Ethernet

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Ethernet

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Ethernet refers to a family of standards that together define the physical and data link layers of LAN. The Institute of Electrical and Electronics Engineers (IEEE) has defined many Ethernet standards. IEEE has defined different standards for Ethernet at the physical layer on the basis of speed and types of cabling.

10BASE-T

The name of IEEE standard for 100BASE-TX is IEEE 802.3. This is commonly known as Ethernet. It supports the maximum speed of 10Mbps. The cable type used in 10BASE-T is copper and it supports the maximum cable length of 100 meters.

100BASE-TX

The name of IEEE standard for 100BASE-TX is IEEE 802.3u. This is commonly known as Fast Ethernet. It supports the maximum speed of 100Mbps. The cable type used in 10BASE-TX is copper and it supports the maximum cable length of 100 meters.

1000BASE-LX and 1000BASE-SX

The name of IEEE standard for 1000BASE-LX/SX is IEEE 802.3z. This is commonly known as Gigabit Ethernet. It supports at the maximum speed of 1000Mbps. The cable type used in 1000BASE-LX/SX is fiber and it supports the maximum cable length of 550 meters for SX and 5000 meters for LX.

1000BASE-T

The name of IEEE standard for 1000BASE-T is IEEE 802.3ab. This is commonly known as Gigabit Ethernet. It supports the maximum speed of 1000Mbps. The cable type used in 1000BASE-T is fiber and it supports the maximum cable length of 100 meters.

The most common types of Ethernet are summarized in the table below:

Common NameAlternative NameIEEE StandardCable TypeSpeedMaximum Length
Ethernet10-BASE-TIEEE 802.3Copper10Mbps100 meters
Fast Ethernet100-BASE-TXIEEE 802.3uCopper100Mbps100 meters
Gigabit Ethernet100BASE-LXIEEE 802.3zFiber1000Mbps5000 meters
Gigabit Ethernet100BASE-SXIEEE 802.3zFiber1000Mbps550 meters
Gigabit Ethernet1000BASE-TIEEE 802.3abCopper1000Mbps100 meters


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