FortiAP devices are thin wireless access points (AP) supporting the latest Wi-Fi technologies (multi-user MIMO 802.11ac Wave 1 and Wave 2, 4x4), as well as 802.11n, 802.11AX , and the demand for plug and play deployment.
This article describes how to connect redundant uplink on FortiAP-421E without LACP.

Related link.

For FortiAP-421E.

Few FortiAP models (eg. FortiAP42x) supports dual POE RJ45 ports, redundant uplink can be configured on this FortiAP without configuring LACP aggregation.
Redundancy is achieved by isolating both FortiAP Ethernet ports with two different management VLANs.

Example: On 'switch' A use VLAN 10 as the untagged management VLAN, on switch B use VLAN20 as the untagged management VLAN.
This will prevent from L2 loops.

Ensure no routing or policies between these VLANs/subnets, so the FortiAP cannot discover a management interface outside of its subnet and to prevent from routing loops if multicast policies or 'bonjour' are configured at a later stage.

Then, on the FortiAP set AC1 to the VLAN10 management IP and AC2 to the VLAN20 management IP.

On boot up the FortiAP will try to reach AC1 first, if this fails it will try AC2.

FortiAP connected via VLAN10 on switch A and if this uplink fails, it will reboot and come online using VLAN20 on switch B.


As soon as AC1 on VLAN10 becomes reachable again, the AP will fall-back to the primary link.