Hot Swapping - Avaya G350 Administration

Configuring PoE
PoE overview
How the G350 detects a powered device
The MM314 PoE media module uses specific resistance between the power feed pairs and PD connection
verification to determine whether to supply power to a given port. The following figure shows the
process.
Figure 6: Powered Device Detection
The MM314 PoE media module applies a low voltage to the power feed pairs and measures the current.
A resistance of 19k Ω to 26.5k Ω is considered valid. If a valid signature is detected, power is supplied to
the port.
Once power is provided to a port, it is checked periodically to see if a PD is still connected. If a PD is
disconnected from a powered port, then power is denied to the port.

Hot swapping

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.
In addition, if the PoE module is removed and replaced with module of the same type, the port power
configuration of the module is retained.
92
Start Check
Valid Resistance
Yes
Signature?
Sufficient power?
No
No
Apply Power
No
connected?
Administration of the Avaya G350 Media Gateway
Yes
Yes
PD still
June 2004