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 Cisco Light-weight LWAPP Access Points. Information provided by this MIB is used to manage Local authentication information on the controller. The relationship between CC and the LWAPP APs can be depicted as follows: +......+ +......+ +......+ + + + + + + + CC + + CC + + CC + + + + + + + +......+ +......+ +......+ .. . . .. . . . . . . . . . . . . . . . . . . +......+ +......+ +......+ +......+ + + + + + + + + + AP + + AP + + AP + + AP + + + + + + + + + +......+ +......+ +......+ +......+ . . . . . . . . . . . . . . . . . . . +......+ +......+ +......+ +......+ + + + + + + + + + MN + + MN + + MN + + MN + + + + + + + + + +......+ +......+ +......+ +......+ The LWAPP tunnel exists between the controller and the APs. The MNs communicate with the APs through the protocol defined by the 802.11 standard. LWAPP APs, upon bootup, discover and join one of the controllers and the controller pushes the configuration, that includes the WLAN parameters, to the LWAPP APs. The APs then encapsulate all the 802.11 frames from wireless clients inside LWAPP frames and forward the LWAPP 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. LWAPP APs encapsulate all the 802.11 frames in LWAPP frames and sends them to the controller to which it is logically connected. Gratuitous Probe Response (GPR) The Gratuitous Probe Response feature aids in conserving battery power of WLAN-enabled cell phones by providing a high rate packet on the order of tens of milliseconds such that these kind of phones can wake up and wait at predefined intervals, to reduce battery power. The GPR packet is transmitted from the AP at a predefined time interval. Light Weight Access Point Protocol ( LWAPP ) 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 and client are used interchangeably. Extensible Authentication Protocol ( EAP ) EAP is a universal authentication protocol used in wireless and PPP networks. It is defined by RFC 3748. EAP-Flexible Authentication ( EAP-FAST ) This protocol is used via secure tunneling for 802.1X EAP. Transport Layer Security ( TLS ) This is a cryptographic protocol which provides secure communication over the network. Protected Extensible Authentication Protocol ( PEAP ) PEAP is a method to securely transmit authentication information, including passwords, over wired or wireless networks. Lightweight Directory Access Protocol ( LDAP ) LDAP is a protocol used for obtaining directory services and runs over TCP/IP. REFERENCE [1] Wireless LAN Medium Access Control ( MAC ) and Physical Layer ( PHY ) Specifications [2] Draft-obara-capwap-lwapp-00.txt, IETF Light Weight Access Point Protocol