ECS4100 Series Web Management Guide-R07

Table Of Contents
Chapter 13
| Basic Administration Protocols
Power over Ethernet
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Figure 257: Displaying LLDP Device Statistics (General)
Figure 258: Displaying LLDP Device Statistics (Port)
Power over Ethernet
The switch models listed on page 2 designated as a “PoE Switch” 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 switch that is authenticated by a PoE signature from the connected device.
Detection and authentication prevent damage to non-compliant devices (prior to
IEEE 802.3af).
The switchs power management enables individual port power to be controlled
within the switchs 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
switch never exceeds its power budget. When a device is connected to a switch
port, its power requirements are detected by the 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.