ECS4110-28T_Management Guide

C HAPTER 14 | Basic Administration Protocols
Power over Ethernet
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SETTING THE SWITCH’S
OVERALL POE POWER
BUDGET
Use the Administration > PoE > PSE (Configure Global) page to set the
maximum PoE power budget for the switch (power available to all Gigabit
Ethernet ports). If the power demand from devices connected to the switch
exceeds the power budget, the switch uses port power priority settings to
limit the supplied power.
CLI REFERENCES
◆ "Power over Ethernet Commands" on page 1035
PARAMETERS
These parameters are displayed:
◆ PoE Maximum Available Power – The power budget for the switch.
If devices connected to the switch require more power than the switch
budget, the port power priority settings are used to control the supplied
power. (ECS4110-28P: 50000-390000 milliwatts; Default: 390000
milliwatts; ECS4110-52P: 50000-400000 milliwatts; Default: 400000
milliwatts)
◆ System Operation Status – Status of the PoE power service provided
to the switch ports.
◆ PoE Power Consumption – The amount of power being consumed by
PoE devices connected to the switch.
◆ Software Version – The version of software running on the PoE
controller subsystem in the switch.
◆ Compatible Mode – Allows the switch to detect and provide power to
powered devices that were designed prior to the IEEE 802.3af PoE
standard. (Default: Disabled)
The switch automatically detects attached PoE devices by periodically
transmitting test voltages that over the Gigabit Ethernet copper-media
ports. When an IEEE 802.3af or 802.3at compatible device is plugged
into one of these ports, the powered device reflects the test voltage
back to the switch, which may then turn on the power to this device.
When the compatibility mode is enabled, this switch can detect IEEE
802.3af or 802.3at compliant devices and the more recent 802.3af
non-compliant devices that also reflect the test voltages back to the
switch. It cannot detect other legacy devices that do not reflect back
the test voltages.
For legacy devices to be supported by this switch, they must be able to
accept power over the data pairs connected to the RJ-45 ports.
WEB INTERFACE
To set the overall PoE power budget for switch:
1. Click Administration, PoE, PSE.
2. Select Configure Global from the Step list.