This MIB is intended to be implemented on all those devices operating as Central controllers, that terminate the Light Weight Access Point Protocol tunnel from Qtech Light-weight CAPWAP Access Points. This MIB is used to show and configure Dynamic Host Configuration Protocol (DHCP) related statistics. The relationship between CC and the CAPWAP APs can be depicted as follows: +......+ +......+ +......+ +......+ + + + + + + + + + CC + + CC + + CC + + CC + + + + + + + + + +......+ +......+ +......+ +......+ .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . +......+ +......+ +......+ +......+ +......+ + + + + + + + + + + + AP + + AP + + AP + + AP + + AP + + + + + + + + + + + +......+ +......+ +......+ +......+ +......+ . . . . . . . . . . . . . . . . . . . . . . . . +......+ +......+ +......+ +......+ +......+ + + + + + + + + + + + MN + + MN + + MN + + MN + + MN + + + + + + + + + + + +......+ +......+ +......+ +......+ +......+ The CAPWAP tunnel exists between the controller and the APs. The MNs communicate with the APs through the protocol defined by the 802.11 standard. CAPWAP APs, upon bootup, discover and join one of the controllers and the controller pushes the configuration, that includes the WLAN parameters, to the CAPWAP APs. The APs then encapsulate all the 802.11 frames from wireless clients inside CAPWAP frames and forward the CAPWAP frames to the controller. GLOSSARY Access Point ( AP ) An entity that contains an 802.11 medium access control ( MAC ) and physical layer ( PHY ) interface and provides access to the distribution services via the wireless medium for associated clients. CAPWAP APs encapsulate all the 802.11 frames in CAPWAP frames and sends them to the controller to which it is logically connected. Central Controller ( CC ) The central entity that terminates the CAPWAP protocol tunnel from the CAPWAP APs. Throughout this MIB, this entity also referred to as 'controller'. Light Weight Access Point Protocol ( CAPWAP ) This is a generic protocol that defines the communication between the Access Points and the Central Controller. Mobile Node ( MN ) A roaming 802.11 wireless device in a wireless network associated with an access point. Mobile Node, Mobile Station(Ms) and client are used interchangeably. REFERENCE [1] Wireless LAN Medium Access Control ( MAC ) and Physical Layer ( PHY ) Specifications. [2] Draft-obara-capwap-capwap-00.txt, IETF Light Weight Access Point Protocol