Step 7. Configure for AP Controller Discovery

Determine the method of AP controller discovery used by the APs to find the controller(s) to which the AP registers to provide network service. The AP supports:

• SLP-DA Discovery: Configure the segment settings for the DHCP (Dynamic Host Configuration Protocol) server that provides IP assignment to the APs to include a reference to the SLP-DA to which WLAN controllers are registered. This allows the AP to obtain a list of eligible controllers.
• DNS: Configure the controller.<network domain> entry to resolve to the IP address of a specific controller.
• Multicast: Verify that the switching gear and interconnecting VLANs are provisioned so as to allow multicast traffic, and IGMP (Internet Group Management Protocol) snooping allows for the establishment of multicast trees, allowing the APs to subscribe to SLP-DA server advertisements. The SLP-DA server sends queries to determine the list of registered controllers.