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3-1

Planning and

Implementation for the 2520

and 2520G Switches

Planning and Implementation for the

2520 and 2520G Switches

This chapter discusses the planning process a user should follow to

successfully implement PoE using a 2520 or 2520G Switch. After

understanding what PoE is and its operating rules, the next step to

implementation is planning. See “General Considerations” page A-1, for an

example list of considerations during the planning phase.

Planning the PoE Configuration

This section assists you in building a PoE configuration. Using the following

examples you can plan, build, and connect PoE devices quickly and easily.

There are four configurations:

■ HP ProCurve 2520-8-PoE Switch with Gigabit Uplink

■ HP ProCurve 2520-24-PoE Switch with Gigabit Uplink

■ HP ProCurve 2520G-8-PoE Switch

■ HP ProCurve 2520G-24-PoE Switch

Each example shows a complete configuration. A table shows the PoE power

available to connected PoE devices.

Once you have selected your specific configuration and the PoE power

provided, you then add up the maximum amount of power each of your IEEE

802.3af-compliant devices require (use maximum power in watts, usually

found on a product’s data sheet). Adjust this total maximum power figure by

adding 16% to account for possible line loss. This value must be less than the

maximum power available shown in the table for your configuration.

The following examples only show the EPS connections, however, remember

these switches use a single internal power supply which provides two isolated

output voltages for switch and PoE functionality. One supply voltage provides

power for the switch functionality while the isolated voltage provides power

for the PoE functionality. If either voltage fails, the entire power supply shuts

down disconnecting all switch and PoE connections.

HP PROCURVE 2520 Planning And Implementation Guide

Other manuals for HP PROCURVE 2520