PoE (Power over Ethernet) is a technology for wired ethernet LANs that delivers the electrical current over ethernet cables to power a device without the power cord. So ethernet cables carries both data and current together to operate devices like Wi-Fi access points.
In TejNOS-EN, Type-1 PD's (Powered Devices) are supported.
This chapter describes the PoE (Power over Ethernet) commands available in the TejNOS-EN CLI. The commands in this chapter are in one of three functional groups:
Configuration commands: Configure PoE modes of the switch. For every configuration command, there is a show command that displays the configuration setting.
Show commands: Display poe settings, statistics, and other information.
Clear commands: Clear some or all of the poe interfaces events zero.
poe enable
This command is used to enable poe feature in the system.
Default: enable
Format: poe enable
Mode: Global config
Info: Enabling of PoE in global config mode will not directly enable the power on individual ports. Enabling of power on port in interface config mode must needed to power a device using that port.
no poe enable
This command is used to disable poe feature in the system.
Default: enable
Format: no poe enable
Mode: Global config
Info: Disabling of PoE globally will disable the power on all the individual ports.
poe threshold <1-99>
This command is used to set the power usage threshold in percentage for usage notifications purpose.
Default : 90%
Format : poe threshold <1-99>
Mode : Global config
Info : If power allocation in PSE reaches the threshold, notification will be triggered to registered user.
poe notifications
This command is used to enable the notifications(power usage threshold, power On/Off) from PoE device.
Default: Disable
Format: poe notifications
Mode: Global config
Info: If power usage in PSE reaches the threshold or if a PD powered On/Off, notification will be triggered to registered user.
no poe notifications
This command is used to disable the notifications (power usage threshold, power On/Off) from PoE device.
Default: Disable
Format: no poe notifications
Mode: Global config
Info: If power usage in PSE reaches the threshold or if a PD powered On/Off, notification will not be triggered to registered user.
poe mode
This command is used to enable or disable power on particular port.
Default: Disable
Format: poe mode {disable | poe | poe+}
Mode: Interface config
Parameter description
disable: Disables poe operation.
poe: Enables PoE IEEE 802.3af (Class 3/4 limited to 15.4W)
poe+: Enables PoE+ IEEE 802.3at (Class 4 limited to 30.0W)
show poe
This command is used to display the overall status of PSE.
Format: show poe
Mode: Privileged EXEC
The display parameters for above command are:
PoE Admin Status: Shows the PoE admin status of system
PoE Device Operational Status: Shows the PoE device operational status of PSE
Source Power: Shows the total input power(410W)
Consumed Power: Shows the current total consumed power by PD's
Allocated Power: Shows the total allocated power based on PD's classifications
Remaining Power: Shows the remaining available power
Threshold Set: Shows the configured power usage threshold
Notification Flag: Shows the status of notification flag (Disable/Enable)
show poe port
This command is used to display the PoE status of specific port.
Format: show poe port <unit/slot/port>
Mode: Privileged EXEC
The display parameters for above command are:
PoE Admin Status: Shows the PoE admin status of this port
PoE operational Status: Shows the PoE Operational status of port
Detection Status: Shows the PoE detection state of a port
Classification Status: Shows the PoE classification state of a port
Power Consumption Status: Shows the amount of power drawn by the device over this port
Invalid PD detected: Counter for invalid powered devices
Cut-off current violation: Counter is incremented when cut-off current limit set is exceeded
Current limit violation: Counter is incremented when limiting current limit set is exceeded
Power-On delay timeout: Counter is incremented when powered device is not powered on within 400ms
Power denined due to lack of power in system: Counter is incremented when there is no enough power to supply to the powered device
MOSFET fail status: Counter increments when there is hardware failure of POE
show poe port all
This command is used to display the PoE summary of all the PoE capable ports.
Format: show poe port all
Mode: privileged EXEC
The display parameters for above command are given below:
Interface
Admin Mode
Operational Status
Power Consumed
Power Allocated
1/0/1
Disable
Down
0.0
0.0
1/0/2
Disable
Down
0.0
0.0
1/0/3
Disable
Down
0.0
0.0
1/0/4
Disable
Down
0.0
0.0
1/0/5
Disable
Down
0.0
0.0
1/0/6
Disable
Down
0.0
0.0
1/0/7
Disable
Down
0.0
0.0
show interface poe
This command is used to display the PoE statistics of specific port.
Format: show interface poe <unit/slot/port>
Mode: Privileged EXEC
The display parameters for above command are:
Invalid Signature(PD) Stats: Shows the number of times the port detected "Invalid PD".
Power Denied Stats: Shows the number of times the port not delivered the power to the PD due to insufficient power in the system.
clear poe-counters
This command is used to clear the PoE events of specific port.
Format: clear poe-counters <unit/slot/port>
Mode: Privileged EXEC
This command will reset(0) the "Invalid Signature(PD)" stats and "Power denied" stats of this interface.
clear poe-counters all
This command is used to clear the PoE events of all poe capable ports.
Format: clear poe-counters all
Mode: Privileged EXEC
Info: This command will reset(0) the "Invalid Signature(PD)" stats and "Power denied" stats of all the PoE capable interfaces of system.
