3Com S7906E - Switch, Руководство по настройке

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Before configure PoE, make sure that the PoE power supply and PSE is operating normally;
otherwise, you cannot configure PoE or the configured PoE function does not take effect.
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Turning off the PoE power supply during the startup of the device might cause the PoE
configuration in the startup profile invalid.
Enabling PoE
Enabling PoE for a PSE
If the PoE function is not enabled for a PSE, the system does not supply power or reserve power for
the PSE.
You are allowed to 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 the detailed description of the PoE power management function, refer to
Configuring PoE Power Management ).
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If the PSE is not enabled with the PoE power management function, you are not allowed to enable
PoE for the PSE.
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If the PSE is enabled with the PoE power management function, you are allowed to enable PoE
for the PSE (whether the PSE can supply power depends on other factors, for example, the power
supply priority of the PSE).
Follow these steps to enable PoE for a PSE:
To do… Use the command… Remarks
Enter system view system-view —
Enable PoE for the
PSE
poe enable pse pse-id
Required
Disabled by default.
When the sum of the power consumption of all PSEs exceeds the maximum power of PoE, the system
considers the PoE is overloaded (The maximum PoE power is decided by the hardware specifications
of a PoE power supply and the user configuration).
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