Cisco Systems AIR-CT2504-5-K9, 2500 manual Requires a Radius server. Please see

Table 3	Startup Wizard Information (continued)
Wizard Setting		Action
Management Interface DHCP Server IP Address		Enter the management interface DHCP server IP
		address.
Virtual Gateway IP Address		Enter the IP address of the controller virtual
		interface. You should enter a fictitious,
		unassigned IP address, such as 1.1.1.1.
		The virtual interface is used to support mobility
		management, DHCP relay, and embedded Layer
		3 security such as guest web authentication and
		VPN termination. All controllers within a
		mobility group must be configured with the same
		virtual interface IP address.
Mobility/RF Group Name		If desired, enter the name of the mobility
		group/RF group to which you want the controller
		to belong.
		Although the name that you enter here is assigned
		to both the mobility group and the RF group,
		these groups are not identical. Both groups define
		clusters of controllers, but they have different
		purposes. All of the controllers in an RF group
		are usually also in the same mobility group and
		vice versa. However, a mobility group facilitates
		scalable, system-wide mobility and controller
		redundancy while an RF group facilitates
		scalable, system-wide dynamic RF management.
Network Name (SSID)		Enter the network name, or service set identifier
		(SSID). This is the default SSID that the access
		points use when they join a controller.
Configure DHCP Bridging Mode		Enter yes to configure DHCP Bridging Mode.
		Values are yes or no. The following message
		appears:
		Warning! The default WLAN security policy
		requires a RADIUS server. Please see
		documentation for more details.

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