HP 5820X Switch - Enabling Poe; Enabling Poe for a Poe Interface

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CAUTION:
• Before configuring PoE, make sure that the PoE power supply and PSE are operating properly;
otherwise, you cannot configure PoE or the configured PoE function does not take effect.
• Turning off the PoE power supply during the startup of the device might cause the PoE configuration
in the PoE profile invalid.
Enabling PoE
Enabling PoE for a PoE interface
The system does not supply power to or reserve power for the PDs connected to a PoE interface if the PoE
interface is not enabled with the PoE function.
You are allowed to enable PoE for a PoE interface if the PoE interface will not result in PoE power
overload; otherwise, whether you can enable PoE for the PoE interface depends on whether the PoE
interface is enabled with the PoE power management function (for more information about the PoE
interface power management function, see “Configuring PoE interface power management.”
).
• If the PoE interface is not enabled with the PoE power management function, you are not allowed to
enable PoE for the PoE interface.
• If the PoE interface is enabled with the PoE power management function, you are allowed to enable
PoE for the PoE interface (whether the PDs can be powered depends on other factors, for example,
the power supply priority of the PoE interface).
The PSE supplies power for a PoE interface in the following modes:
• Over signal wires: The PSE uses the pairs (1, 2, 3, and 6) for transmitting data in category 3/5
twisted pair cables to supply DC power while transmitting data to PDs.
• Over spare wires: The PSE uses the pairs (4, 5, 7, and 8) not transmitting data in category 3/5
twisted pair cables to supply DC power to PDs.
NOTE:
• When the sum of the power consumption of all powered PoE interfaces on a PSE exceeds the
maximum power of the PSE, the system considers the PSE overloaded (The maximum PSE power is
decided by the user configuration).
• A PSE can only supply power to a PD when the selected power supply mode is supported by both the
PSE and PD. If the PSE and PD support different power supply modes (for example, the PSE does not
support power over spare wires, but the PD supports power over spare wires), you have to change
the order of the lines in the twisted pair cable to supply power to the PD.
• The HP 5820X&5800 Switch Series only supports the signal mode.
To enable PoE for a PoE interface:
To do… Use the command… Remarks
1. Enter system view.
system-view —
2. Enter PoE interface view.
interface interface-type interface-
number
—