802.3ak

802.3ak

An IEEE standard for 10 Gigabit Ethernet over copper wire. Designed for short distances between switches in a datacenter, it uses twinaxial cables. See 10 Gigabit Ethernet.
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<p>The more evolved of the two standards, the 10GBase-CX4 specification, created by the Institute of Electrical and Electronics Engineers Inc.'s 802.3ak Task Force, enables Ethernet to run over CX4, or four twin-axial copper cable pairs.
In addition, the TN7588-S and TN7588-D adapters include the silicon solutions provider Teranetics TeraPHY TN1010 transceiver and are designed to support the IEEE 802.3an standard, while the TN7585-D dual port CX4 adapter is compliant with IEEE 802.3ak standard.
As defined in IEEE 802.3ak, copper may be the lowest cost solution (10GBASE-CX4), although its reach would be limited to 15 m, and whether Cat 5, 5e, or 6 cables can be used remains unclear.