Installation guide

Power Over Ethernet Settings
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Web – Click PoE, Power Port Status.
Figure 3-92 Displaying Port PoE Status
CLI – This example displays the PoE status and priority of port 1.
Configuring Port PoE Power
If a device is connected to a switch port and the switch detects that it requires more
than the power budget of the port, no power is supplied to the device (i.e., port
power remains off).
If the power demand from devices connected to switch ports exceeds the power
budget set for the switch, the port power priority settings are used to control the
supplied power. For example:
• If a device is connected to a low-priority port and causes the switch to exceed its
budget, port power is not turned on.
• If a device is connected to a critical or high-priority port and would cause the switch
to exceed its power budget as determined during booting up, power is provided to
the port only if the switch can drop power to one or more lower-priority ports and
thereby remain within its overall budget.
• If a device is connected to a port after the switch has finished booting up and would
cause the switch to exceed its budget, power will not be provided to that port.
Note:
Power is dropped from low-priority ports in sequence starting from port number 1.
Console#show power inline status 4-209
Interface Admin Oper Power(mWatt) Power(used) Priority
---------- ------- ---- ------------ ------------ --------
Eth 1/ 1 enable off 15400 0 low
Eth 1/ 2 enable off 15400 0 low
Eth 1/ 3 enable on 15400 7505 low
Eth 1/ 4 enable off 15400 0 low
Eth 1/ 5 enable off 15400 0 low
Eth 1/ 6 enable off 15400 0 low
Eth 1/ 7 enable on 15400 8597 low
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