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I
NTRODUCTION
 
This chapter describes the features of the Switch and some 
background information about Ethernet/Fast Ethernet 
switching technology. 
Fast Ethernet Technology 
The growing importance of LANs and the increasing 
complexity of desktop computing applications are fueling the 
need for high performance networks.  A number of high-
speed LAN technologies have been proposed to provide 
greater bandwidth and improve client/server response times.  
Among them, 100BASE-T (Fast Ethernet) provides a non-
disruptive, smooth evolution from the current 10BASE-T 
technology.  The non-disruptive and smooth evolution 
nature, and the dominating potential market base, virtually 
guarantee cost effective and high performance Fast Ethernet 
solutions in the years to come. 
100Mbps Fast Ethernet is a new standard specified by the 
IEEE 802.3 LAN committee.  It is an extension of the 
10Mbps Ethernet standard with the ability to transmit and 
receive data at 100Mbps, while maintaining the CSMA/CD 
Ethernet protocol.  Since the 100Mbps Fast Ethernet is 
compatible with all other 10Mbps Ethernet environments, it 
provides a straightforward upgrade path and takes 
advantage of the existing investment in hardware, software, 
and personnel training.