Description:
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bsnSwitching MODULE-IDENTITY
LAST-UPDATED "200604100000Z"
ORGANIZATION "Airespace, Inc."
CONTACT-INFO
"Cisco Systems,
Customer Service
Postal: 170 West Tasman Drive
San Jose, CA 95134
USA
Tel: +1 800 553-NETS
Email: cs-wnbu-snmp@cisco.com"
DESCRIPTION
"This MIB is intended to be implemented on all those devices operating as Central Controllers (CC) that terminate the Light Weight Access Point Protocol tunnel from Light-weight LWAPP Access Points. This MIB provides configuration, statistics and status information about the controller.
This includes controller statistics and provides information such as Inventory, Trap logs, memory and CPU. This MIB also provides configuration of CLI, SNMP, LAG, DHCP, Spanning Tree, etc.
The relationship between controller and the LWAPP APs can be depicted as follows:
+......+ +......+ +......+ +......+
+ CC + + CC + + CC + + CC +
+......+ +......+ +......+ +......+
+ AP + + AP + + AP + + AP + + AP +
+......+ +......+ +......+ +......+ +......+
+ MN + + 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 it to the controller to which it is logically connected.
Basic Service Set Identifier (BSSID): The identifier for the service set comprising of all the 802.11 stations under the control of one coordinating Access Point. This identifier happens to be the MAC address of the dot11 radio interface of the Access Point. The wireless clients that associate with the Access Point get the wired uplink through this particular dot11 interface.
Central Controller (CC): The central entity that terminates the LWAPP protocol tunnel from the LWAPP APs. Throughout this MIB, this entity also referred to as 'controller'.
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.
Station Management (SMT): This term refers to the internal management of the 802.11 protocol operations by the AP to work cooperatively with the other APs and 802.11 devices in the network.
REFERENCE
[1] Part 11 Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications.
[2] Draft-obara-capwap-lwapp-00.txt, IETF Light Weight Access Point Protocol."
REVISION "200604100000Z"
DESCRIPTION
"Updated MIB with description and format"
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