Technical Tip: PoE port fails showing up 'Power Fault: Error Type 6'

[ehamud]

Description	This article describes how to avoid Error Type 6 when PoE ports are not coming up.
Scope	FortiSwitch.
Solution	Sometimes FortiSwitch shows a special Error Type 6 and 'Startup Failure' error. It means that more than 400mA are under some specific Access points. When this happens, the FortiAP loses connection with its Controller. Let´s diagnose one port, port4 shows this abnormal status: FortiSwitch1 # diag switch poe status port4 Port(4) Power:0.00W, Power-Status code: 5(Fault) Power-Up Mode: Normal Mode Power Fault: Error Type 6 (Startup Failure) Remote Power Device Type: IEEE802.3AT PD Power Class: 4 Defined Max Power: 30.0W, Priority: High. Voltage: 0.00V Current: 0mA Temperature: 31.25 Centigrade In order to fix it,  use the following commands in this order. Go to the port or ports with the issue and execute: config switch physical-port     edit portX         set poe-port-mode IEEE802_3AF     end end If it does not help, try this command: config switch physical-port     edit portX         set poe-port-mode IEEE802_3AT     end end Also, it is important to note that when it is necessary to connect two PoE ports, it is mandatory to disable the PoE function on both ports before the rj45 connection occurs using this command. If not, it will probably get the same error type 6: config switch physical-port     edit portX         set poe-status disable     end end For more information, check this related document: Configuring power over Ethernet on a port  One example of healthy behavior is the following diagnosis: diagnose switch poe status port6 Port(6) Power:4.20W, Power-Status: Delivering Power Power-Up Mode: Normal Mode Remote Power Device Type: IEEE802.3AT PD Power Class: 4 Defined Max Power: 30.0W, Priority:3 Voltage: 54.00V Current: 71mA