The switch, in turn, can be connected to a network backbone through fiber-optic cabling connected to a Gigabit-
SX, -LX, or -LH transceiver installed in the switch. Now, all the devices on these network segments can access
other network resources that are connected elsewhere on the network backbone.
Figure 19: Example as a segment switch implementing PoE
Figure 20: Example of connecting to a backbone switch
For example, you can use an Aruba 5406R zl switch to interconnect each of your smaller work group switches to
form a larger network. All devices in this network can communicate with each other and also with the campus
backbone. Depending on your bandwidth needs, the links between switches can run at 1G or 10G, and use
Chapter 3 Installing the switch 55
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