Discovering a FortiAP unit
For a FortiGate acting as an AP controller (AC) to discover a FortiAP unit, the FortiAP must be able to reach the AC. A FortiAP with the factory default configuration has various ways of acquiring an AC’s IP address to reach it.
| AC discovery type | Description |
| Auto | The FortiAP attempts to be discovered in the below ways sequentially within an endless loop. |
| Static | The FortiAP sends discover requests to a preconfigured IP address that an AC owns. |
| DHCP | The FortiAP acquires the IP address of an AC in DHCP option 138 (the factory default) of a DHCP offer, which the FortiAP acquires its own IP address from. |
| DNS | The FortiAP acquires the AC’s IP address by resolving a preconfigured FQDN. |
| FortiCloud | FortiCloud discovers the FortiAP. |
| Broadcast | FortiAP is discovered by sending broadcasts in its local subnet. |
| Multicast | FortiAP is discovered by sending discovery requests to a multicast address of 224.0.1.140, which is the factory default. |