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PoE Port Configuration

Use the PoE Port Configuration page to configure PoE (Power over Ethernet) settings on interfaces.

To access this page, click System > PoE > Port Configuration in the navigation menu.

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PoE Port Configuration Fields

Field Description
Interface The interface associated with the rest of the data in the row. When configuring PoE settings, this field identifies the interface(s) being configured.
Admin Mode Whether PoE is administratively enabled or disabled on the interface.
Priority The priority of the port when allocating available power. Power is delivered to the higher priority ports when needed before providing it to the lower priority ports. Possible values are Critical, High, Medium, and Low.
High Power Mode When enabled, the port supports the PoE+ power standard, which allows for providing up to 30W of power. When disabled, the port supports the original PoE standard only, which allows for providing up to 15.4W of power.
Power Limit Type The type of power limiting used for the port, which can be one of the following:
  • Class: The device class determines the power limit. The switch learns the class of the device through the receipt of LLDP (Link Layer Discovery Protocol) messages.
  • User: The power limit is user defined, overriding the LLDP information. When set, the Power Limit field is enabled.
Power Limit The power limit for the port, which can be specified. This field displays only when Power Limit Type is set to User.
Detection Type The protocol(s) that can be used to detect the presence of a PD when connected to a PoE port. The IEEE specification 802.3af (Dot3af) specifies various detection algorithms. Some PDs use legacy detection algorithms that were in place prior to the 802.3af standard, which can be one of the following:
  • Legacy: The switch uses a legacy detection scheme not defined in 802.3af.
  • 4Pt-Dot3af: The switch uses the 802.3af 4-point detection scheme only.
  • 4Pt-Dot3af + Legacy: The switch uses the 802.3af 4-point detection scheme, followed by the legacy detection scheme.
  • 2Pt-Dot3af : The switch uses the 802.3af 2-point detection scheme.
  • 2Pt-Dot3af + Legacy: The switch uses the 802.3af 2-point detection scheme, followed by the legacy detection scheme.
  • None: No detection is performed.
Timer Schedule The time range from the list of time ranges configured on the system.
Status The status of the port as a provider of PoE. Such devices are referred to as PSE. The status can be one of the following:
  • Disabled: The PSE is disabled.
  • Delivering Power: The PSE is delivering power.
  • Fault: The PSE has experienced a fault condition.
  • Test: The PSE is in test mode.
  • Other Fault: The PSE has experienced a variable error condition.
  • Searching: The PSE is transitioning between states.
  • Requesting Power: The PSE is currently not able to deliver power because power is unavailable to the port.
Fault Status The error when PSE port is in fault status, which can be one of the following:
  • None: PSE port is not in any error state.
  • MPS Absent: PSE port has detected absence of main power supply.
  • Short: PSE port has detected a short circuit condition.
  • Overload: PD connected to PSE port tried to draw more power than permissible by the hardware.
  • Power Denied: PSE port has been denied power due to administrative action or shortage of power.

To display additional PoE interface information, select an entry and click Details. The following information describes the fields in the Details window.

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PoE Port Entry Details Fields

Field Description
High Power Whether high power mode is enabled or disabled.
Max Power If Power Limit Type for the port is set to User (user defined), this field displays the configured power limit. If Power Limit Type is set to Class, this field is blank.
Class If Power Limit Type is set to Class, this field displays the class of the connected device, as learned in LLDP messages. Possible values are Unknown and Class 0 through Class 4. A higher class value indicates that the device requires higher power.
Output Voltage The voltage being applied to the connected device.
Output Current The current in milliamps being drawn by the powered device.
Output Power The power in mWatts being drawn by the connected device.
Temperature The temperature measured at the PoE port.

Use the buttons to perform the following tasks:

Published October 2018prev | next

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