IEEE 802.3 is a working group and a collection standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet. The standards are produced by the working group of Institute of Electrical and Electronics Engineers (IEEE). This is generally a local area network (LAN) technology with some wide area network (WAN) 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.
802.3 also defines LAN access method using CSMA/CD.
|1973 ||2.94 Mbit/s (367 kB/s) over coaxial cable (coax) bus. Single byte node address unique only to individual network.|
|1980||10 Mbit/s (1.25 MB/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. Six byte MAC address.|
|IEEE 802.3 standard||1983||10BASE5 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 LLC header follows the 802.3 header. Based on the CSMA/CD Process.|
|802.3a||1985||10BASE2 10 Mbit/s (1.25 MB/s) over thin Coax (a.k.a. thinnet or cheapernet)|
|802.3c||1985||10 Mbit/s (1.25 MB/s) repeater specs|
|802.3-1985||1985||a revision of the base standard from 1983|
|802.3d||1987||Fiber-optic inter-repeater link|
|802.3e||1987||1BASE5 or StarLAN, first use of (voice-grade) twisted pair cabling, 1 Mbit/s, maximum reach of 250 to 500 m|
|802.3i||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 optical fiber|
|802.3q||1993||GDMO (ISO/IEC 10165-4) format for Layer Managed Objects|
|802.3u||1995||100BASE-TX, 100BASE-T4, 100BASE-FX Fast Ethernet at 100 Mbit/s (12.5 MB/s) with autonegotiation|
|802.3x||1997||Full Duplex and flow control; 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 voice-grade twisted pair|
|802.3z||1998-07||1000BASE-X Gbit/s Ethernet over optical fiber at 1 Gbit/s (125 MB/s)|
|802.3-1998||1998-07||(802.3aa) A revision of base standard incorporating the above amendments and errata|
|802.3ab||1999-06||1000BASE-T Gbit/s Ethernet over twisted pair at 1 Gbit/s (125 MB/s)|
|802.3ac||1998-09||Max frame size extended to 1522 bytes (to allow "Q-tag") The Q-tag includes 802.1Q VLAN information and 802.1p priority information.|
|802.3ad||2000-03||Link aggregation for parallel links, since moved to IEEE 802.1AX|
|802.3-2002||2002-01||(802.3ag) A revision of base standard incorporating the three prior amendments and errata|
|802.3ae||2002-06||10 Gigabit Ethernet over fiber; 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, 10GBASE-EW|
|802.3af||2003-06||Power over Ethernet (15.4 W)|
|802.3ah||2004-06||Ethernet in the First Mile|
|802.3ak||2004-02||10GBASE-CX4 10 Gbit/s (1,250 MB/s) Ethernet over twinaxial cables|
|802.3-2005||2005-06||(802.3am) A revision of base standard incorporating the four prior amendments and errata.|
|802.3an||2006-06||10GBASE-T 10 Gbit/s (1,250 MB/s) Ethernet over unshielded twisted pair (UTP)|
|802.3ap||2007-03||Backplane Ethernet (1 and 10 Gbit/s (125 and 1,250 MB/s) over printed circuit boards)|
|802.3aq||2006-09||10GBASE-LRM 10 Gbit/s (1,250 MB/s) Ethernet over multimode fiber|
|P802.3ar||Cancelled||Congestion management (withdrawn)|
|802.3at||2009-09||Power over Ethernet enhancements (25.5 W)|
|802.3au||2006-06||Isolation requirements for Power over Ethernet (802.3-2005/Cor 1)|
|802.3av||2009-09||10 Gbit/s EPON|
|802.3aw||2007-06||Fixed an equation in the publication of 10GBASE-T (released as 802.3-2005/Cor 2)|
|802.3ax||2008-11||Link aggregation – moved to and approved as 802.1AX|
|802.3-2008||2008-12||(802.3ay) A revision of base standard incorporating the 802.3an/ap/aq/as amendments, two corrigenda and errata.|
|802.3ba||2010-06||40 Gbit/s and 100 Gbit/s Ethernet. 40 Gbit/s over 1 m backplane, 10 m Cu cable assembly (4×25 Gbit or 10×10 Gbit lanes) and 100 m of MMF and 100 Gbit/s up to 10 m of Cu cable assembly, 100 m of MMF or 40 km of SMF respectively|
|802.3-2008/Cor 1||2009||(802.3bb) Increase Pause Reaction Delay timings which are insufficient for 10 Gbit/s (workgroup name was 802.3bb)|
|802.3bc||2009-09||Move and update Ethernet related TLVs (type, length, values), previously specified in Annex F of IEEE 802.1AB (LLDP) to 802.3.|
|802.3bd||2011-06||Priority-based Flow Control. An amendment by the IEEE 802.1 Data Center Bridging 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||2011-05||(802.3be) MIB definitions for Ethernet. It consolidates the Ethernet related MIBs present in Annex 30A&B, various IETF RFCs, and 802.1AB annex F into one master document with a machine readable extract. (workgroup name was P802.3be)|
|802.3bf||2011-05||Provide an accurate indication of the transmission and reception initiation times of certain packets as required to support IEEE P802.1AS.|
|802.3bg||2011-03||Provide a 40 Gbit/s PMD which is optically compatible with existing carrier SMF 40 Gbit/s client interfaces (OTU3/STM-256/OC-768/40G POS).|
|802.3-2012||2012-08||(802.3bh) A revision of base standard incorporating the 802.3at/av/az/ba/bc/bd/bf/bg amendments, a corrigenda and errata.|
|802.3bj||2014-06||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 1 m and a 4-lane 100 Gbit/s PHY for operation over links consistent with copper twinaxial cables with lengths up to at least 5 m.|
|802.3bk||2013-08||This amendment to IEEE Std 802.3 defines the physical layer specifications and management parameters for EPON operation on point-to-multipoint passive optical networks supporting extended power budget classes of PX30, PX40, PRX40, and PR40 PMDs.|
|802.3bm||2015-02||100G/40G Ethernet for optical fiber|
|802.3bn||2016-09||10G-EPON and 10GPASS-XR, passive optical networks over coax|
|802.3bp||2016-06 ||1000BASE-T1 – Gigabit Ethernet over a single twisted pair, automotive & industrial environments|
|802.3bq||2016-06 ||25GBASE-T/40GBASE-T Ethernet for 4-pair balanced twisted pair cabling with 2 connectors over 30 m distances|
|802.3br||2016-06||Specification and Management Parameters for Interspersing Express Traffic|
|802.3bs||2017-12||200GbE (200 Gbit/s) over single-mode fiber and 400GbE (400 Gbit/s) over optical physical media|
|802.3bt||2018-09||Third generation Power over Ethernet with up to 100 W using all 4 pairs balanced twisted pair cabling (4PPoE), including 10GBASE-T, lower standby power and specific enhancements to support IoT applications (e.g. lighting, sensors, building automation).|
|802.3bu||2016-12||Power over Data Lines (PoDL) for single twisted pair Ethernet (100BASE-T1)|
|802.3bv||2017-02||Gigabit Ethernet over plastic optical fiber (POF)|
|802.3bw||2015-10 ||100BASE-T1 – 100 Mbit/s Ethernet over a single twisted pair for automotive applications|
|802.3-2015||2015-09||802.3bx – a new consolidated revision of the 802.3 standard including amendments 802.3bk/bj/bm|
|802.3by||2016-06 ||Optical fiber, twinax and backplane 25 Gigabit Ethernet |
|802.3bz||2016-09 ||2.5GBASE-T and 5GBASE-T – 2.5 Gigabit and 5 Gigabit Ethernet over Cat-5e/Cat-6 twisted pair|
|802.3ca||2020-06||25G-EPON and 50G-EPON – Downstream/Upstream rates of 25/10, 25/25, 50/10, 50/25, 50/50 Gbit/s over Ethernet Passive Optical Networks|
|802.3cb||2018-09||2.5 Gbit/s and 5 Gbit/s Operation over Backplane|
|802.3cc||2017-12||25 Gbit/s over Single Mode Fiber|
|802.3cd||2018-12||Media Access Control Parameters for 50 Gbit/s and Physical Layers and Management Parameters for 50, 100, and 200 Gbit/s Operation|
|802.3.2-2019||2019-03||802.3cf, YANG Data Model Definitions|
|802.3cg||2019-11||10BASE-T1L and 10BASE-T1S – 10 Mbit/s Single twisted pair Ethernet|
|802.3ch||2020-06||MultiGigBASE-T1 Automotive Ethernet (2.5, 5, 10 Gbit/s) over 15 m with optional PoDL|
|802.3-2018||2018-08||802.3cj – 802.3-2015 maintenance, merge recent amendments bn/bp/bq/br/bs/bu/bv/bw/by/bz/cc/ce|
|802.3ck||2022-09||100, 200, and 400 Gbit/s Ethernet using 100 Gbit/s lanes, chaired by Beth Kochuparambil |
|802.3cm||2020-01||400 Gbit/s over multimode fiber (four and eight pairs, 100 m)|
|802.3cn||2019-11||50 Gbit/s (40 km), 100 Gbit/s (80 km), 200 Gbit/s (four λ, 40 km), and 400 Gbit/s (eight λ, 40 km and single λ, 80 km over DWDM) over Single-Mode Fiber and DWDM|
|802.3cp||2021-06||10/25/50 Gbit/s single-strand optical access with at least 10/20/40 km reach, chaired by Frank Effenberger |
|802.3cq||2020-01||Power over Ethernet over 2 pairs (maintenance)|
|802.3cs||2022-09||"Super-PON" – increased-reach, 10 Gbit/s optical access with at least 50 km reach and 1:64 split ratio per wavelength pair, 16 wavelength pairs, chaired by Claudio DeSanti |
|802.3ct||2021-06||100 Gbit/s over DWDM systems (80 km reach using coherent modulation), chaired by John D'Ambrosia |
|802.3cu||2021-02||100 Gbit/s and 400 Gbit/s over SMF using 100 Gbit/s lanes|
|802.3cv||2021-05||Power over Ethernet maintenance, chaired by Chad Jones |
|802.3cw||(TBD)||400 Gbit/s over DWDM Systems – scheduled for spring 2024, chaired by John D'Ambrosia |
|802.3cx||(TBD)||Improved PTP timestamping accuracy – scheduled for early 2023, chaired by Steve Gorshe |
|802.3cy||(TBD)||MultiGigBASE-T1 Greater than 10 Gbit/s electrical automotive Ethernet – scheduled for mid 2023, chaired by Steve Carlson |
|802.3cz||(TBD)||Multi-gigabit optical automotive Ethernet – scheduled for mid 2023, chaired by Bob Grow |
|802.3da||(TBD)||10BASE-T1S 10 Mb/s operation over single balanced pair multidrop segments, extended length up to 50 m – scheduled for mid-2024, chaired by Chad Jones |
|802.3db||2022-09||100 Gbit/s, 200 Gbit/s, and 400 Gbit/s operation over optical fiber using 100 Gbit/s Signaling, chaired by Robert Lingle |
|802.3-2022||2022-07||802.3dc – 802.3-2018 maintenance, merge recent amendments bt/ca/cb/cd/cg/ch/cm/cn/cp/cq/cr/ct/cu/cv, chaired by Adam Healey |
|802.3dd||2022-06||Power over Data Lines of single-pair Ethernet maintenance, chaired by George Zimmerman |
|802.3de||2022-09||Time synchronization for point-to-point single-pair Ethernet, chaired by George Zimmerman|
|802.3df||(TBD)||200 Gb/s, 400 Gb/s and 800 Gb/s using 100 Gbit/s lanes, chaired by John D’Ambrosia|
|802.3dg||(TBD)||100BASE-T1 and 1000BASE-T1 extended length to 500 m, chaired by George Zimmerman|
|802.3dh||(TBD)||Multi-gigabit automotive Ethernet over plastic optical fiber, scheduled for 2024, chaired by Yuji Watanabe|
|802.3dj||(TBD)||200 Gb/s, 400 Gb/s, 800 Gb/s and 1.6 Tbit/s using 200 Gbit/s lanes, chaired by John D'Ambrosia|
|802.3dk||(TBD)||Greater than 50 Gbit/s bidirectional optical access, chaired by Yuanqiu Luo|
Ethernet is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET.
IEEE 802 is a family of Institute of Electrical and Electronics Engineers (IEEE) standards for local area networks (LAN), personal area network (PAN), and metropolitan area networks (MAN). The IEEE 802 LAN/MAN Standards Committee (LMSC) maintains these standards. The IEEE 802 family of standards has had twenty-four members, numbered 802.1 through 802.24, with a working group of the LMSC devoted to each. However, not all of these working groups are currently active.
100BaseVG is a 100 Mbit/s Ethernet standard specified to run over four pairs of category 3 cable. It is also called 100VG-AnyLAN because it was defined to carry both Ethernet and Token Ring frame types.
Ethernet over twisted-pair technologies use twisted-pair cables for the physical layer of an Ethernet computer network. They are a subset of all Ethernet physical layers.
In computer networking, Gigabit Ethernet is the term applied to transmitting Ethernet frames at a rate of a gigabit per second. The most popular variant, 1000BASE-T, is defined by the IEEE 802.3ab standard. It came into use in 1999, and has replaced Fast Ethernet in wired local networks due to its considerable speed improvement over Fast Ethernet, as well as its use of cables and equipment that are widely available, economical, and similar to previous standards.
StarLAN was the first IEEE 802.3 standard for Ethernet over twisted pair wiring. It was standardized by the standards association of the Institute of Electrical and Electronics Engineers (IEEE) as 802.3e in 1986, as the 1BASE5 version of Ethernet. The StarLAN Task Force was chaired by Bob Galin.
In IEEE 802 LAN/MAN standards, the medium access control sublayer is the layer that controls the hardware responsible for interaction with the wired, optical or wireless transmission medium. The MAC sublayer and the logical link control (LLC) sublayer together make up the data link layer. The LLC provides flow control and multiplexing for the logical link, while the MAC provides flow control and multiplexing for the transmission medium.
IEEE 802.15.4 is a technical standard which defines the operation of a low-rate wireless personal area network (LR-WPAN). It specifies the physical layer and media access control for LR-WPANs, and is maintained by the IEEE 802.15 working group, which defined the standard in 2003. It is the basis for the Zigbee, ISA100.11a, WirelessHART, MiWi, 6LoWPAN, Thread and SNAP specifications, each of which further extends the standard by developing the upper layers which are not defined in IEEE 802.15.4. In particular, 6LoWPAN defines a binding for the IPv6 version of the Internet Protocol (IP) over WPANs, and is itself used by upper layers like Thread.
Ethernet flow control is a mechanism for temporarily stopping the transmission of data on Ethernet family computer networks. The goal of this mechanism is to avoid packet loss in the presence of network congestion.
The physical coding sublayer (PCS) is a networking protocol sublayer in the Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet standards. It resides at the top of the physical layer (PHY), and provides an interface between the Physical Medium Attachment (PMA) sublayer and the media-independent interface (MII). It is responsible for data encoding and decoding, scrambling and descrambling, alignment marker insertion and removal, block and symbol redistribution, and lane block synchronization and deskew.
The physical-layer specifications of the Ethernet family of computer network standards are published by the Institute of Electrical and Electronics Engineers (IEEE), which defines the electrical or optical properties and the transfer speed of the physical connection between a device and the network or between network devices. It is complemented by the MAC layer and the logical link layer.
Ethernet in the first mile (EFM) refers to using one of the Ethernet family of computer network technologies between a telecommunications company and a customer's premises. From the customer's point of view, it is their first mile, although from the access network's point of view it is known as the last mile.
40 Gigabit Ethernet (40GbE) and 100 Gigabit Ethernet (100GbE) are groups of computer networking technologies for transmitting Ethernet frames at rates of 40 and 100 gigabits per second (Gbit/s), respectively. These technologies offer significantly higher speeds than 10 Gigabit Ethernet. The technology was first defined by the IEEE 802.3ba-2010 standard and later by the 802.3bg-2011, 802.3bj-2014, 802.3bm-2015, and 802.3cd-2018 standards.
IEEE 802.1AE is a network security standard that operates at the medium access control layer and defines connectionless data confidentiality and integrity for media access independent protocols. It is standardized by the IEEE 802.1 working group.
IEEE 802.11 – or more correctly IEEE 802.11-1997 or IEEE 802.11-1999 – refer to the original version of the IEEE 802.11 wireless networking standard released in 1997 and clarified in 1999. Most of the protocols described by this early version are rarely used today.
The 10 Gbit/s Ethernet Passive Optical Network standard, better known as 10G-EPON allows computer network connections over telecommunication provider infrastructure. The standard supports two configurations: symmetric, operating at 10 Gbit/s data rate in both directions, and asymmetric, operating at 10 Gbit/s in the downstream direction and 1 Gbit/s in the upstream direction. It was ratified as IEEE 802.3av standard in 2009. EPON is a type of passive optical network, which is a point-to-multipoint network using passive fiber-optic splitters rather than powered devices for fan-out from hub to customers.
10 Gigabit Ethernet is a group of computer networking technologies for transmitting Ethernet frames at a rate of 10 gigabits per second. It was first defined by the IEEE 802.3ae-2002 standard. Unlike previous Ethernet standards, 10 Gigabit Ethernet defines only full-duplex point-to-point links which are generally connected by network switches; shared-medium CSMA/CD operation has not been carried over from the previous generations Ethernet standards so half-duplex operation and repeater hubs do not exist in 10GbE.
Terabit Ethernet or TbE is Ethernet with speeds above 100 Gigabit Ethernet. 400 Gigabit Ethernet and 200 Gigabit Ethernet standards developed by the IEEE P802.3bs Task Force using broadly similar technology to 100 Gigabit Ethernet were approved on December 6, 2017. In 2016, several networking equipment suppliers were already offering proprietary solutions for 200G and 400G.
25 Gigabit Ethernet and 50 Gigabit Ethernet are standards for Ethernet connectivity in a datacenter environment, developed by IEEE 802.3 task forces 802.3by and 802.3cd and are available from multiple vendors.
IEEE 802.3bz, NBASE-T and MGBASE-T are standards for Ethernet over twisted pair at speeds of 2.5 and 5 Gbit/s. These use the same cabling as the ubiquitous Gigabit Ethernet, yet offer higher speeds. The resulting standards are named 2.5GBASE-T and 5GBASE-T.
The work of the IEEE P802.3bw 100BASE-T1 Task Force completed with the approval of IEEE Std 802.3bw-2015 by the IEEE-SA Standards Board on 27 October 2015.