IEEE 802.3

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.

802.3 also defines LAN access method using CSMA/CD.

Communication standards

Ethernet standard	Date	Description
Experimental Ethernet	1973[1]	2.94 Mbit/s (367 kB/s) over coaxial cable (coax) bus
Ethernet II (DIX v2.0)	1982	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.
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)
802.3b	1985	10BROAD36
802.3c	1985	10 Mbit/s (1.25 MB/s) repeater specs
802.3d	1987	Fiber-optic inter-repeater link
802.3e	1987	1BASE5 or StarLAN
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 Fiber-Optic
802.3u	1995	100BASE-TX, 100BASE-T4, 100BASE-FX Fast Ethernet at 100 Mbit/s (12.5 MB/s) w/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 low quality twisted pair
802.3z	1998	1000BASE-X Gbit/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 VLAN information and 802.1p priority information.
802.3ad	2000	Link aggregation 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	2002	10 Gigabit Ethernet over fiber; 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, 10GBASE-EW
802.3af	2003	Power over Ethernet (15.4 W)
802.3ah	2004	Ethernet in the First Mile
802.3ak	2004	10GBASE-CX4 10 Gbit/s (1,250 MB/s) Ethernet over twinaxial cables
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)
802.3aq	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 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 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	Increase Pause Reaction Delay timings which are insufficient for 10 Gbit/s (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. 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	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	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 40 Gbit/s client interfaces (OTU3/STM-256/OC-768/40G POS).
802.3-2012	2012	A revision of base standard incorporating the 802.3at/av/az/ba/bc/bd/bf/bg amendments, a corrigenda and errata.
802.3bj	June 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 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	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	100G/40G Ethernet for optical fiber
802.3bp	June 2016[2]	1000BASE-T1 – Gigabit Ethernet over a single twisted pair, automotive & industrial environments
802.3bq	June 2016[3]	25G/40GBASE-T for 4-pair balanced twisted-pair cabling with 2 connectors over 30 m distances
802.3bs	~2017	400 Gbit/s Ethernet over optical fiber using multiple 25G/50G lanes
802.3bt	~2017	Power over Ethernet enhancements up to 100 W using all 4 pairs balanced twisted-pair cabling, lower standby power and specific enhancements to support IoT applications (e.g. Lighting, sensors, building automation).
802.3bw	2015[4]	100BASE-T1 – 100 Mbit/s Ethernet over a single twisted pair for automotive applications
802.3-2015	2015	802.3bx – a new consolidated revision of the 802.3 standard including amendments 802.2bk/bj/bm
802.3by	June 2016[5]	Optical fiber, twinax and backplane 25 Gigabit Ethernet[6]
802.3bz	Sept 2016[7]	2.5 Gigabit and 5 Gigabit Ethernet over Cat-5/Cat-6 twisted pair – 2.5GBASE-T and 5GBASE-T
802.3cd	~2018	Media Access Control Parameters for 50 Gb/s and Physical Layers and Management Parameters for 50 Gb/s, 100 Gb/s, and 200 Gb/s Operation

See also

• IEEE 802
• IEEE 802.11, a set of wireless networking standards
• IEEE 802.16, a set of WiMAX standards
• IEEE Standards Association

References

1. "Ethernet Prototype Circuit Board". Smithsonian National Museum of American History. Retrieved 2014-10-31.
2. "IEEE P802.3bp 1000BASE-T1 PHY Task Force". 2016-07-29. Retrieved 2016-10-02.
3. "Approval of IEEE Std 802.3by-2016, IEEE Std 802.3bq-2016, IEEE Std 802.3bp-2016 and IEEE Std 802.3br-2016". IEEE. 2016-06-30..
4. "IEEE P802.3bw 100BASE-T1 Task Force". 2015-10-27. 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.
5. "[STDS-802-3-25G] IEEE Std 802.3by-2016 Standard Approved!". 2016-06-30.
6. P802.3by 25 Gb/s Ethernet Task Force, IEEE.
7. "[802.3_NGBASET] FW: Approval of IEEE Std 802.3bz 2.5GBASE-T and 5GBASE-T". IEEE P802.3bz Task Force. Retrieved 2016-09-24.

External links

• The IEEE 802.3 Working Group
• Get IEEE 802.3 LAN/MAN CSMA/CD Access Method—Download 802.3 specifications.