Troubleshooting Tip: FortiSwitch not providing power to GRANDSTREAM GXP2160 VoIP Phone

Before proceeding with the firmware upgrade, open a support case with TAC to request the PoE firmware image. Include the following information in the ticket:

Output of the following command from the FortiSwitch:

diagnose debug report

Confirmation of the IP phone model (for example, GXP2160).

Once the firmware image is provided by TAC, follow the steps below.

Step 1: Verify the PoE Firmware Version.
Use the command below to verify whether the FortiSwitch is running an RT PoE firmware version (1.0.1.6 or 1.0.1.7):

S124FXX # get hardware status
Model name: FortiSwitch-124F-POE
CPU: MIPS 34Kc V5.5
RAM: 493 MB
MTD Flash: 64 MB /dev/mtd
Hard disk: not available
Poe Firmware Version: 1.0.1.7 <-----
PSE Controller: Unknown Realtek Device 0x138

Step 2: Upgrade PoE Firmware.
Upgrade the RT PoE firmware to version 1.0.1.9 using the image provided by TAC.

Step 3: Confirm Firmware Upgrade.
After the upgrade, verify the PoE firmware version is 1.0.1.9:

get hardware status

Step 4: Upgrade FortiSwitch OS.
Once the PoE firmware is successfully upgraded, update the FortiSwitch OS to version 7.6.2 GA.

Step 5: Configure the Port for the GXP2160 VoIP Phone.
After the OS upgrade, apply the following configuration to enable support for the GXP2160 phone:

config switch physical-port
    edit portX
        set poe-disconnection-type DC-delay
    next
end

Replace portX with the appropriate port number connected to the phone.

Note: If the FortiSwitch is managed, then this config might not be available from FortiGate. So, create a Custom-command (Executing custom FortiSwitch scripts) to push this config from FortiGate.

Step 6: Verify Power Delivery.
Confirm that the phone is now receiving power and boots up properly.