Unlike simpler block codes which can correct implemented between two Physical Medium Attachment for single errors, FEC provided a correction technique for (PMA) sublayers, or between a PMA and a Physical Coding burst and random errors, and provides a method for limiting Sublayer.
    [Show full text]