H3C Technologies H3C MSR 50 - Manual (Page 173)

You can enable PoE of a PSE if the PSE will not result in PoE power overload. Otherwise, whether you can
enable PoE of the PSE depends on whether the PSE is enabled with the PoE power management function.
For more information about PSE power management, see "
Configuring PSE power management ."
• If the PSE is not enabled with the PoE power management function, you cannot enable PoE for the
PSE.
• If the PSE is enabled with the PoE power management function, you can enable PoE for the PSE.
Whether the PSE can supply power depends on other factors, such as the power supply priority of
the PSE.
When the sum of the power consumption of all PSEs exceeds the maximum power of PoE, the system
considers the PoE to be overloaded. The maximum power of PoE depends on the hardware specifications
of the PoE power supply and the user configuration.
To enable PoE for a PSE:
Step Command Remarks
405. Enter system view. system-view N/A
406. Enable PoE for the PSE. poe enable pse pse-id By default, this function is disabled.
Enabling PoE on a PoE interface
The system does not supply power to or reserve power for the PDs connected to a PoE interface unless the
PoE interface is enabled with the PoE function.
You can enable PoE on a PoE interface if the action does not result in power overload on the PSE.
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 PoE interface power
management, see " Configuring PoE interface power management ."
• If the PoE interface is not enabled with the PoE power management function, you cannot enable PoE
on the PoE interface.
• If the PoE interface is enabled with the PoE power management function, you can enable PoE on the
PoE interface. Whether the PDs can be powered depends on other factors, such as the power
supply priority of the PoE interface.
The PSE uses data pairs (pins 1, 2 and 3, 6) of category 3/5 twisted pair cable to supply DC power to
PDs.
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 as overloaded. The maximum PSE power is user
configurable.
To enable PoE for a PoE interface:
Step Command Remarks
407. Enter system view. system-view N/A
interface interface-type
interface-number
408. Enter PoE interface view. N/A
409. Enable PoE for the PoE
interface.
poe enable By default, this function is disabled.
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