306 Managing General System Settings
power inline high-power 
{legacy | dot3at}
Configure the port high power mode for connected-device 
compatibility.
•
legacy
—Use this mode if the device can power up (more 
than 12.95 Watts) with higher current and cannot 
identify itself as Class 4 device.
•
dot3at
—Use this mode if the device is a Class 4 device 
capable of figuring out power requirement through LLDP.
power inline limit {class 
| none | user-defined 
limit
}
Set the per-port power limit. 
•
class
—Allows the port to draw up to the advertised class 
maximum power.
•
none
—Allows port to draw up to class 0 maximum power 
in low power mode and class 4 maximum power in high 
power mode.
•
user-defined
 
limit
—Allows the port to draw up to user 
defined configured value. The range of 
limit
 is 1000-
31200 milliwatts.
power inline detection 
{dot3af | dot3af+legacy 
| legacy-only}
Set the power-management mode for the port. This 
setting overrides the mode set for the switch in global 
configuration mode.
•
802.3af-only
—IEEE 802.3af detection scheme is used. 
•
802.3af+legacy
—IEEE 802.3af 4point detection scheme 
is used and when it fails to detect a connected PD, legacy 
capacitive detection is used. 
•
legacy-only
—only legacy capacitive detection scheme is 
used. 
power inline disconnect 
{ac | dc | none}
Configure the PD disconnect type for the port.
power inline port-pair 
{alternative-a | 
alternative-b}
Specify the technique for carrying power over the cabling:
•
alternative-a
—Power is carried over the same wire pairs as 
the data.
•
alternative-b
—Power is carried over unused wire pairs in 
the cable.
power inline powered-
device 
type
Provide a description to represent the type of device 
connected to the port.
Command Purpose