Managing Power over Ethernet (PoE) Power over Ethernet Defaults
OmniSwitch 6860 Hardware Users Guide October 2022 page 4-7
Disabling PoE
To disable PoE on a particular port, use the lanpower port admin-state command. For example:
-> lanpower port 1/1/12 admin-state disable
To disable PoE for all PoE-capable ports in a slot, use the lanpower slot service command. For example:
-> lanpower slot 1/1 service stop
Fast PoE
Fast PoE can be used to provide PoE power within a few seconds after powering on the chassis. Prior to
this feature PoE power was not provided until the chassis had completed boot-up. With Fast PoE the
default state of the PoE subsystem is set to enabled in the FPGA image and the PoE configuration is stored
in the controller EEPROM. This allows the chassis to immediately provide PoE power to any connected
devices immediately after being powered on without waiting for the chassis to complete the boot-up
process.
• Fast PoE requires the proper FPGA/CPLD version, refer to the release notes for additional information.
• Factory default switches that don't have any PoE configuration must have an initial PoE configuration
completed.
• The PoE configuration cannot be modified until the switch is up and the PoE software module is
completely initialized.
• LLDP-based PoE devices will not function as expected until the switch has completed the boot-up
process and the switch is in a state to respond to LLDP requests.
Perpetual PoE
Perpetual PoE allows the switch to provide uninterrupted power to connected power devices (PD) even
when the switch is rebooting or reloading, such as on a soft reset.
• Perpetual PoE requires the proper FPGA/CPLD version, refer to the release notes for additional infor-
mation.
• The power to the PD devices will be interrupted if the PoE controller (MCU) firmware itself is being
upgraded.
Configuring the Total Power Available to a Port
By default, each port is authorized by the system software to use up to a maximum amount of milliwatts to
power any attached device.
You can either increase or decrease this value based on the allowed ranges.
Increasing the total power available to an individual port may provide a more demanding Powered Device
(PD) with additional power required for operation. Decreasing the total power available to a port helps to
preserve inline power and assists in the overall management of the switch’s power budget.
To increase or decrease the total power available to an individual port, use the lanpower power
command. Since you are setting the power allowance for an individual port, you must specify chassis/slot/
port values in the command line. For example, the syntax
-> lanpower port 1/1/24 power 3000
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