Various Questions about wireless access controller

Help me please with these fundamental questions about the role of the access (AC) wireless controller.

Assume that the access controller and Access Point are connected via IP:

-Wireless frames sent to AP to acre; include the original MAC header (on the way to wireless access)?  If Yes, is there a Cisco AC gets to fill the WLAN and LAN it is plugged (which means that it outputs as ethernet frames as if they were issued by Mobile Stations).

-Is the AC necessarily the default gateway for mobile stations? I guess not. But it is possible the default gateway?

The Cisco AC can function as a DHCP relay?

The AP creates a tunnel to the controller. All IP traffic from the AP to the controller will address the AP source and dest IP to the interface of the Manager of the AP on the controller. The wireless client traffic is encapsulated inside this tunnel. When it hits the controller the CAPWAP is removed leaving the customer's original package to be sent to the local network through the controller.

The controller should not be the default gateway for wireless clients because it is not a router. Think of it as a device that converted into wired wireless traffic.

Normally, the controller acts as a proxy DHCP. Once the customer has joined a WLAN, the controller sends the DHCP packets to the DHCP server on behalf of clients such as the IP address of assistance normally configured on the router for cable customers. You can also configure the controller to act as a DHCP server for wireless clients.

Tags: Cisco Wireless

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