Plug And Play" Operation; Powering Devices; Priority - Avaya W310 User Manual

"Plug and Play" Operation

You can add and remove powered devices without manually reconfiguring the switch, since
it performs a periodic automatic load detection scan on non-powered ports.
• If a powered device that fits the above criteria is detected on a non-powered port, then
power is applied to the port.
• If a powered device is removed from a port, then power is denied to that port. The
disconnected port is then scanned as well.

Powering Devices

The W310 ports can receive Inline power from one of two sources: an internal -48VDC
power supply or an external DC power supply.
Each port can supply up to 15.4W by default as the maximum consumed by the powered
device.
If a powered device tries to draw more than the maximum allowed for the connected port,
power is denied and you receive an ìovercurrentî warning. Similarly, if the power drops
below the lower limit, for a port, power is denied to that port and an ìundercurrentî warning
is issued.

Priority

Since the internal power supply may not be capable of driving powered devices on all the
ports simultaneously, Avaya has implemented a priority mechanism.
This mechanism determines the order in which ports are powered after the switch is booted
and powered down if the power resources of the switch are exhausted.
There are three user-configurable priority levels:
• Low
• High
• Critical
The default value is "Low" for all ports.
Within these levels, priority is according to port number: the lower the port number, the
higher the priority.
Avaya W310 User's Guide
Chapter 13 PoE (Power over Ethernet) Features
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