Plug And Play Operation; Powering Devices - Avaya G250 Administration

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
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power is applied to the port.
If a powered device is removed from a port, then power is denied to that port. The
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disconnected port is then scanned as well.
In addition, if the PoE module in the G350 is removed and replaced with a module of the same
type, the port power configuration of the module is retained.

Powering devices

The Avaya G350 MM314 PoE media module has its own power supply. Therefore, a full 210 W
of power is available for PDs. Each port can supply up to 19.5 W by default. If a powered device
tries to draw more than the maximum allowed power per port, power is denied.
The G250 has 92 W of power available for PDs. Each port can supply up to 18.8 W by default. If
a powered device tries to draw more than the maximum allowed power per port, power is
denied.
Since 210 W on the G350 MM314 PoE media module and 92 W on the G250 may not be
enough for driving powered devices on all the ports simultaneously, a priority mechanism exists.
The priority mechanism determines the order in which ports are powered after the switch is
booted.
There are three user-configurable PoE priority levels:
Low
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High
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Critical
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The default value for all ports is Low.
Power is automatically applied to PDs according to their priority when the power budget
increases. If the power budget is exceeded, power is not provided to a new PD when you attach
it, even if you define its priority as High or Critical.
Note:
The order in which ports are powered within the same priority group is not
Note:
sequential.
PoE overview
Issue 1.1 June 2005 195