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
References in periodicals archive ?
Tenders are invited for State of Colorado Redundant 1G Ethernet Connection
TELECOMWORLDWIRE-February 10, 2011-Napatech introduces new NEBS compliant adapters for 10G and 1G Ethernet networks(C)1994-2011 M2 COMMUNICATIONS http://www.
The onboard 1G Ethernet ports remain active with the 10G Ethernet card in place.
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.
Tenders are invited for Supply And Installation Of 10G Ethernet And 1G Ethernet Switches As Per Specifications Confirming To Purchasers Tender Specification Required At Barc, Trombay, Mumbai 400 085
It also features packet filtering, mirroring, forwarding, and timestamps through dedicated 10G and 1G Ethernet ports.
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.
lt;p>The VSP 9000 chassis takes up 1/3 of a data center rack and provides 10 I/O slots for three module types: 24-port 10G Ethernet SFP+, 48-port 1G Ethernet SFP and 48-port 10/100/1000Mbps Ethernet.
Designed to Capture, Inspect and Forward SONET/SDH Traffic at Speeds up to OC48/STM-16 and 1G Ethernet Traffic
Two 10G fiber Data ports and four Duplicate ports - two 10G and two 1G Ethernet - are provided, as well as one dedicated "management" port, used for remote access to data and for configuration.
Compared to 1G Ethernet, 10G Ethernet does not vary much in terms of compatibility and migration but it does provide 10X more bandwidth at a lower cost.
with Ethernet switches to bridge the backbone to 1G Ethernet interfaces.