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IEEE P802.3AQ DRAFT
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IEEE P802.3AQ DRAFT 2005 Edition, November 2005 INFORMATION TECHNOLOGY - TELECOMMUNICATIONS AND INFORMATION EXCHANGE BETWEEN SYSTEMS - LOCAL AND METROPOLITAN AREA NETWORKS - SPECIFIC REQUIREMENTS PART 3: CARRIER SENSE MULTIPLE ACCESS WITH COLLISION DETECTION (CSMA/CD) ACCESS METHOD AND PHYSICAL LAYER
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Description / Abstract:
IEEE Std 802.3™ was first published in 1985. Since the initial publication, many projects have added functionality or provided maintenance updates to the specifications and text included in the standard. Each IEEE 802.3 project/amendment is identified with a suffix (e.g., IEEE 802.3aq). A historical listing of projects that have added to or modified IEEE Std 802.3 is included in IEEE Std 802.3-2005.
The Media Access Control (MAC) protocol specified in IEEE Std 802.3 is Carrier Sense Multiple Access with Collision Detection (CSMA/CD). This MAC protocol was included in the experimental Ethernet developed at Xerox Palo Alto Research Center. While the experimental Ethernet had a 2.94 Mb/s data rate, IEEE Std 802.3-1985 specified operation at 10 Mb/s. Since 1985 new media options, new speeds of operation, and new capabilities have been added to IEEE Std 802.3.
Some of the major additions to IEEE Std 802.3 are identified in the marketplace with their project number. This is most common for projects adding higher speeds of operation or new protocols. For example, IEEE Std 802.3u added 100 Mb/s operation (also called Fast Ethernet), IEEE Std 802.3x specified full duplex operation and a flow control protocol, IEEE Std 802.3z added 1000 Mb/s operation (also called Gigabit Ethernet), IEEE Std 802.3ae added 10 Gb/s operation (also called 10 Gigabit Ethernet) and IEEE Std 802.3ah specified access network Ethernet (also called Ethernet in the First Mile). These major additions are all now included in IEEE Std 802.3-2005 and are not maintained as separate documents. This amendment adds additional capabilities for 10 Gb/s operation.
At the date of IEEE Std 802.3aq-20xx publication, IEEE Std 802.3 is comprised of the following documents
IEEE Std 802.3-2005
Section one -- includes Clause 1 through Clause 20 and Annex A through Annex H and Annex 4a. Section one includes the specifications for 10 Mb/s operation and the MAC, frame formats and service interfaces used for all speeds of operation.
Section two -- includes Clause 21 through Clause 33 and Annex 22A through Annex 33E. Section two includes the specifications for 100 Mb/s operation and management attributes for multiple protocols and operational speeds as well as specifications for providing power over twisted pair cabling for multiple operational speeds.
Section three -- includes Clause 34 through Clause 43 and Annex 36A through Annex 43C. Section three includes the specifications for 1000 Mb/s operation.
Section four -- includes Clause 44 through Clause 53 and Annex 44A through Annex 50A. Section four includes the specifications for 10 Gb/s operation.
Section five -- includes Clause 56 through Clause 67 and Annex 58A through Annex 67A. Section five adds new physical layers and sublayers for operation from 512 kb/s to 1000 Mb/s, and defines services and protocol elements that permit the exchange of IEEE Std 802.3 format frames between stations in a subscriber access network.
IEEE Std 802.3an-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 55 and Annex 55A. This amendment adds a new physical layer for 10 Gb/s operation over unshielded twisted pair copper cabling.
IEEE Std 802.3ap-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 69 through Clause 72 and Annex 28E. This amendment adds new physical layers that permit the exchange of IEEE Std 802.3 format frames at operational speeds of 1000 Mb/s and 10 Gb/s between devices interconnected via a backplane.
IEEE Std 802.3aq-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 68 and Annex 68A. This amendment adds a new physical layer for 10 Gb/s operation over installed multimode fiber.
IEEE Std 802.3as-20xx
This amendment includes changes to IEEE Std 802.3-2005. It extends the size of the IEEE 802.3 frame format with an envelope frame.
10 Gigabit Ethernet uses the IEEE 802.3 MAC sublayer, connected through a 10 Gigabit Media Independent Interface (XGMII) to Physical Layer entities such as 10GBASE-SR, 10GBASE-LX4, 10GBASE-CX4, 10GBASE-LRM, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, and 10GBASE-EW.
The Media Access Control (MAC) protocol specified in IEEE Std 802.3 is Carrier Sense Multiple Access with Collision Detection (CSMA/CD). This MAC protocol was included in the experimental Ethernet developed at Xerox Palo Alto Research Center. While the experimental Ethernet had a 2.94 Mb/s data rate, IEEE Std 802.3-1985 specified operation at 10 Mb/s. Since 1985 new media options, new speeds of operation, and new capabilities have been added to IEEE Std 802.3.
Some of the major additions to IEEE Std 802.3 are identified in the marketplace with their project number. This is most common for projects adding higher speeds of operation or new protocols. For example, IEEE Std 802.3u added 100 Mb/s operation (also called Fast Ethernet), IEEE Std 802.3x specified full duplex operation and a flow control protocol, IEEE Std 802.3z added 1000 Mb/s operation (also called Gigabit Ethernet), IEEE Std 802.3ae added 10 Gb/s operation (also called 10 Gigabit Ethernet) and IEEE Std 802.3ah specified access network Ethernet (also called Ethernet in the First Mile). These major additions are all now included in IEEE Std 802.3-2005 and are not maintained as separate documents. This amendment adds additional capabilities for 10 Gb/s operation.
At the date of IEEE Std 802.3aq-20xx publication, IEEE Std 802.3 is comprised of the following documents
IEEE Std 802.3-2005
Section one -- includes Clause 1 through Clause 20 and Annex A through Annex H and Annex 4a. Section one includes the specifications for 10 Mb/s operation and the MAC, frame formats and service interfaces used for all speeds of operation.
Section two -- includes Clause 21 through Clause 33 and Annex 22A through Annex 33E. Section two includes the specifications for 100 Mb/s operation and management attributes for multiple protocols and operational speeds as well as specifications for providing power over twisted pair cabling for multiple operational speeds.
Section three -- includes Clause 34 through Clause 43 and Annex 36A through Annex 43C. Section three includes the specifications for 1000 Mb/s operation.
Section four -- includes Clause 44 through Clause 53 and Annex 44A through Annex 50A. Section four includes the specifications for 10 Gb/s operation.
Section five -- includes Clause 56 through Clause 67 and Annex 58A through Annex 67A. Section five adds new physical layers and sublayers for operation from 512 kb/s to 1000 Mb/s, and defines services and protocol elements that permit the exchange of IEEE Std 802.3 format frames between stations in a subscriber access network.
IEEE Std 802.3an-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 55 and Annex 55A. This amendment adds a new physical layer for 10 Gb/s operation over unshielded twisted pair copper cabling.
IEEE Std 802.3ap-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 69 through Clause 72 and Annex 28E. This amendment adds new physical layers that permit the exchange of IEEE Std 802.3 format frames at operational speeds of 1000 Mb/s and 10 Gb/s between devices interconnected via a backplane.
IEEE Std 802.3aq-20xx
This amendment includes changes to IEEE Std 802.3-2005 and adds Clause 68 and Annex 68A. This amendment adds a new physical layer for 10 Gb/s operation over installed multimode fiber.
IEEE Std 802.3as-20xx
This amendment includes changes to IEEE Std 802.3-2005. It extends the size of the IEEE 802.3 frame format with an envelope frame.
10 Gigabit Ethernet uses the IEEE 802.3 MAC sublayer, connected through a 10 Gigabit Media Independent Interface (XGMII) to Physical Layer entities such as 10GBASE-SR, 10GBASE-LX4, 10GBASE-CX4, 10GBASE-LRM, 10GBASE-LR, 10GBASE-ER, 10GBASE-SW, 10GBASE-LW, and 10GBASE-EW.