IEEE 802.3
Encyclopedia
IEEE 802.3 is a working group
and a collection of IEEE standards produced by the working group defining the physical layer
and data link layer
's media access control
(MAC) of wired Ethernet
. This is generally a local area network
technology with some wide area network
applications. Physical connections are made between nodes and/or infrastructure devices (hubs, switches
, routers) by various types of copper or fiber cable
.
802.3 is a technology that supports the IEEE 802.1
network architecture.
Working group
A working group is an interdisciplinary collaboration of researchers working on new research activities that would be difficult to develop under traditional funding mechanisms . The lifespan of the WG can last anywhere between a few months and several years...
and a collection of IEEE standards produced by the working group defining the physical layer
Physical layer
The physical layer or layer 1 is the first and lowest layer in the seven-layer OSI model of computer networking. The implementation of this layer is often termed PHY....
and data link layer
Data link layer
The data link layer is layer 2 of the seven-layer OSI model of computer networking. It corresponds to, or is part of the link layer of the TCP/IP reference model....
's media access control
Media Access Control
The media access control data communication protocol sub-layer, also known as the medium access control, is a sublayer of the data link layer specified in the seven-layer OSI model , and in the four-layer TCP/IP model...
(MAC) of wired Ethernet
Ethernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
. This is generally a local area network
Local area network
A local area network is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building...
technology with some wide area network
Wide area network
A wide area network is a telecommunication network that covers a broad area . Business and government entities utilize WANs to relay data among employees, clients, buyers, and suppliers from various geographical locations...
applications. Physical connections are made between nodes and/or infrastructure devices (hubs, switches
Network switch
A network switch or switching hub is a computer networking device that connects network segments.The term commonly refers to a multi-port network bridge that processes and routes data at the data link layer of the OSI model...
, routers) by various types of copper or fiber cable
Optical fiber
An optical fiber is a flexible, transparent fiber made of a pure glass not much wider than a human hair. It functions as a waveguide, or "light pipe", to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of...
.
802.3 is a technology that supports the IEEE 802.1
IEEE 802.1
IEEE 802.1 is a working group of the IEEE 802 project of the IEEE Standards Association.It is concerned with:* 802 LAN/MAN architecture* internetworking among 802 LANs, MANs and other wide area networks* 802 Link Security* 802 overall network management...
network architecture.
Communication Standards
| Ethernet Standard | Date | Description |
|---|---|---|
| Experimental Ethernet |
1973 | 2.94 Mbit/s (367 kB Kilobyte The kilobyte is a multiple of the unit byte for digital information. Although the prefix kilo- means 1000, the term kilobyte and symbol KB have historically been used to refer to either 1024 bytes or 1000 bytes, dependent upon context, in the fields of computer science and information... /s) over coaxial cable (coax) cable bus |
| Ethernet II (DIX v2.0) |
1982 | 10 Mbit/s (1.25 MB Megabyte The megabyte is a multiple of the unit byte for digital information storage or transmission with two different values depending on context: bytes generally for computer memory; and one million bytes generally for computer storage. The IEEE Standards Board has decided that "Mega will mean 1 000... /s) over thick coax. Frames have a Type field. This frame format is used on all forms of Ethernet by protocols in the Internet protocol suite Internet protocol suite The Internet protocol suite is the set of communications protocols used for the Internet and other similar networks. It is commonly known as TCP/IP from its most important protocols: Transmission Control Protocol and Internet Protocol , which were the first networking protocols defined in this... . |
| IEEE 802.3 | 1983 | 10BASE5 10BASE5 10BASE5 was the original commercially available variant of Ethernet.For its physical layer it used cable similar to RG-8/U coaxial cable but with extra braided shielding. This is a stiff, diameter cable with an impedance of 50 ohms , a solid center conductor, a foam insulating filler, a shielding... 10 Mbit/s (1.25 MB/s) over thick coax. Same as Ethernet II (above) except Type field is replaced by Length, and an 802.2 IEEE 802.2 IEEE 802.2 is the IEEE 802 standard defining Logical Link Control , which is the upper portion of the data link layer of the OSI Model. The LLC sublayer presents a uniform interface to the user of the data link service, usually the network layer... LLC header follows the 802.3 header |
| 802.3a | 1985 | 10BASE2 10BASE2 10BASE2 is a variant of Ethernet that uses thin coaxial cable , terminated with BNC connectors... 10 Mbit/s (1.25 MB/s) over thin Coax (a.k.a. thinnet or cheapernet) |
| 802.3b | 1985 | 10BROAD36 10BROAD36 10BROAD36 is an obsolete computer network standard in the Ethernet family. It was developed during the 1980s and specified in IEEE 802.3b-1985.... |
| 802.3c | 1985 | 10 Mbit/s (1.25 MB/s) repeater specs |
| 802.3d | 1987 | Fiber-optic inter-repeater link Fiber-optic inter-repeater link Fiber-optic inter-repeater link is a specification of Ethernet over optical fibre. It was replaced by 10BASE-FL.... |
| 802.3e | 1987 | 1BASE5 or StarLAN StarLAN StarLAN was the first implementation of 1 megabit per second Ethernet over twisted pair wiring. It was standardized by the standards association of the Institute of Electrical and Electronics Engineers as 802.3e in 1986, as the 1BASE5 version of Ethernet.-Description:StarLAN was developed by AT&T... |
| 802.3i | 1990 | 10BASE-T 10BASE-T Ethernet over twisted pair technologies use twisted-pair cables for the physical layer of an Ethernet computer network. Other Ethernet cable standards employ coaxial cable or optical fiber. Early versions developed in the 1980s included StarLAN followed by 10BASE-T. By the 1990s, fast, inexpensive... 10 Mbit/s (1.25 MB/s) over twisted pair |
| 802.3j | 1993 | 10BASE-F 10 Mbit/s (1.25 MB/s) over Fiber-Optic |
| 802.3u | 1995 | 100BASE-TX, 100BASE-T4, 100BASE-FX Fast Ethernet at 100 Mbit/s (12.5 MB/s) w/autonegotiation Autonegotiation Autonegotiation is an Ethernet procedure by which two connected devices choose common transmission parameters, such as speed, duplex mode, and flow control. In this process, the connected devices first share their capabilities regarding these parameters and then choose the highest performance... |
| 802.3x | 1997 | Full Duplex and flow control Ethernet flow control Ethernet flow control is a mechanism for temporarily stopping the transmission of data on Ethernet family computer networks.-Description:Ethernet is a popular family of computer network protocols. Flow control can be implemented at the data link layer... ; also incorporates DIX framing, so there's no longer a DIX/802.3 split |
| 802.3y | 1998 | 100BASE-T2 100 Mbit/s (12.5 MB/s) over low quality twisted pair |
| 802.3z | 1998 | 1000BASE-X Gbit Gigabit The gigabit is a multiple of the unit bit for digital information or computer storage. The prefix giga is defined in the International System of Units as a multiplier of 109 , and therefore... /s Ethernet over Fiber-Optic at 1 Gbit/s (125 MB/s) |
| 802.3-1998 | 1998 | A revision of base standard incorporating the above amendments and errata |
| 802.3ab | 1999 | 1000BASE-T Gbit/s Ethernet over twisted pair at 1 Gbit/s (125 MB/s) |
| 802.3ac | 1998 | Max frame size extended to 1522 bytes (to allow "Q-tag") The Q-tag includes 802.1Q IEEE 802.1Q IEEE 802.1Q is the networking standard that supports Virtual LANs on an Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames... VLAN information and 802.1p priority information. |
| 802.3ad | 2000 | Link aggregation Link aggregation Link aggregation or trunking or link bundling or Ethernet/network/NIC bonding or NIC teaming are computer networking umbrella terms to describe various methods of combining multiple network connections in parallel to increase throughput beyond what a single connection could sustain, and to provide... for parallel links, since moved to IEEE 802.1AX |
| 802.3-2002 | 2002 | A revision of base standard incorporating the three prior amendments and errata |
| 802.3ae | 2003 | 10 Gbit/s (1,250 MB/s) Ethernet 10 Gigabit Ethernet The 10 gigabit Ethernet computer networking standard was first published in 2002. It defines a version of Ethernet with a nominal data rate of 10 Gbit/s , ten times faster than gigabit Ethernet.10 gigabit Ethernet defines only full duplex point to point links which are generally connected by... over fiber; 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, 10GBASE-EW |
| 802.3af | 2003 | Power over Ethernet Power over Ethernet Power over Ethernet or PoE technology describes a system to pass electrical power safely, along with data, on Ethernet cabling. The IEEE standard for PoE requires category 5 cable or higher for high power levels, but can operate with category 3 cable for low power levels... (12.95 W) |
| 802.3ah | 2004 | Ethernet in the First Mile Ethernet in the First Mile Ethernet in the first mile refers to using one of the Ethernet family of computer network protocols between a telecommunications company and a customer's premise. From the customer's point of view it is their "first" mile, although from the access networks' point of view it is known as the "last... |
| 802.3ak | 2004 | 10GBASE-CX4 10 Gbit/s (1,250 MB/s) Ethernet over twin-axial cable |
| 802.3-2005 | 2005 | A revision of base standard incorporating the four prior amendments and errata. |
| 802.3an | 2006 | 10GBASE-T 10 Gbit/s (1,250 MB/s) Ethernet over unshielded twisted pair (UTP) |
| 802.3ap | 2007 | Backplane Backplane A backplane is a group of connectors connected in parallel with each other, so that each pin of each connector is linked to the same relative pin of all the other connectors forming a computer bus. It is used as a backbone to connect several printed circuit boards together to make up a complete... Ethernet (1 and 10 Gbit/s (125 and 1,250 MB/s) over printed circuit board Printed circuit board A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. It is also referred to as printed wiring board or etched wiring... s) |
| 802.3aq | 2006 | 10GBASE-LRM 10 Gbit/s (1,250 MB/s) Ethernet over multimode fiber |
| P802.3ar | Cancelled | Congestion management (withdrawn) |
| 802.3as | 2006 | Frame expansion |
| 802.3at | 2009 | Power over Ethernet Power over Ethernet Power over Ethernet or PoE technology describes a system to pass electrical power safely, along with data, on Ethernet cabling. The IEEE standard for PoE requires category 5 cable or higher for high power levels, but can operate with category 3 cable for low power levels... enhancements (25.5 W) |
| 802.3au | 2006 | Isolation requirements for Power Over Ethernet (802.3-2005/Cor 1) |
| 802.3av | 2009 | 10 Gbit/s EPON |
| 802.3aw | 2007 | Fixed an equation in the publication of 10GBASE-T (released as 802.3-2005/Cor 2) |
| 802.3-2008 | 2008 | A revision of base standard incorporating the 802.3an/ap/aq/as amendments, two corrigenda and errata. Link aggregation was moved to 802.1AX. |
| 802.3az | 2010 | Energy Efficient Ethernet |
| 802.3ba | 2010 | 40 Gbit/s and 100 Gbit/s Ethernet. 40 Gbit/s over 1m backplane, 10m Cu cable assembly (4x25 Gbit or 10x10 Gbit lanes) and 100 m of MMF Multi-mode optical fiber Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus... and 100 Gbit/s up to 10 m of Cu cable assembly, 100 m of MMF Multi-mode optical fiber Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus... or 40 km of SMF Single-mode optical fiber In fiber-optic communication, a single-mode optical fiber is an optical fiber designed to carry only a single ray of light . Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining Maxwell's equations and the boundary conditions... respectively |
| 802.3-2008/Cor 1 | 2009 | Increase Pause Reaction Delay timings which are insufficient for 10G/sec (workgroup name was 802.3bb) |
| 802.3bc | 2009 | Move and update Ethernet related TLVs (type, length, values), previously specified in Annex F of IEEE 802.1AB (LLDP) to 802.3. |
| 802.3bd | 2010 | Priority-based Flow Control. A amendment by the IEEE 802.1 IEEE 802.1 IEEE 802.1 is a working group of the IEEE 802 project of the IEEE Standards Association.It is concerned with:* 802 LAN/MAN architecture* internetworking among 802 LANs, MANs and other wide area networks* 802 Link Security* 802 overall network management... Data Center Bridging Data center bridging Data center bridging refers to a set of enhancements to Ethernet local area networks for use in data center environments. Specifically, DCB goals are, for selected traffic, to eliminate loss due to queue overflow and to be able to allocate bandwidth on links. Essentially, DCB enables, to some... Task Group (802.1Qbb) to develop an amendment to IEEE Std 802.3 to add a MAC Control Frame to support IEEE 802.1Qbb Priority-based Flow Control. |
| 802.3.1 | 2011 | MIB definitions for Ethernet. It consolidates the Ethernet related MIBs Management information base A management information base is a virtual database used for managing the entities in a communications network. Most often associated with the Simple Network Management Protocol , the term is also used more generically in contexts such as in OSI/ISO Network management model... present in Annex 30A&B, various IETF RFC Request for Comments In computer network engineering, a Request for Comments is a memorandum published by the Internet Engineering Task Force describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems.Through the Internet Society, engineers and... s, and 802.1AB annex F into one master document with a machine readable extract. (workgroup name was P802.3be) |
| 802.3bf | 2011 | Provide an accurate indication of the transmission and reception initiation times of certain packets as required to support IEEE P802.1AS. |
| 802.3bg | 2011 | Provide a 40 Gbit/s PMD which is optically compatible with existing carrier SMF Single-mode optical fiber In fiber-optic communication, a single-mode optical fiber is an optical fiber designed to carry only a single ray of light . Modes are the possible solutions of the Helmholtz equation for waves, which is obtained by combining Maxwell's equations and the boundary conditions... 40 Gbit/s client interfaces (OTU3/STM-256/OC-768/40G POS). |
| 802.3bh | ~Mar 2012 | A revision of base standard incorporating the 802.3at/av/az/ba/bc/bd/bf/bg amendments, a corrigenda and errata. (Expected to be published as 802.3-2012) |
| 802.3bj | ~Mar 2014 | Define a 4-lane 100 Gbit/s backplane PHY for operation over links consistent with copper traces on “improved FR-4” (as defined by IEEE P802.3ap or better materials to be defined by the Task Force) with lengths up to at least 1m and a 4-lane 100 Gbit/s PHY for operation over links consistent with copper twin-axial cables with lengths up to at least 5m. |
See also
- IEEE 802IEEE 802IEEE 802 refers to a family of IEEE standards dealing with local area networks and metropolitan area networks.More specifically, the IEEE 802 standards are restricted to networks carrying variable-size packets. IEEE 802 refers to a family of IEEE standards dealing with local area networks and...
- IEEE 802.11IEEE 802.11IEEE 802.11 is a set of standards for implementing wireless local area network computer communication in the 2.4, 3.6 and 5 GHz frequency bands. They are created and maintained by the IEEE LAN/MAN Standards Committee . The base version of the standard IEEE 802.11-2007 has had subsequent...
, a set of wireless networking standards - IEEE 802.16IEEE 802.16IEEE 802.16 is a series of Wireless Broadband standards authored by the Institute of Electrical and Electronics Engineers . The IEEE Standards Board in established a working group in 1999 to develop standards for broadband Wireless Metropolitan Area Networks...
, a set of WiMAXWiMAXWiMAX is a communication technology for wirelessly delivering high-speed Internet service to large geographical areas. The 2005 WiMAX revision provided bit rates up to 40 Mbit/s with the 2011 update up to 1 Gbit/s for fixed stations...
standards
External links
- The IEEE 802.3 Working Group
- Get IEEE 802.3 LAN/MAN CSMA/CD Access Method—Download 802.3 specifications.