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HP PROCURVE 2520

HP PROCURVE 2520
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11
Power Over Ethernet (PoE) Operation
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
Powered Device (PD) Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
Power Priority Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
When Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . . 11-5
How Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . . . 11-5
Configuring PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6
Disabling or Re-Enabling PoE Port Operation . . . . . . . . . . . . . . . . . . 11-6
Enabling Support for Pre-Standard Devices . . . . . . . . . . . . . . . . . . . . 11-6
Configuring the PoE Port Priority Level . . . . . . . . . . . . . . . . . . . . . . . 11-8
Controlling PoE Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9
Manually Configuring PoE Power Levels . . . . . . . . . . . . . . . . . . . . . . 11-10
Changing the Threshold for Generating a Power Notice . . . . . . . . . 11-12
Cycling Power on a Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13
PoE/PoE+ Allocation Using LLDP Information . . . . . . . . . . . . . . . . 11-14
LLDP with PoE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
Viewing PoE Configuration and Status . . . . . . . . . . . . . . . . . . . . . . . 11-15
Displaying the Switch’s Global PoE Power Status . . . . . . . . . . . . . . 11-15
Displaying an Overview of PoE Status on All Ports . . . . . . . . . . . . . 11-16
Displaying the PoE Status on Specific Ports . . . . . . . . . . . . . . . . . . . 11-18
11-1

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