Setting The Poe Feature Of A Poe Port - H3C S7500 Series Operation Manual

Operation Manual – PoE
H3C S7500 Series Ethernet Switches
To do...
Enable the
compatibility
detection feature for
remote PDs of the
board
Note:
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.
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.
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.
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.
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.
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...
Enter system view
Enter Ethernet port
view
Enable the PoE
feature
Use the command...
poe legacy enable slot
slot-number
Use the command...
system-view
interface interface-type
interface-number
poe enable
1-5
Chapter 1 PoE Configuration
Remarks
Optional
By default, compatibility
detection is disabled for
PDs.
Remarks
—
—
Required
By default, the PoE feature is
enabled on a port when the PoE
feature is enabled on a board.