IEEE 802.3 Ethernet
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Alternatív Valóság Kovács Ákos Hálózatok 10+ Tb/S 6,4 Tb/S 1,6 Tb/S 1 Tb/S
Számítógép hálózatok Alternatív valóság Kovács Ákos Hálózatok 10+ Tb/s 6,4 Tb/s 1,6 Tb/s 1 Tb/s 800 Gb/s 400 Gb/s 2017? • A jelen és a jövő 200 Gb/s 2018-2020? • Egyre nagyobb informatikai átviteli 50 Gb/s sebesség kell, jó minőségben 100 Gb/s 2018-2020? 2010 • Switchek minden hálózat alapjai 25 Gb/s 40 Gb/s 2016? 2010 5 Gb/s 10 Gb/s 2016? 2002 2,5 Gb/s 2016? 1 Gb/s 1998 100 Mb/s 1995 10 Mb/s 1983 Switchek • Switch-ekről általában • HUB, Bridge, L2 Switch, L3 Switch, Router • 10/100/1000/10GE switch-ek 2,5GE, 5GE (multiGIG switchek) • Néhány fontosabb működési paraméter • Hátlap (backplane) sávszélesség (Gbps) • Csomag továbbítási sebesség (packet forwarding rate, Mpps) • Switch-elési módok (switching methods, forwarding modes) • Fast Forward (cut-through, fragment-free) • Store-and-Forward • Adaptive (intelligent) L2 Switchek • L2 kommunikációra • Csak a MAC cím alapján (lokális hálózatokhoz LAN) MAC cím (48 bit) 24 bit 24 bit Organizationally Unique Identifier A gyártó osztja ki (OUI) L2 Switchek • A switch nem kérdezi meg a MAC címeket, csak megjegyzi • Ha nem tudja merre kellene menni akkor jön a flood (minden portjára elküldi kivéve amin kapta) • Ha erre válaszolnak, akkor azt MAC-PORT párost megjegyzi L2 Switchek döntési lánca • Layer 2 • CAM Content Addressable memory MAC címek • TCAM (ACL, QoS táblák) 3 értéke lehet, 0,1,X ahol x a „don’t care” bit • Kérdések melyekre válaszolni kell: • Merre továbbítsam a csomagot? • Továbbítsam a csomagot? • Milyen QoS értékekkel továbbítsam a csomagot? • InLine sebesség (ASIC) L3 switchek • Más néven Multi-layer switchek • További döntési lehetőségek a magasabb rétegek alapján mint pl. -
Mikrodenetleyicili Endüstriyel Seri Protokol Çözümleyici Sisteminin Programi
YILDIZ TEKNİK ÜNİVERSİTESİ FEN BİLİMLERİ ENSTİTÜSÜ MİKRODENETLEYİCİLİ ENDÜSTRİYEL SERİ PROTOKOL ÇÖZÜMLEYİCİ SİSTEMİNİN PROGRAMI Elektronik ve Haberleşme Müh. Kemal GÜNSAY FBE Elektronik ve Haberleşme Anabilim Dalı Elektronik Programında Hazırlanan YÜKSEK LİSANS TEZİ Tez Danışmanı : Yrd. Doç. Dr. Tuncay UZUN (YTÜ) İSTANBUL, 2009 YILDIZ TEKNİK ÜNİVERSİTESİ FEN BİLİMLERİ ENSTİTÜSÜ MİKRODENETLEYİCİLİ ENDÜSTRİYEL SERİ PROTOKOL ÇÖZÜMLEYİCİ SİSTEMİNİN PROGRAMI Elektronik ve Haberleşme Müh. Kemal GÜNSAY FBE Elektronik ve Haberleşme Anabilim Dalı Elektronik Programında Hazırlanan YÜKSEK LİSANS TEZİ Tez Danışmanı : Yrd. Doç. Dr. Tuncay UZUN (YTÜ) İSTANBUL, 2009 İÇİNDEKİLER Sayfa KISALTMA LİSTESİ ................................................................................................................ v ŞEKİL LİSTESİ ...................................................................................................................... viii ÇİZELGE LİSTESİ .................................................................................................................... x ÖNSÖZ ...................................................................................................................................... xi ÖZET ........................................................................................................................................ xii ABSTRACT ............................................................................................................................ xiii 1. GİRİŞ ...................................................................................................................... -
Gigabit Ethernet - CH 3 - Ethernet, Fast Ethernet, and Gigabit Ethern
Switched, Fast, and Gigabit Ethernet - CH 3 - Ethernet, Fast Ethernet, and Gigabit Ethern.. Page 1 of 36 [Figures are not included in this sample chapter] Switched, Fast, and Gigabit Ethernet - 3 - Ethernet, Fast Ethernet, and Gigabit Ethernet Standards This chapter discusses the theory and standards of the three versions of Ethernet around today: regular 10Mbps Ethernet, 100Mbps Fast Ethernet, and 1000Mbps Gigabit Ethernet. The goal of this chapter is to educate you as a LAN manager or IT professional about essential differences between shared 10Mbps Ethernet and these newer technologies. This chapter focuses on aspects of Fast Ethernet and Gigabit Ethernet that are relevant to you and doesn’t get into too much technical detail. Read this chapter and the following two (Chapter 4, "Layer 2 Ethernet Switching," and Chapter 5, "VLANs and Layer 3 Switching") together. This chapter focuses on the different Ethernet MAC and PHY standards, as well as repeaters, also known as hubs. Chapter 4 examines Ethernet bridging, also known as Layer 2 switching. Chapter 5 discusses VLANs, some basics of routing, and Layer 3 switching. These three chapters serve as a precursor to the second half of this book, namely the hands-on implementation in Chapters 8 through 12. After you understand the key differences between yesterday’s shared Ethernet and today’s Switched, Fast, and Gigabit Ethernet, evaluating products and building a network with these products should be relatively straightforward. The chapter is split into seven sections: l "Ethernet and the OSI Reference Model" discusses the OSI Reference Model and how Ethernet relates to the physical (PHY) and Media Access Control (MAC) layers of the OSI model. -
Networking Tutorial
EDUCATION Ethernet Technology Allen Light, Broadcom Corp. SNIA Legal Notice EDUCATION • The material contained in this tutorial is copyrighted by the SNIA. • Member companies and individuals may use this material in presentations and literature under the following conditions: – Any slide or slides used must be reproduced without modification – The SNIA must be acknowledged as source of any material used in the body of any document containing material from these presentations. • This presentation is a project of the SNIA Education Committee. SNIA© 2007 Storage Networking Industry Association. All Rights Reserved. Ethernet Technology 2 Abstract EDUCATION Ethernet, the standard local area network (LAN) access method. A specification for "LAN," "LAN connection" or "network card" automatically implies Ethernet without saying so. This session provides an overview of Ethernet technology, with an emphasis on the evolution of the standards from the original implementation of Ethernet on coax cable to the latest 10Gb Ethernet implementations. SNIA© 2007 Storage Networking Industry Association. All Rights Reserved. Ethernet Technology 3 Agenda EDUCATION • The Original Standard • Evolution of Ethernet • Elements of Ethernet • The Frame / Addressing • Media Access Controller • Physical Media SNIA© 2007 Storage Networking Industry Association. All Rights Reserved. Ethernet Technology 4 'net-"w&rk EDUCATION • A system of computers, terminals, and databases connected by communications lines Local Area Network (LAN) • A network of personal computers in a small area (like an office) that are linked by cable, can communicate directly with other devices in the network and can share resources (from Merriam Webster) • So why is this guy talking about a LAN technology at a storage networking conference? SNIA© 2007 Storage Networking Industry Association. -
IEEE Std 802.3-2005, Section
IEEE Standard for Information technology— Telecommunications and information exchange between systems— Local and metropolitan area networks— Specific requirements Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications IEEE Computer Society Sponsored by the LAN/MAN Standards Committee I E E E IEEE Std 802.3™-2005 3 Park Avenue (Revision of IEEE Std 802.3-2002 New York, NY 10016-5997, USA including all approved amendments) 9 December 2005 IEEE Std 802.3™-2005 (Revision of IEEE Std 802.3-2002) IEEE Standard for Information technology— Telecommunications and information exchange between systems— Local and metropolitan area networks— Specific requirements Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications LAN/MAN Standards Committee of the IEEE Computer Society Approved 9 June 2005 IEEE-SA Standards Board Abstract: Ethernet local area network operation is specified for selected speeds of operation from 1 Mb/s to 10 Gb/s using a common media access control (MAC) specification, management infor- mation base (MIB), and capability for Link Aggregation of multiple physical links into a single logi- cal link. 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 (PHY) interfaces for operation over coxial, twisted pair or fiber optic cables. System considerations for multisegment shared access networks describe the use of Repeaters which are defined for operational speeds up to 1000 Mb/s. -
Ethernet and Wifi
Ethernet and WiFi hp://xkcd.com/466/ CSCI 466: Networks • Keith Vertanen • Fall 2011 Overview • Mul?ple access networks – Ethernet • Long history • Dominant wired technology – 802.11 • Dominant wireless technology 2 Classic Ethernet • Ethernet – luminferous ether through which electromagne?c radiaon once thought to propagate – Carrier Sense, Mul?ple Access with Collision Detec?on (CSMA/CD) – IEEE 802.3 Robert Metcalfe, co- inventor of Ethernet 3 Classic Ethernet • Ethernet – Xerox Ethernet standardized as IEEE 802.3 in 1983 – Xerox not interested in commercializing – Metcalfe leaves and forms 3Com 4 Ethernet connec?vity • Shared medium – All hosts hear all traffic on cable – Hosts tapped the cable – 2500m maximum length – May include repeaters amplifying signal – 10 Mbps bandwidth 5 Classic Ethernet cabling Cable aSer being "vampire" tapped. Thick Ethernet cable (yellow), 10BASE-5 transceivers, cable tapping tool (orange), 500m maximum length. Thin Ethernet cable (10BASE2) with BNC T- connector, 185m maximum length. 6 Ethernet addressing • Media Access Control address (MAC) – 48-bit globally unique address • 281,474,976,710,656 possible addresses • Should last ?ll 2100 • e.g. 01:23:45:67:89:ab – Address of all 1's is broadcast • FF:FF:FF:FF:FF:FF 7 Ethernet frame format • Frame format – Manchester encoded – Preamble products 10-Mhz square wave • Allows clock synch between sender & receiver – Pad to at least 64-bytes (collision detec?on) Ethernet 802.3 AlternaWng 0's 48-bit MAC and 1's (except addresses SoF of 11) 8 Ethernet receivers • Hosts listens to medium – Deliver to host: • Any frame with host's MAC address • All broadcast frames (all 1's) • Mul?cast frames (if subscribed to) • Or all frames if in promiscuous mode 9 MAC sublayer • Media Access Control (MAC) sublayer – Who goes next on a shared medium – Ethernet hosts can sense if medium in use – Algorithm for sending data: 1. -
Ethernet PHY Information Model
Ethernet PHY Information Model Version 1.0.0-2 7th of March 2019 ONF TR‑541 Ethernet PHY Information Model Version 1.0.0-12 ONF TR‑541 FebruaryMarch 2019 ONF Document Type: Technical Recommendation ONF Document Name: Ethernet PHY Information Model Version 1.0 Disclaimer THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERW ISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. Any marks and brands contained herein are the property of their respective owners. Open Networking Foundation 1000 El Camino Real, Suite 100, Menlo Park, CA 94025 www.opennetworking.org ©2017 Open Networking Foundation. All rights reserved. Open Networking Foundation, the ONF symbol, and OpenFlow are registered trademarks of the Open Networking Foundation, in the United States and/or in other countries. All other brands, products, or service names are or may be trademarks or service marks of, and are used to identify, products or services of their respective owners. Page 2 of 64 © Open Networking Foundation Ethernet PHY Information Model Version 1.0.0-12 ONF TR‑541 FebruaryMarch 2019 Table of Contents Disclaimer .................................................................................................................................................... 2 Open Networking Foundation .................................................................................................................... 2 Table of Contents ....................................................................................................................................... -
Gigabit Ethernet
Ethernet Technologies and Gigabit Ethernet Professor John Gorgone Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 1 Topics • Origins of Ethernet • Ethernet 10 MBS • Fast Ethernet 100 MBS • Gigabit Ethernet 1000 MBS • Comparison Tables • ATM VS Gigabit Ethernet •Ethernet8SummaryCopyright 1998, John T. Gorgone, All Rights Reserved 2 Origins • Original Idea sprang from Abramson’s Aloha Network--University of Hawaii • CSMA/CD Thesis Developed by Robert Metcalfe----(1972) • Experimental Ethernet developed at Xerox Palo Alto Research Center---1973 • Xerox’s Alto Computers -- First Ethernet Ethernet8systemsCopyright 1998, John T. Gorgone, All Rights Reserved 3 DIX STANDARD • Digital, Intel, and Xerox combined to developed the DIX Ethernet Standard • 1980 -- DIX Standard presented to the IEEE • 1980 -- IEEE creates the 802 committee to create acceptable Ethernet Standard Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 4 Ethernet Grows • Open Standard allows Hardware and Software Developers to create numerous products based on Ethernet • Large number of Vendors keeps Prices low and Quality High • Compatibility Problems Rare Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 5 What is Ethernet? • A standard for LANs • The standard covers two layers of the ISO model – Physical layer – Data link layer Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 6 What is Ethernet? • Transmission speed of 10 Mbps • Originally, only baseband • In 1986, broadband was introduced • Half duplex and full duplex technology • Bus topology Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 7 Components of Ethernet • Physical Medium • Medium Access Control • Ethernet Frame Ethernet8 Copyright 1998, John T. Gorgone, All Rights Reserved 8 CableCable DesignationsDesignations 10 BASE T SPEED TRANSMISSION MAX TYPE LENGTH Ethernet8 Copyright 1998, John T. -
IEEE 802.3 Working Group Standards Status November 14Th, 2005
IEEE 802.3 Working Group Standards Status November 14th, 2005 ISO/IEC approved ISO/IEC 8802-3:2000 ANSI/IEEE Std 802.3-2005 (Was IEEE project 802.3REVam) th .3 Network To be published as 5 Books (Sections) Target publication date – 9 December Policy and Systems Section 1 Section 2 Section 3 Section 4 Section 5 Procedures Tutorial Clause 1 to 20 Clause 21 to 33 Clause 34 to 43 Clause 44 to 54 Clause 56 to 67 Approved Published Annex A to H Annex 22A to 32A Annex 36A to 43C Annex 44A to 50A Annex 58A to 67A Nov-97 Jun-95 CSMA/CD Overview 100Mb/s Overview 1000Mb/s Overview 10Gb/s Overview Subscriber Access MAC MII GMII MDC/MDIO Overview PLS/AUI 100BASE-T2 1000BASE-X AutoNeg XGMII OAM 10BASE5 MAU 100BASE-T4 1000BASE-SX XAUI Multi-point MAC 10BASE2 MAU 100BASE-TX 1000BASE-LX XSBI Control ANSI/IEEE 10BROAD36 MAU 100BASE-FX 1000BASE-CX 10GBASE-SR 100BASE-LX10 approved 10BASE-T MAU 100Mb/s Repeater 1000BASE-T 10GBASE-LR 100BASE-BX10 10BASE-F MAUs 100Mb/s Topology 1000Mb/s Repeater 10GBASE-ER 1000BASE-LX10 10Mb/s Repeater 1000Mb/s Topology 10GBASE-SW 1000BASE-BX10 10Mb/s Topology MAC Control 10GBASE-LW 1000BASE-PX10 IEEE Std 1802.3-2001 Auto Negotiation Link Aggregation 10GBASE-EW 1000BASE-PX20 Conformance Test 1BASE5 Management 10GBASE-LX4 10PASS-TS DTE & MAU Mgmt 10GBASE-CX4 2BASE-TL 10BASE-T Repeater Mgmt Subscriber Access Published 19-Oct-01 Maintenance 7 Topology Maintenance 6 DTE Power Maintenance 6 Maintenance 7 Maintenance 6 Maintenance 7 Maintenance 7 802.3 .3an .3aq WG 10GBASE-T 10GBASE-LRM .3as in Task Force Task Force Frame .3ap process (B. -
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. -
Fact Sheet: Single-Pair Ethernet Trade Article
Fact sheet Single Pair Ethernet Matthias Fritsche – product manager device connectivity & Jonas Diekmann – technical editor HARTING Technology group – October 2016– November 2016 Wireless technology and optical cable have already been often heralded as the future transmission technology. However, simple twisted pair cable based on plain old copper, often pronounced dead, is the most common transmission medium. Simple, robust, and perhaps with 100GBASE T1 soon to be also incredibly fast. From the beginnings of Ethernet in the 1970s, then via diverse multi-pair Ethernet developments with multiple parallel transmission paths, now apparently we are taking a step back. Back to single twisted-pair. With a new protocol and new PHYs transmission rates of up to 10 Gbit/s and PoDL capacities of up to 60 W are no longer a problem. Ultimately one pair is enough. When the team surrounding David Boggs and Robert Metcalf in the 1970s developed Ethernet at the Xerox Palo Alto Research Center (PARC), no one could foresee that this transmission method would develop so dynamically and dominate data transmission worldwide to this day. The original 10BASE5 Ethernet still used coax cable as the common medium. Today, next to wireless and optical cables, twisted-pair cable, often pronounced dead, is the most frequently used transmission medium. Starting in 1990 with 10BASE-T, the data transmission rate of the IEEE standards increased by a factor of 10 approximately every 5 years over 100BASE-TX and 1000BASE-T up to 10GBASE-T. This series could not be continued for the jump to 100GBASE-T, instead however four new IEEE standards were finalized in 2016. -
Ethernet Coax Transceiver Interface 1CY7B8392 Functional Description
CY7B8392 Ethernet Coax Transceiver Interface 1CY7B8392 Functional Description Features The CY7B8392 is a low power coaxial transceiver for Ethernet 10BASE5 and 10BASE2 applications. The device contains all • Compliant with IEEE802.3 10BASE5 and 10BASE2 the circuits required to perform transmit, receive, collision de- • Pin compatible with the popular 8392 tection, heartbeat generation, jabber timer and attachment • Internal squelch circuit to eliminate input noise unit interface (AUI) functions. In addition, the CY7B8392 fea- • Hybrid mode collision detect for extended distance tures an advanced hybrid collision detection. • Automatic AUI port isolation when coaxial connector is The transmitter output is connected directly to a double termi- not present nated 50Ω cable. • Low power BiCMOS design The CY7B8392 is fabricated with an advanced low power • 16-Pin DIP or 28-Pin PLCC BiCMOS process. Typical standby current during idle is 25 mA. Logic Block Diagram RX+ HIGH PASS AUI CCM EQUALIZATION DRIVER RX– RXI LOW PASS FILTER CD+ AUI GND – CARRIER DRIVER LOW PASS SENSE CD– FILTER + TX+ TX– – COLLISION CDS LOW PASS + RCV FILTER TXO WAVEFORM + DC/AC SHAPING SQUELCH – VEE 10 MHz CLK WATCHDOG JABBER RESET OSC TIMER26 ms TIMER0.4 sec RR+ REFERENCE 1K CIRCUIT TRANSMIT RECEIVE RR– STATE STATE MACHINE MACHINE HBE 8392–1 Pin Configurations PLCC DIP Top View Top View – RX+ CD CD+ CDS NC RXI TXO CD+ 1 16 CDS 432 1 28 2726 CD– 2 15 TXO VEE (NC) 5 25 VEE (NC) RX+ 3 14 RXI VEE (NC) 6 24 VEE V VEE 7 23 VEE (NC) EE 4 13 VEE 7B8392 7B8392 VEE 8 22 VEE (NC) VEE 5 12 RR– VEE (NC) 9 21 VEE RX– 6 11 RR+ VEE (NC) 10 20 VEE (NC) TX+ 7 10 GND VEE (NC) 11 121314 15 16 1718 RR– TX– 8 9 HBE – – TX+ TX RX 8392–3 RR+ HBE GND GND 8392–2 Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600 Document #: 38-02016 Rev.