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13 Ethernet
13.10.3 Allocating power supplied by PoE [AX1240S]
(1) Capacity limits
The following table describes the amount of power that the Switch can supply by using PoE,
and the maximum number of PDs that can connect concurrently to (can receive power
from) the switch.
Table 13-27 Maximum number of PDs that can connect concurrently to (can receive power
Item
Model
Total amount of power that the
Switch's PoE can supply
Number of PoE ports to which
PDs can be connected
#1
If the calculated power to be supplied to PDs exceeds the maximum power value
due to some cause such as the addition of PDs, power supply is blocked from ports
that have lower priority. (If the priority of the ports is the same, power supply is
blocked from the larger port numbers.)
#2
PDs that cannot be negotiated with are treated as Class 0.
#3
The maximum number of PDs that consume 30.0 W and can connect concurrently to
switch is 12. (30.0 W x 12 = 360.0 W)
(2) Allocating power to be supplied by PoE
Power to be supplied to a PD can be selected on a port-by-port basis by specifying
class-based or manual.
(a) Class-based setting
When the class-based setting is specified using the
configuration command to set the amount of power to allocate to the target port, the
allocation of the power supplied is calculated based on the class. Class-based power
allocation is handled according to Table 13-24 Power class and maximum output power of
the Switch.
200
from) the switch
Class 0 (15.4 W)
#1
Class 1 (4.0 W)
Class 2 (7.0 W)
Class 3 (15.4 W)
Class 4 (30.0 W)
Specifications
AX1240S-24P2C
370.0 W
#2
24 ports
24 ports
24 ports
24 ports
#3
12 ports
power inline allocation auto
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