3com 100 TX User Manual

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Considerations for Multisegmented Networks
3-7
Considerations 
for 
Multisegmented 
Networks
The 100BASE-T technology defined in the IEEE 802.3 standard provides for both 
homogeneous CSMA/CD 100 Mbps networks and heterogeneous 10/100 Mbps 
mixed networks. Both network topologies can be supported by connecting 
various LAN segments using repeaters and switches, bridges, or routers. 
The LinkBuilder FMS 100-TX Hub supports only the 100 Mbps network 
topology. Access to 10 Mbps functionality is possible through connections 
with switches, bridges, or routers that support 10/100 Mbps topologies. 
Two LAN segments connected by a repeater constitute a single collision 
domain. LAN segments connected by switches, bridges, or routers constitute 
multiple collision domains. You can achieve maximum network flexibility by 
designing multiple collision domain networks.
For example, a combined system containing both 10BASE-T and 100BASE-T 
devices and built with repeaters and switches can deliver dedicated 100 Mbps, 
shared 100 Mbps, dedicated 10 Mbps, and shared 10 Mbps services to devices 
on the LAN. Figure 3-7 illustrates a network composed of two collision domains 
connected by a 10/100 Mbps switching hub.