Configuring the ECN330-switch
2211553-KDU 137 365 Uen D 2006-06-16
6.8 Power Over Ethernet Settings
The ECN330 can provide DC power to a wide range of connected devices,
eliminating the need for an additional power source and cutting down on the
amount of cables attached to each device. Once configured to supply power, an
automatic detection process is initialized by the ECN330-switch that is
authenticated by a PoE signature from the connected device. Detection and
authentication prevent damage to non-compliant devices.
The ECN330-switch’s power management enables total switch power and
individual port power to be controlled within a configured power budget. Port
power can be automatically turned on and off for connected devices, and a per-
port power priority can be set so that the ECN330-switch never exceeds its
allocated power budget. When a device is connected to an ECN330 port, its
power requirements are detected by the ECN330-switch before power is
supplied. If the power required by a device exceeds the power budget of the port
or the whole switch, power is not supplied.
Ports can be set to one of three power priority levels, critical, high, or low. To
control the power supply within the ECN330-switch’s budget, ports set at critical
or high priority have power enabled in preference to those ports set at low
priority. For example, when a device is connected to a port set to critical priority,
the ECN330-switch supplies the required power, if necessary by dropping power
to ports set for a lower priority. If power is dropped to some low-priority ports and
later the power demands on the ECN330-switch fall back within its budget, the
dropped power is automatically restored.
6.8.1 ECN330-switch Power Status
Displays the Power over Ethernet parameters for the ECN330-switch.
Command Attributes
• Maximum Available Power – The configured power budget for the
ECN330-switch.
• System Operation Status – The PoE power service provided to the
ECN330 ports.
• Mainpower Consumption – The amount of power being consumed by
PoE devices connected to the ECN330.
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