IEEE 802. 3 is a collection of IEEE standards defining the physical layer, and the media access control (MAC) sublayer of the data link layer, of wired Ethernet. The Institute of Electrical and Electronics Engineers or IEEE (read eye-triple-e) is an international Non-profit, professional organization The Physical Layer is the first level in the seven-layer OSI model of computer networking. The Media Access Control (MAC Data communication protocol sub-layer also known as the Medium Access Control is a sublayer of the Data Link Layer specified in the The Data Link Layer is Layer 2 of the seven-layer OSI model. It responds to service requests from the Network Layer and issues service requests to the Ethernet is a family of frame -based Computer networking technologies for Local area networks (LANs This is generally a LAN technology with some WAN applications. Wide Area Network ( WAN) is a Computer network that covers a broad area (i Physical connections are made between nodes and/or infrastructure devices (hubs, switches, routers) by various types of copper or fiber cable. A A router ('rautər in the USA 'rutər in the UK and Ireland, or either pronunciation in Australia and Canada is a Computer whose software and hardware are usually An optical fiber (or fibre) is a Glass or Plastic fiber that carries Light along its length
802. 3 is a technology that can support the IEEE 802.1 network architecture. IEEE 8021 is a Working group of the IEEE 802 project of the IEEE.
The maximum packet size is 1518 bytes, although to allow the Q-tag for Virtual LAN and priority data in 802. In Information technology, a packet is a formatted unit of Data carried by a Packet mode Computer network. A byte (pronounced "bite" baɪt is the basic unit of measurement of information storage in Computer science. A virtual LAN, commonly known as a VLAN, is a group of hosts with a common set of requirements that communicate as if they were attached to the Broadcast domain 3ac it is extended to 1522 bytes. If the upper layer protocol submits a protocol data unit (PDU) less than 64 bytes, 802. In Telecommunications the term protocol data unit ( PDU) has the following meanings Information that is delivered as a unit among peer A byte (pronounced "bite" baɪt is the basic unit of measurement of information storage in Computer science. 3 will pad the data field to achieve the minimum 64 bytes. The minimum Frame size will then always be of 64 bytes.
Although it is not technically correct, the terms packet and frame are often used interchangeably. In Information technology, a packet is a formatted unit of Data carried by a Packet mode Computer network. In Computer networking, a frame is a Data packet of fixed or variable length which has been encoded by a Data link layer communications protocol for digital The ISO/IEC 8802-3 and ANSI/IEEE 802. 3 standards refer to MAC sub-layer frames consisting of the destination address, the source address, length/type, data payload, and frame check sequence (FCS) fields. A frame check sequence (FCS refers to the extra Checksum characters added to a frame in a communication protocol for Error detection and correction The preamble and start frame delimiter (SFD) are (usually) together considered a header to the MAC frame. This header and the MAC frame constitute a packet.
The original Ethernet is called Experimental Ethernet today. It was developed by Robert Metcalfe in 1972 (patented in 1978) and was based in part on the wireless ALOHAnet protocol. Robert Melancton Metcalfe (born April 7, 1946 in Brooklyn, New York) is an electrical engineer from the United States who co-invented Ethernet ALOHAnet, also known as ALOHA, was a pioneering Computer networking system developed at the University of Hawaii. It is not in use anywhere, but is thought to be the only Ethernet by some purists. The first Ethernet that was generally used outside Xerox was the DIX Ethernet. Xerox Corporation ( (name ˈziːrɒks is a global document management company which manufactures and sells a range of color and black-and-white printers, multifunction Ethernet v2 framing, also known as DIX Ethernet (named after the major participants in the framing of the protocol Digital Equipment Corporation, However, as DIX Ethernet was derived from Experimental Ethernet, and as many standards have been developed that are based on DIX Ethernet, the technical community has accepted the term Ethernet for all of them. Therefore, the term Ethernet can be used to name networks using any of the following standardized media and functions:
Contents |
IEEE 802. 3 Standards
| Ethernet Standard | Date | Description |
|---|---|---|
| Experimental Ethernet | 1972 | 2. 94 Mbit/s (367 kB/s) over coaxial cable (coax) cable bus |
| Ethernet II (DIX v2. In telecommunications Bit rate or Data transfer rate is the average number of Bits characters or blocks per unit time passing between equipment in a data transmission A kilobyte (derived from the SI prefix Kilo -, meaning 1000 is a unit of Information or Computer storage equal to either 1024 0) | 1982 | 10 Mbit/s (1. 25 MB/s) over thin coax (thinnet) - Frames have a Type field. A megabyte is a unit of Information or Computer storage equal to either 106 (1000000 Bytes or 220 (1048576 bytes depending on This frame format is used on all forms of Ethernet by protocols in the Internet protocol suite. The Internet Protocol Suite (commonly TCP/IP) is the set of Communications protocols used for the Internet and other similar networks |
| IEEE 802. 3 | 1983 | 10BASE5 10 Mbit/s (1. 25 MB/s) over thick coax - same as DIX except Type field is replaced by Length, and an 802.2 LLC header follows the 802. IEEE 8022 is the IEEE 802 standard defining Logical Link Control (LLC which is the upper portion of the data link layer for Local area networks The 3 header |
| 802. 3a | 1985 | 10BASE2 10 Mbit/s (1. 25 MB/s) over thin Coax (thinnet or cheapernet) |
| 802. 3b | 1985 | 10BROAD36 |
| 802. 3c | 1985 | 10 Mbit/s (1. 25 MB/s) repeater specs |
| 802. 3d | 1987 | FOIRL (Fiber-Optic Inter-Repeater Link) |
| 802. The Ethernet physical layer is the Physical layer component of the Ethernet standard 3e | 1987 | 1BASE5 or StarLAN |
| 802. StarLAN was the first implementation of Ethernet Computer networking on Twisted pair wiring StarLAN was the first implementation of Ethernet Computer networking on Twisted pair wiring 3i | 1990 | 10BASE-T 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. In Computer networking Fast Ethernet is a collective term for a number of Ethernet standards that carry traffic at the nominal rate of 100 Mbit/s against the original 5 MB/s) w/autonegotiation |
| 802. Autonegotiation (formerly NWay) is an Ethernet procedure by which two connected devices choose common transmission parameters such as speed and duplex mode 3x | 1997 | Full Duplex and flow control; also incorporates DIX framing, so there's no longer a DIX/802. Ethernet flow control is a mechanism for temporarily stopping the transmission of data on an Ethernet Computer network. 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/s Ethernet over Fiber-Optic at 1 Gbit/s (125 MB/s) |
| 802. Gigabit Ethernet (GbE or 1 GigE is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the A gigabit is a unit of information or computer storage abbreviated Gbit (or Gb) 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. Gigabit Ethernet (GbE or 1 GigE is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second, as defined by the 3ac | 1998 | Max frame size extended to 1522 bytes (to allow "Q-tag") The Q-tag includes 802.1Q VLAN information and 802. IEEE 8021Q (also known as VLAN Tagging was a project in the IEEE 802 standards process to develop a mechanism to allow multiple bridged networks to transparently A virtual LAN, commonly known as a VLAN, is a group of hosts with a common set of requirements that communicate as if they were attached to the Broadcast domain 1p priority information. |
| 802.3ad | 2000 | Link aggregation for parallel links |
| 802. Link aggregation, or IEEE 8023ad, is a Computer networking term which describes using multiple Ethernet network cables/ports in parallel to increase the Link aggregation, or IEEE 8023ad, is a Computer networking term which describes using multiple Ethernet network cables/ports in parallel to increase the 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 over fiber; 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, 10GBASE-EW |
| 802.3af | 2003 | Power over Ethernet |
| 802.3ah | 2004 | Ethernet in the First Mile |
| 802.3ak | 2004 | 10GBASE-CX4 10 Gbit/s (1,250 MB/s) Ethernet over twin-axial cable |
| 802. Power over Ethernet or PoE technology describes a system to transfer electrical power along with data to remote devices over standard Twisted-pair cable in an Power over Ethernet or PoE technology describes a system to transfer electrical power along with data to remote devices over standard Twisted-pair cable in an Ethernet in the First Mile ( EFM) also known as IEEE 8023ah, is a collection of protocols specified in IEEE 802 Ethernet in the First Mile ( EFM) also known as IEEE 8023ah, is a collection of protocols specified in IEEE 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 Ethernet (1 and 10 Gbit/s (125 and 1,250 MB/s) over printed circuit boards) |
| 802. A backplane (or "backplane system" is a circuit board (usually a Printed circuit board) that connects several connectors in parallel to each other so A printed circuit board, or PCB, is used to mechanically support and electrically connect Electronic components using conductive pathways or traces 3aq | 2006 | 10GBASE-LRM 10 Gbit/s (1,250 MB/s) Ethernet over multimode fiber |
| 802. 3ar | On Hold | Congestion management |
| 802. 3as | 2006 | Frame expansion |
| 802. 3at | exp. 2008 | Power over Ethernet enhancements |
| 802. Power over Ethernet or PoE technology describes a system to transfer electrical power along with data to remote devices over standard Twisted-pair cable in an 3au | 2006 | Isolation requirements for Power Over Ethernet (802. 3-2005/Cor 1) |
| 802. 3av | exp. 2009 | 10 Gbit/s EPON |
| 802. A passive optical network ( PON) is a Point-to-multipoint, Fiber to the premises network architecture in which unpowered Optical splitters 3aw | 2007 | Fixed an equation in the publication of 10GBASE-T (released as 802. 3-2005/Cor 2) |
| 802. 3ax | exp 2008 | Move Link aggregation out of 802. Link aggregation, or IEEE 8023ad, is a Computer networking term which describes using multiple Ethernet network cables/ports in parallel to increase the 3 to IEEE 802.1 |
| 802. IEEE 8021 is a Working group of the IEEE 802 project of the IEEE. 3ay | exp 2008 | Maintenance to base standard |
| 802.3ba | exp. The IEEE 8023 working group is concerned with the maintenance and extension of the Ethernet data communications standard 2009 | Higher Speed Study Group. 40 Gbit/s over 1m backplane, 10m Cu cable assembly (4x25 Gbit or 10x10 Gbit lanes) and 100 m of MMF and 100 Gbit/s up to 10 m or Cu cable assembly, 100 m of MMF or 40 km of SMF respectively |
What is defined in earlier IEEE 802. Multi-mode optical fiber ( multimode fiber or MM fiber or fibre) is a type of Optical fiber mostly used for communication over shorter distances Multi-mode optical fiber ( multimode fiber or MM fiber or fibre) is a type of Optical fiber mostly used for communication over shorter distances In Fiber-optic communication, a single-mode optical fiber ( SMF) is an Optical fiber designed to carry only a single ray of light (mode 3 standards is often confused for what is used in practice: most network frames you will find on an Ethernet will be DIX frames, since the Internet protocol suite will use this format, with the type field set to the corresponding IETF protocol type. Ethernet v2 framing, also known as DIX Ethernet (named after the major participants in the framing of the protocol Digital Equipment Corporation, The Internet Protocol Suite (commonly TCP/IP) is the set of Communications protocols used for the Internet and other similar networks IEEE 802. 3x-1997 allows the 16-bit field after the MAC addresses to be used as a type field or a length field, so that DIX frames are also valid 802. 3 frames in 802. 3x-1997 and later versions of the IEEE 802. 3 Ethernet standard.
See also
- IEEE 802
- IEEE 802.1, the network architecture
- IEEE 802.11, a set of wireless networking standards
References
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. IEEE 802 refers to a family of IEEE standards dealing with Local area networks and Metropolitan area networks More specifically the IEEE 802 standards are IEEE 8021 is a Working group of the IEEE 802 project of the IEEE. IEEE 80211 is a set of standards for wireless local area network (WLAN computer communication developed by the IEEE LAN/MAN Standards Committee ( IEEE 802 Wireless network refers to any type of Computer network that is Wireless, and is commonly associated with a Telecommunications network whose interconnections The Free On-line Dictionary of Computing ( FOLDOC) is an online searchable encyclopedic Dictionary of Computing subjects The GNU Free Documentation License ( GNU FDL or simply GFDL) is a Copyleft License for free documentation designed by the Free Software
External links
- http://www.ieee802.org/3/ -- The IEEE 802. 3 Working Group
- Get IEEE 802.3 LAN/MAN CSMA/CD Access Method -- Download 802. 3 specifications.
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