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(b) Manual setting
When the manual setting is specified using the
configuration command to set the amount of power to allocate to the target port, the amount
of power to be allocated is manually calculated.
Normally, operation is performed using the class-based setting. However, if the actual
power consumption is considerably smaller than the power allocated based on the class,
operation can be economized by manually setting the allocation.
For example, when you connect a PD that is classified in Class 4 (30.0 W) according to the
class-based setting, if the actual power consumption of the PD is 18.0 W, you can manually
set the power to 20.0 W, which allows you to increase the supply power allocated to other
ports.
If you connect a PD that is Class 0 but needs 30.0 W of power supply, you need to manually
allocate the maximum amount of power.
(c) Total amount of power allocated to a port
Set the power to be supplied by PoE (total amount of power to be allocated to a port) to
370.0 W or lower. Also make sure that the amount of power supplied to PDs connected to
PoE ports satisfies the following expression:
Total amount of power available for distribution to all ports (W) >
Number of class 0 ports × output power (15.4) +
Number of class 1 ports × output power (4.0) +
Number of class 2 ports × output power (7.0) +
Number of class 3 ports × output power (15.4) +
Number of class 4 ports × output power (30.0) +
Total amount of power for the ports for which manual power allocation is set
13.10.4 Setting behavior of when the maximum power supply is exceeded
You can use the configuration to set the priority of ports that determines whether a port is to
be enabled or disabled when the maximum amount of power to be supplied is exceeded for
each of system 1 and system 2 (for AX2200S series switches) or when the maximum
supply power for the entire Switch is exceeded (for AX1240S series switches).
There are two types of operations when power consumption becomes too large as follows:
Port priority set by the configuration
Priority given to the powered ports
(1) Port priority set by the configuration
Power supply priority can be set for each port. This function helps to specify ports for which
to ensure power supply as well as ports for which to stop power supply, when power supply
becomes insufficient. If no priority is specified by the configuration, the priority is set as
high
by default. If more than one port has the same setting, the port with the lower port
number is given priority.
For an AX2200S series switch, the priority set for each port is used, and power supply to
the ports that have a higher priority within system 1 or system 2 take precedence.
For an AX1240S series switch, the priority set for each port is used, and power supply to
the ports that have a higher priority within the entire switch take precedence.
power inline allocation limit
13 Ethernet
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