H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – PoE
H3C S7500 Series Ethernet Switches Chapter 1
PoE Configuration
1-5
To do… Use the command… Remarks
Enable the
compatibility
detection feature for
remote PDs of the
board
poe legacy enable slot
slot-number
Optional
By default, compatibility
detection is disabled for
PDs.
 Note:
z You can successfully enable PoE on a board only when the remaining power of the
switch is not less than the full power of this board.
z The required power of PDs may exceed the power configured for them due to their
unstable status. As a result, the PDs connected to the last port on the board may be
powered off. Therefore, when you configure the maximum power value for a board,
ensure enough power for all ports of the board and reserve additional 20 W power
for instant high power at the same time.
z Once PoE is enabled on a board, the system reserves the power for the slot even
after you remove the board from the slot; in this case, you can use the undo poe
enable slot command to release this power.
z The reserved power for a blank slot will be recycled automatically if you insert a
PoE-incapable board into the slot. The reserved power for a blank slot is distributed
to the slot if you insert a different type of PoE-capable board into the slot.
z Before you enable the PoE-compatibility detection on a board, you must first enable
PoE on this board with the poe enable slot slot-num command.
z When PoE-compatibility detection is performed on non-standard devices, the
system performance will be affected. When standard 802.3af devices are
connected to the board, you are not recommended to enable the PoE-compatibility
detection feature.
1.2.4 Setting the PoE Feature of a PoE Port
Follow these steps to set the PoE management mode and PoE priority of a port:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter Ethernet port
view
interface interface-type
interface-number
—
Enable the PoE
feature
poe enable
Required
By default, the PoE feature is
enabled on a port when the PoE
feature is enabled on a board.