Chapter 13
| Basic Administration Protocols
Power over Ethernet
– 419 –
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.
â–
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 regardless of its priority setting.
â–
If priority is not set for any ports, and there is not sufficient power to supply
all of the ports, port priority defaults to Port 1, Port 2, Port 3 ... Port 24
13
/
48
14
, with available power being supplied in that sequence.
â–
If priority is not set for any ports, and PoE consumption exceeds the
maximum power provided by the switch, power is shut down in the reverse
sequence, starting from Port 24/48.
Parameters
These parameters are displayed in the web interface:
◆ Port – The port number on the switch.
◆ Admin Status – Enables PoE power on a port. Power is automatically supplied
when a device is detected on a port, providing that the power demanded does
not exceed the switch or port power budget. (Default: Enabled)
◆ Mode – Shows whether or not PoE power is being supplied to a port.
◆ Priority – Sets the power priority for a port. (Options: Low, High, or Critical;
Default: Low)
◆ Power Allocation – Sets the power budget for a port. (Range: 3000-30000
milliwatts; Default: 30000 milliwatts)
◆ Power Consumption – Current power consumption on a port.
Web Interface
To set the PoE power budget for a port:
1. Click Administration, PoE, PSE.
2. Enable PoE power on selected ports. Set the priority and the power allocation.
3. Click Apply.
13. ECS4620-28P
14. ECS4620-52P
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