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Gigabit Ethernet Technology
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 is
essential to coping with the network bottlenecks that frequently develop as
computers and their bus speeds get faster and more users use applications
that 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.
802.1P and QoS
The DGS-1024D and DGS-1016D Switches support 802.1p priority
queuing Quality of Service. The implementation of QoS (Quality of
Service) and benefits of using 802.1p priority queuing are described here.
Advantages of QoS
QoS is an implementation of the IEEE 802.1p standard that allows
network administrators a method of reserving bandwidth for important
functions that require a large bandwidth or have a high priority, such as
VoIP (voice-over Internet Protocol), web browsing applications, file server
applications or video conferencing. Not only can a larger bandwidth be
created, but other less critical traffic can be limited, so bandwidth can be
saved. The Switch has separate hardware queues on every physical port to