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workstations, 100 Mbps full-duplex connections to power users, and 1 Gbps
full-duplex connections to servers. In addition, connected IP phones and wireless
access points are receiving PoE power from the switch.
Figure 2-1 Collapsed Backbone
Network Aggregation Plan
With 24 parallel bridging ports (i.e., 24 distinct collision domains), a Gigabit switch
can collapse a complex network down into a single efficient bridged node, increasing
overall bandwidth and throughput.
In the figure below, the 10/100/1000BASE-T ports are providing 1000 Mbps
connectivity through cascaded switches. In addition, the switches are also
connecting several servers at 1 Gbps.
Figure 2-2 Network Aggregation Plan
Servers
1 Gbps
Full Duplex
Workstations
100 Mbps
Full Duplex
Workstations
10 Mbps
Full Duplex
...
...
...
Power-over-Ethernet Devices
10/100 Mbps
Full Duplex
Server Farm
10/100/1000 Mbps Segments
...
...