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Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet 

structure, format, and support for CSMA/CD protocol, full duplex, flow control, and 

management objects, but with a tenfold increase in theoretical throughput over 

100-Mbps Fast Ethernet and a hundredfold increase over 10-Mbps Ethernet. 

Since it is compatible with all 10-Mbps and 100-Mbps Ethernet environments, 

Gigabit Ethernet provides a straightforward upgrade without wasting a company’s 

existing investment in hardware, software, and trained personnel. 

The increased speed and extra bandwidth offered by Gigabit Ethernet are 

essential to coping with the network bottlenecks that frequently develop as 

computers and their busses get faster and user applications generate more traffic. 

Upgrading key components, such as your backbone and servers to Gigabit 

Ethernet can greatly improve network response times, as well as significantly 

speed up the traffic between your subnets.   

Gigabit Ethernet supports video conferencing, complex imaging, and similar 

data-intensive applications. Likewise, since data transfers occur 10 times faster 

than Fast Ethernet, servers outfitted with Gigabit Ethernet NIC’s are able to 

perform 10 times the number of operations in the same amount of time. 

 

Another key development pushing the limits of Ethernet technology is in the field 

of switching technology. A switch bridges Ethernet packets at the MAC address 

level of the Ethernet protocol transmitting among connected Ethernet or fast 

Ethernet LAN segments. 

Switching is a cost-effective way of increasing the total network capacity available 

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