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    4. PoE
    5. Configure PoE

    Configure PoE

    Configure Power Over Ethernet (PoE) to route electrical power from your firewall to another network device.
    The following task describes the procedure for setting up PoE on your firewall.
    1. Ensure that the device you want to provide power to is connected to the firewall using an Ethernet cable through a supported PoE port on the firewall.
      Using a Cat5 or Cat6 Ethernet cable ensures the most reliable power transfer. A Cat3 cable, for example, will only be able to transfer as much as 20W.
    2. Select
      Network
      Interfaces
      Ethernet
       and choose the interface you have cabled.
    3. PoE is active on all PoE ports by default. On the Ethernet Interface window, selecting
      Advanced
       and viewing
      PoE Settings
       shows that
      PoE Enable
       is already enabled.
      You can also use the CLI to enable or disable PoE. After logging in to the firewall using terminal emulation software, enter
      configure
       followed by
      set network interface ethernet ethernet1/9 poe poe-enabled {yes | no}
       where “ethernet1/9” corresponds to the PoE port you wish to enable or disable.
      Before continuing to the next step, determine the maximum amount of power that is supported by the connected powered device (PD). This value is dependent on the type and class of the PD.
    4. Set the amount of power reserved by the port by entering a value (in Watts) for
      PoE Rsvd Pwr
      . This value must be a number between
      0
       and the Maximum Reserved Power of the port as defined in the PoE Overview. A
      0
       indicates that no power is reserved by that PoE port.
      You can also use the CLI to configure PoE reserved power. Enter
      configure
       followed by
      set network interface ethernet1/9 poe poe-rsvd-pwer <value>
       where “ethernet1/9” corresponds to the PoE port you wish to configure and “<value>” refers to the number of Watts ranging from 0 to the maximum supported by the interface.
      The total
      PoE Rsvd Pwr
       of all of your PoE ports should not exceed the Total PoE Budget Allowed. If you go over the Total PoE Budget Allowed, one or more powered devices will enter the
      Den
       (Power Denied) state until you reallocate the reserved power.
      A PoE port can also enter
      Den
       or
      Dis
       (Disabled) state based on the current Total Allocated Power. Total Allocated Power refers to the sum of all PoE ports' Reserved Power or to the sum of Actual Allocated Power permitted by all PDs. If the total Reserved Power is less than the total Actual Allocated Power, the PoE port enters the
      Dis
       or
      Den
       state.
      A PoE port in the
      Dis
       or
      Den
       state cannot be resolved by disconnecting and reconnecting the PD. Instead, use one of the following methods to resume sensing power on the connected PD:
      • Disable PoE on the interface by unchecking
        PoE Enable
        . Apply the setting and then go back to the same interface and check
        PoE Enable
        .
      • Set the affected port link state to
        auto
         or
        up
        .
      • Change the
        PoE Rsvd Pwr
         of the affected PoE port to equal or greater than the PD's power requirement.
      If no device is connected to a PoE port, ensure that either
      PoE Enable
       is unchecked or the
      PoE Rsvd Pwr
       value is
      0
       to avoid consuming a portion of the PoE budget.
    5. Click
      OK
      .
    6. Commit
       your changes.
    7. Verify the status of the PoE ports by either checking the firewall web interface or the CLI.
      1. To verify by the firewall web interface, log in to the firewall and select
        Dashboard
        Widgets
        System
        Interfaces
        . Hover the mouse over the PoE port icons, identified by a lightning bolt symbol, for specific interface details. Select
        Dashboard
        Widgets
        System
        PoE Power Budget
         for power allocation information. To view status messages and other PoE information, select
        Network
        Interfaces
        PoE
        .
      2. To verify using the CLI, enter
        show poe
         or
        show poe detail
        .

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