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Supermicro AOC-SGP-I2 dual-port Gigabit Ethernet NIC, a PCI Express ×4 card. 1000BASE-T (also known as IEEE 802.3ab) is a standard for Gigabit Ethernet over twisted-pair wiring. Each 1000BASE-T network segment is recommended to be a maximum length of 100 meters (330 feet), [5] [a] and must use Category 5 cable or better (including Cat 5e and ...
The first generation of 100 Gigabit Ethernet using 10 and 25 Gbit/s lanes was standardized in June 2010 as IEEE 802.3ba alongside 40 Gigabit Ethernet. [20] The second generation using 50 Gbit/s lanes was developed by the IEEE 802.3cd task force along with 50 and 200 Gbit/s standards. [23]
The payload limit for jumbo frames is variable: while 9000 bytes is the most commonly used limit, smaller and larger limits exist. Many Gigabit Ethernet switches and Gigabit Ethernet network interface controllers and some Fast Ethernet switches and Fast Ethernet network interface cards can support jumbo frames. [2]
Rates up to 100 Gigabit Ethernet were standardized in 2010 and 2011. [1] [2] [3] Ethernet's dominance is partly attributed to the simple advantages for the industry of adopting a single standard to drive up volumes and drive down prices.
Early Ethernet used various grades of coaxial cable, but in 1984, StarLAN showed the potential of simple unshielded twisted pair. This led to the development of 10BASE-T and its successors 100BASE-TX, 1000BASE-T, 10GBASE-T and 40GBASE-T, supporting speeds of 10 and 100 megabit per second, then 1, 10 and 40 gigabit per second respectively. [a]
The QSFP+ form factor is specified for use with the 40 Gigabit Ethernet. Copper direct attached cable (DAC) or optical modules are supported, see Figure 85–20 in the 802.3 spec. QSFP+ modules at 40 Gbit/s can also be used to provide four independent ports of 10 gigabit Ethernet. [1] 100G Transceiver Form Factors