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HP ProCurve - Page 12

HP ProCurve
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11
Enabling UDLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-26
Changing the Keepalive Interval . . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Changing the Keepalive Retries . . . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Configuring UDLD for Tagged Ports . . . . . . . . . . . . . . . . . . . . . . 10-27
Viewing UDLD Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-28
Configuration Warnings and Event Log Messages . . . . . . . . . . . . . . 10-31
Power Over Ethernet (PoE) Operation
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
PoE Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Introduction to PoE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
Overview of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6
General PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7
PD Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8
Determining the Amount of PoE Power Available . . . . . . . . . . . . . . 11-10
PoE Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10
Power Priority Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10
When Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . 11-10
How Is Power Allocation Prioritized? . . . . . . . . . . . . . . . . . . . . . 11-11
PoE Priority With Two or More Modules . . . . . . . . . . . . . . . . . . 11-12
Configuring PoE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
Changing the PoE Port Priority Level . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
Disabling or Re-Enabling PoE Port Operation . . . . . . . . . . . . . . . . . 11-15
Enabling Support for Pre-Standard Devices . . . . . . . . . . . . . . . . . . . 11-15
Changing the Threshold for Generating a Power Notice . . . . . . . . . 11-16
Configuring Optional PoE Port Identifiers . . . . . . . . . . . . . . . . . . . . . 11-17
Viewing PoE Configuration and Status . . . . . . . . . . . . . . . . . . . . . . . 11-19
Displaying the Switch’s Global PoE Power Status . . . . . . . . . . . . . . 11-19
Displaying an Overview of PoE Status on All Ports . . . . . . . . . . . . . 11-20
Displaying the PoE Status on Specific Ports . . . . . . . . . . . . . . . . . . . 11-21
Planning and Implementing a PoE Configuration . . . . . . . . . . . . . . 11-23
Assigning PoE Ports to VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-23
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