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Power-over-Ethernet
Configuring PoE Properties
Configuring PoE Properties
STEP 1
STEP 2
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
•
Maximum port limit allowed as a per-port numerical limit in mW (Port Limit
mode).
•
To generate a trap when a PD tries to consume too much and at what
percent of the maximum power this trap is generated.
In the Class Limit mode, the PoE-specific hardware automatically detects the PD
class and its power limit according to the class of the device connected to each
specific port.
If at any time during the connectivity an attached PD requires more power from the
switch than the configured allocation allows (no matter if the switch is in Class
Limit or Port Limit mode), the switch does the following:
•
Maintains the up/down status of the PoE port link
•
Turns off power delivery to the PoE port
•
Maintain the power delivery to other PoE ports
•
Logs the reason for turning off power
•
Generates an SNMP trap
Use the Properties page to select either the Port Limit or Class Limit mode of PoE
operation, and specify the PoE traps to be generated.
These settings are entered in advance. When the PD actually connects and is
consuming power, it might consume much less than the maximum power allowed.
Power is disabled during power-on reboot, initialization, and system configuration
to ensure that PDs are not damaged.
To configure PoE on the switch and monitor current power usage:
Click Port Management > PoE > PoE Properties.
Enter the following information:
•
Power Mode—Select one of the following options:
-
Port Limit—The maximum power limit per each port is configured by the
user.
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