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IEEE 802.3 | IEEE Ethernet Standards 802.3 family

This page describes IEEE 802.3 family of ethernet standards.It covers all the versions of IEEE 802.3 standards.

As we know ethernet physical layer is used in local area networks for communication between the nodes. IEEE 802.3 standard family defined various ethernet physical layers used for data communication. The table below mentions basic descriptions of each of these IEEE 802.3 standards.

Physical layer sits at layer-1 of the OSI stack. Refer OSI vs TCPIP layers for functions of each of the OSI layers. MAC resides on layer-2 of the OSI stack.

IEEE 802.3 specifications are produced by the working group and IEEE community. It defines PHY and MAC layers. In the LAN, physical connections between various nodes and other networking devices such as router, switches and Hubs are made using either copper cable or fiber optic cable.

IEEE 802.3 version Description
802.3a-1988 10BASE2 thin Ethernet
802.3c-1985 10 Mbps repeater specifications
802.3d-1987 10 Mbps fiber link
802.3i-1990 10BASE-T twisted-pair
802.3j-1993 10BASE-F fiber optic
802.3u-1995 100BASE-T Fast Ethernet and Auto-Negotiation
802.3x-1997 Full-duplex standard
802.3y-1998 100BASE-T2 100Mbps over low quality twisted pair
802.3z-1998 1000BASE-X Gigabit Ethernet
802.3ab-19991000BASE-T Gigabit Ethernet over twisted-pair
802.3ac-1998Frame size extension to 1522 bytes for VLAN tag
802.3ad-2000Link aggregation for parallel links
802.3ae-200210 Gbps Ethernet
802.3af-2003Power over Ethernet ("DTE Power via MDI")
802.3ah-2004Ethernet in the first Mile ("DTE Power via MDI")
802.3ak-200410GBASE-CX4 10 Gigabit Ethernet over short-range coaxial cable
802.3an-200610GBASE-T 10 Gigabit Ethernet over twisted-pair
802.3as-2006Frame expansion to 2,000 bytes for all tagging
802.3aq-200710GBASE-LRM 10 Gigabit over long-range fiber optic
802.3az-2010Energy-efficient Ethernet
802.3ba-201040 Gbps and 100 Gbps Ethernet

As mentioned each of the IEEE 802.3 sub-standard has speed and medium type associated with them. Refer Ethernet tutorial which describes ethernet frame types (DIX,802.3), CSMA/CD protocol, topologies, Ethernet testing and more.


Ethernet tutorial   Thicknet vs Thinnet  Broadband vs Baseband LAN  Ethernet over copper  Ethernet Business  LAN vs WAN vs MAN   What is MAC Address   Gigabit Ethernet  10 Gigabit Ethernet PHY   40 Gigabit Ethernet PHY   100 Gigabit Ethernet PHY 

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