About Management Access Interface
The Management Access Interface is the default interface for in-band management of the Primary AP and connectivity to enterprise services. It is also used for communication between the Primary AP and connected access points (APs). The management interface has the consistently pingable in-band interface IP address on the Primary AP. You can access the web interface of the Primary AP by entering the management interface IP address of the Primary AP or using https://ciscobusiness.cisco in your browser's address bar.
For APs, the Primary AP requires one management interface to control all communications and one AP manager interface to control all Primary AP-to-Access Point communications, regardless of the number of ports.