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Power over Ethernet (PoE) Commands
504
ProSafe M4100 and M7100 Managed Switches
• user-defined—Allows you to define the maximum power to the port. This can be a
value from 3 through 32 watts.
no poe power limit
Use this command to set the power limit type to the default. It also sets the maximum power limit
to the default if the power limit type is user-defined.
poe power management
Use this command to configure the power management mode based on each individual PoE unit
or on all PoE units.
Both the power management modes mentioned here will power up a device based on first come,
first served. When the available power is less than the power limit defined on a port, no more
power will be delivered.
Static and dynamic modes differ in how the available power is calculated, as follows:
Static Power Management
Available power = power limit of the source - total allocated power
Where total allocated power is calculated as the power limit configured on the port.
Dynamic Power Management
Available power = power limit of the source - total allocated power
Where total allocated power is calculated as the amount of power consumed by the port.
For example:
Assume that the power limit of the source is 300 watts. One port is powered up and is drawing 3
watts of power. The power limit defined on the port is user-defined as 15 watts. In this case, the
available power for static and dynamic would be as follows:
Static Power Management
Available power = 300 watts - 15 watts = 285 watts
Format poe power limit { class-based | none | user-defined [<3000 - 32000>] }
Mode Global Config
Interface Config
Default User-defined, with a maximum of 30 watts
Format no poe power limit [user-defined]
Mode Global Config
Interface Config