DGS-6604
m
poe power-inline
CLI Reference Guide
485
poe power-inline
Use this command to configure the power management mode on the Power over
Ethernet (PoE) ports.
poe power-inline {auto | never | static [max
MAX-WATTAGE
]} [time-range] [
PROFILE-NAME
]
Default
The default mode is
never
(disabled).
The default power threshold value in auto mode is 16.2W, 4.2W, 7.4W and
16.2W for class-0, class-1, class-2 and class-3 respectively.
The default maximum power threshold in static mode is 17000 mW.
Command Mode
Interface configuration.
Usage Guideline
This command is supported only on PoE-capable ports. If you enter this
command on a port that does not support PoE, an error message appears to
indicate the corresponding message.
Under the static mode, if the powered device requesting more power than the
maximum power threshold, the switch removes power from the port, and the port
state will be set to "faulty" to indicate the error If the powered-device IEEE class
maximum is greater than the maximum wattage, the switch does not power the
device. The power is reclaimed into the global power budget.
In auto mode configuration, the power threshold is configured by the PoE chip
itself, and the value will be 16.2W, 4.2W, 7.4W and 16.2W for class-0, class-1,
class-2 and class-3 respectively. These threshold value will also used as the
allocated power for that port.
The maximum power threshold value in static mode is designed as 17W. The
reason is, the actual voltage which PSE side output and the actual current which
PD drains will both have the tolerance inaccuracy. Generally, the tolerance is 5%.
Thought, in the worst case, the actual power which PSE needs to offer will be
1.1025(1.05*1.05) times of maximum power consumption (15.4W) defined in
IEEE802.3af, it will be 16.9785W. This design is also for the better conformance
Syntax Description
auto
Enable powered-device detection. If enough power is available, automatically
allocate power to the PoE port after device detection based on IEEE802.3af.
never
Disable device detection, and disable power to the port.
static
Disable powered device detection. The power quantity which allowed to the port
is configured by user manually.
max
MAX-WATTAGE
(Optional) Limit the power allowed on the port. The unit is milli-watt (mW). The
range is 4000 to 17000 mW. If no value is specified, the maximum is allowed.
time-range
PROFILE-
NAME
(Optional) Specifies the name of time-range profile associated with the per-port
power-inline configuration delineating its activation period. If no PROFILE-NAME
is specified, that means to remove the time-range binding of the port instead of
disable the PoE functionality.
