"Configuring the Access Point to Provide DHCP Service
These sections describe how to configure the access point to act as a DHCP server:
•Setting up the DHCP Server
•Monitoring and Maintaining the DHCP Server Access Point Setting up the DHCP Server
By default, access points are configured to receive IP settings from a DHCP server on your network. You can also configure an access point to act as a DHCP server to assign IP settings to devices on both your wired and wireless LANs."