Gigabit Ethernet

(redirected from 1G Ethernet)

Gigabit Ethernet

An Ethernet standard that transmits at 1 gigabit per second. Gigabit Ethernet (GbE, GE) connects PCs and servers in local networks and is commonly employed along with a mix of 10/100 Mbps devices. For example, a 10/100/1000 switch supports all three rates and adjusts to the highest speed between sender and receiver. All new computers and most network devices support Gigabit Ethernet.

GbE transmits full duplex from point to point using Ethernet switches and half duplex in a shared Ethernet hub environment (see CSMA/CD).

IEEE 1000Base-T (802.3ab)
The 1997 standard (IEEE 802.3z) required multimode fiber or shielded copper cables, but two years later, 1000Base-T enabled GbE to run on ordinary Cat 5 copper and be readily used in existing networks. Four wire pairs each transmit 250 Mbps in both directions.

TIA 1000Base-TX
A competing standard created by the TIA that never caught on used simpler electronics but required Cat 6 cabling. However, 1000Base-T is often erroneously labeled 1000Base-TX. See Ethernet and 10 Gigabit Ethernet.

COPPER CABLEEncoding   Cable  RangeStandard     Method     Type  (meters)1000Base-T802.3ab      4D-PAM5  Cat5-UTP  100

   1000Base-TXTIA/EIA-854  4D-PAM5  Cat6-UTP  100

   1000Base-CX802.3z       8B/10B   Cat1-STP   25

   OPTICAL CABLE (8B/10B Encoding)Fiber            ModalDiameter       Bandwidth   Range(microns)      (MHz-km)   (meters)1000Base-SX 802.3z
   62.5 multimode   160        220
   62.5 multimode   200        275
   50 multimode     400        500
   50 multimode     500        550

   62.5 multimode   500        550
   50 multimode     400        500
   50 multimode     500        550
    9 singlemode    ---       5000
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References in periodicals archive ?
Its 'neural network' includes four 'super brain' domain controllers and six computing platforms (MPU, Micro Processing Unit), connected by 1G Ethernet providing a higher transmission rate than traditional CAN networks.
Both transmitter and receiver provide a 1G Ethernet port that can connect additional network devices in the system.
A 1G Ethernet Switch allows the connection of additional network devices, and an RS232 port allows for the remote control of end devices.
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The onboard 1G Ethernet ports remain active with the 10G Ethernet card in place.<p>The 10G Ethernet ports are accessible from the rear of the BladeCenter chassis via a 10G Ethernet switch or a 10G Ethernet pass-through module.
Both transmitter and receiver come equipped with a 1G Ethernet Switch port to connect network devices.
"We know based on the migration to 1G Ethernet that customers more readily migrate to the higher speed if they can buy the high-speed box without committing up front to medium and longer reach interfaces except in those instances when they need them.
Network-based, ViSX efficiently provisions 100,000 IOPS (Input/Output Operations Per Second) with 100 percent sustained random I/O performance, that is shareable by all virtual machines on all hosts over standard 10G or 1G Ethernet networks - all in a cost effective, small footprint, multi-terabyte, and easy-to-deploy rack mount device.