IEEE 802.3

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This article is about the standards working group. For Ethernet frame data format, see Ethernet frame.

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[edit]

Ethernet StandardDateDescription
Experimental
Ethernet
1973[1]2.94 Mbit/s (367 kB/s) over coaxial cable (coax) bus
Ethernet II
(DIX v2.0)
198210 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 802.3198310BASE5 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.
802.3a198510BASE2 10 Mbit/s (1.25 MB/s) over thin Coax (a.k.a. thinnet or cheapernet)
802.3b198510BROAD36
802.3c198510 Mbit/s (1.25 MB/s) repeater specs
802.3d1987Fiber-optic inter-repeater link
802.3e19871BASE5 or StarLAN
802.3i199010BASE-T 10 Mbit/s (1.25 MB/s) over twisted pair
802.3j199310BASE-F 10 Mbit/s (1.25 MB/s) over Fiber-Optic
802.3u1995100BASE-TX, 100BASE-T4, 100BASE-FX Fast Ethernet at 100 Mbit/s (12.5 MB/s) w/autonegotiation
802.3x1997Full Duplex and flow control; also incorporates DIX framing, so there's no longer a DIX/802.3 split
802.3y1998100BASE-T2 100 Mbit/s (12.5 MB/s) over low quality twisted pair
802.3z19981000BASE-X Gbit/s Ethernet over Fiber-Optic at 1 Gbit/s (125 MB/s)
802.3-19981998A revision of base standard incorporating the above amendments and errata
802.3ab19991000BASE-T Gbit/s Ethernet over twisted pair at 1 Gbit/s (125 MB/s)
802.3ac1998Max frame size extended to 1522 bytes (to allow "Q-tag") The Q-tag includes 802.1Q VLAN information and 802.1p priority information.
802.3ad2000Link aggregation for parallel links, since moved to IEEE 802.1AX
802.3-20022002A revision of base standard incorporating the three prior amendments and errata
802.3ae200210 Gbit/s (1,250 MB/s) Ethernet over fiber; 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, 10GBASE-EW
802.3af2003Power over Ethernet (15.4 W)
802.3ah2004Ethernet in the First Mile
802.3ak200410GBASE-CX4 10 Gbit/s (1,250 MB/s) Ethernet over twinaxial cables
802.3-20052005A revision of base standard incorporating the four prior amendments and errata.
802.3an200610GBASE-T 10 Gbit/s (1,250 MB/s) Ethernet over unshielded twisted pair (UTP)
802.3ap2007Backplane Ethernet (1 and 10 Gbit/s (125 and 1,250 MB/s) over printed circuit boards)
802.3aq200610GBASE-LRM 10 Gbit/s (1,250 MB/s) Ethernet over multimode fiber
P802.3arCancelledCongestion management (withdrawn)
802.3as2006Frame expansion
802.3at2009Power over Ethernet enhancements (25.5 W)
802.3au2006Isolation requirements for Power over Ethernet (802.3-2005/Cor 1)
802.3av200910 Gbit/s EPON
802.3aw2007Fixed an equation in the publication of 10GBASE-T (released as 802.3-2005/Cor 2)
802.3-20082008A revision of base standard incorporating the 802.3an/ap/aq/as amendments, two corrigenda and errata. Link aggregation was moved to 802.1AX.
802.3az2010Energy Efficient Ethernet
802.3ba201040 Gbit/s and 100 Gbit/s Ethernet. 40 Gbit/s over 1m backplane, 10 m Cu cable assembly (4x25 Gbit or 10x10 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 12009Increase Pause Reaction Delay timings which are insufficient for 10 Gbit/s (workgroup name was 802.3bb)
802.3bc2009Move and update Ethernet related TLVs (type, length, values), previously specified in Annex F of IEEE 802.1AB (LLDP) to 802.3.
802.3bd2010Priority-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.
802.3.12011MIB 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)
802.3bf2011Provide an accurate indication of the transmission and reception initiation times of certain packets as required to support IEEE P802.1AS.
802.3bg2011Provide 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).
802.3-20122012A revision of base standard incorporating the 802.3at/av/az/ba/bc/bd/bf/bg amendments, a corrigenda and errata.
802.3bj~Mar 2014Define 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 twinaxial cables with lengths up to at least 5m.
802.3bk2013This 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.
802.3bp~May 2014Gigabit Ethernet over a single twisted pair, automotive & industrial environments
802.3bq~Feb 201640GBASE-T, 40 Gbit/s Ethernet for 4-pair balanced twisted-pair cabling with 2 connectors over 30 m distances

See also[edit]

References[edit]

  1. ^ "Ethernet Prototype Circuit Board". Smithsonian National Museum of American History. Retrieved 2007-09-02. 

External links[edit]