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11-1
11
Power Over Ethernet (PoE) Operation
Contents
PoE Devices
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7
Determining the Amount of PoE Power Available . . . . . . . . . . . . . . 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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
Configuring PoE Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-16
Changing the Threshold for Generating a Power Notice . . . . . . . . . 11-17
PoE Allocation Using LLDP Information . . . . . . . . . . . . . . . . . . . . . . 11-18
Controlling PoE Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-20
Manually Configuring PoE Power Levels . . . . . . . . . . . . . . . . . . . . . . 11-20
Configuring Optional PoE Port Identifiers . . . . . . . . . . . . . . . . . . . . . 11-22
Viewing PoE Configuration and Status
. . . . . . . . . . . . . . . . . . . . . . . 11-24
Displaying the Switch’s Global PoE Power Status . . . . . . . . . . . . . . 11-24
Displaying PoE Status on All Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-26
Displaying the PoE Status on Specific Ports . . . . . . . . . . . . . . . . . . . 11-28
Displaying Information about Power Supplies . . . . . . . . . . . . . . . . . 11-31
3500-5400-6200-8200-MCG-Jan08-K_13_01.book Page 1 Monday, January 28, 2008 10:04 AM
Содержание 3500yl Series
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Страница 732: ...Copyright 2005 2008 Hewlett Packard Development Company L P January 2008 Manual Part Number 5992 3059...