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678 lines
26 KiB
Plaintext
678 lines
26 KiB
Plaintext
-- *******************************************************************
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-- CISCO-LWAPP-CLIENT-ROAMING-MIB.my: Wireless client roaming MIB
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-- December 2005, Devesh Pujari , Prasanna Viswakumar
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--
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-- Copyright (c) 2005, 2006 by Cisco Systems, Inc.
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-- *******************************************************************
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--
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CISCO-LWAPP-CLIENT-ROAMING-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY,
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OBJECT-TYPE,
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Counter32,
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Integer32,
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TimeTicks
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FROM SNMPv2-SMI
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MODULE-COMPLIANCE,
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OBJECT-GROUP
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FROM SNMPv2-CONF
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MacAddress,
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TimeInterval
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FROM SNMPv2-TC
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cLApSysMacAddress,
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cLApDot11IfSlotId
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FROM CISCO-LWAPP-AP-MIB
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CLDot11Channel,
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CLDot11RfParamMode
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FROM CISCO-LWAPP-TC-MIB
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ciscoMgmt
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FROM CISCO-SMI;
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ciscoLwappClRoamMIB MODULE-IDENTITY
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LAST-UPDATED "200604110000Z"
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ORGANIZATION "Cisco Systems, Inc."
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CONTACT-INFO
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" Cisco Systems,
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Customer Service
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Postal: 170 West Tasman Drive
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San Jose, CA 95134
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USA
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Tel: +1 800 553-NETS
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Email: cs-wnbu-snmp@cisco.com"
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DESCRIPTION
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"This MIB is intended to be implemented on all those
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devices operating as Central controllers, that
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terminate the Light Weight Access Point Protocol
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tunnel from Cisco Light-weight LWAPP Access Points.
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Information provided by this MIB is for CCX related
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features as specified in the CCX specifications.
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This MIB covers roaming RF parameters for CCX
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clients.
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The relationship between CC and the LWAPP APs
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can be depicted as follows:
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+......+ +......+ +......+
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+ + + + + +
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+ CC + + CC + + CC +
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+ + + + + +
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+......+ +......+ +......+
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.. . .
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.. . .
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. . . .
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. . . .
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. . . .
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. . . .
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+......+ +......+ +......+ +......+
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+ + + + + + + +
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+ AP + + AP + + AP + + AP +
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+ + + + + + + +
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+......+ +......+ +......+ +......+
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. . .
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. . . .
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. . . .
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. . . .
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. . . .
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+......+ +......+ +......+ +......+
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+ + + + + + + +
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+ MN + + MN + + MN + + MN +
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+ + + + + + + +
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+......+ +......+ +......+ +......+
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The LWAPP tunnel exists between the controller and
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the APs. The MNs communicate with the APs through
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the protocol defined by the 802.11 standard.
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LWAPP APs, upon bootup, discover and join one of the
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controllers and the controller pushes the configuration,
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that includes the WLAN parameters, to the LWAPP APs.
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The APs then encapsulate all the 802.11 frames from
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wireless clients inside LWAPP frames and forward
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the LWAPP frames to the controller.
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GLOSSARY
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Access Point ( AP )
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An entity that contains an 802.11 medium access
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control ( MAC ) and physical layer ( PHY ) interface
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and provides access to the distribution services via
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the wireless medium for associated clients.
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LWAPP APs encapsulate all the 802.11 frames in
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LWAPP frames and sends them to the controller to which
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it is logically connected.
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Basic Service Set ( BSS )
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The IEEE 802.11 BSS of an AP comprises of the
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stations directly associating with the AP.
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Central Controller ( CC )
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The central entity that terminates the LWAPP protocol
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tunnel from the LWAPP APs. Throughout this MIB,
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this entity is also referred to as 'controller'.
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Cisco Compatible eXtensions (CCX)
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Wireless LAN Access Points (APs) manufactured by Cisco
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Systems have features and capabilities beyond those in
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related standards (e.g., IEEE 802.11 suite of
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standards ,Wi-Fi recommendations by WECA, 802.1X
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security suite,etc). A number of features provide
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higher performance.For example, Cisco AP transmits a
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specific Information Element, which the clients adapt
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to for enhanced performance. Similarly, a number of
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features are implemented by means of proprietary
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Information Elements, which Cisco clients use in
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specific ways to carry out tasks above and beyond the
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standard. Other examples of feature categories are
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roaming and power saving.
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Client Roaming
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A client may decide to reassociate with another AP for
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reasons of its own choosing. The decision of whether
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or not to use the information contained in the AP list
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is up to the discretion of the implementor, as long as
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the roam time requirement is met.
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Light Weight Access Point Protocol ( LWAPP )
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This is a generic protocol that defines the
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communication between the Access Points and the
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Central Controller.
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Mobile Node ( MN )
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A roaming 802.11 wireless device in a wireless
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network associated with an access point. Mobile Node
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and client are used interchangeably.
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REFERENCE
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[1] Wireless LAN Medium Access Control ( MAC ) and
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Physical Layer ( PHY ) Specifications
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[2] Draft-obara-capwap-lwapp-00.txt, IETF Light
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Weight Access Point Protocol "
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REVISION "200604110000Z"
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DESCRIPTION
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"Initial version of this MIB module. "
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::= { ciscoMgmt 523 }
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ciscoLwappClRoamMIBNotifs OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIB 0 }
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ciscoLwappClRoamMIBObjects OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIB 1 }
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ciscoLwappClRoamMIBConform OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIB 2 }
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clcrRoamDot11aRfParamConfig OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIBObjects 1 }
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clcrRoamDot11bRfParamConfig OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIBObjects 2 }
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clcrRoamReasonReport OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIBObjects 3 }
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clcrRoamDot11Stats OBJECT IDENTIFIER
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::= { ciscoLwappClRoamMIBObjects 4 }
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--********************************************************************
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-- Clients Roaming RF Parameters for 802.11a band.
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--********************************************************************
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clcrDot11aMode OBJECT-TYPE
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SYNTAX CLDot11RfParamMode
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object represents how the controller chooses
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the values of the RF parameters needed to manage
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roaming in 802.11a networks. "
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DEFVAL { default }
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::= { clcrRoamDot11aRfParamConfig 1 }
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clcrDot11aMinRssi OBJECT-TYPE
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SYNTAX Integer32 (-90..-80)
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UNITS "dBm"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates the Minimum Received Signal
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Strength Indication (RSSI) in dBm required to
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associate with the AP. It also defines the edge of
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coverage for the BSS. If the client's average
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received signal power dips below this threshold,
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clients must have roamed to another AP with a
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stronger signal. "
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DEFVAL { -85 }
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::= { clcrRoamDot11aRfParamConfig 2 }
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clcrDot11aHysteresis OBJECT-TYPE
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SYNTAX Integer32(2..4)
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UNITS "dB"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates how much stronger the signal
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strength (dB) of a neighbor AP must be, in order
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for the client to roam to it. The use of roaming
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hysteresis is intended to reduce the amount of
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clients roaming back and forth between BSSs if the
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client is physically located on or near the border
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between two BSSs. "
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DEFVAL { 2 }
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::= { clcrRoamDot11aRfParamConfig 3 }
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clcrDot11aAdaptiveScanThreshold OBJECT-TYPE
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SYNTAX Integer32(-77..-70)
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UNITS "dBm"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object configures the threshold for the
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strength of the signals received(RSSI) from an AP,
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as seen by an associated client, below which the
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client must be able to roam to a neighbor AP within
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the specified Transition Time configured through
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clcrDot11aTransitionTime. "
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DEFVAL { -72 }
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::= { clcrRoamDot11aRfParamConfig 4 }
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clcrDot11aTransitionTime OBJECT-TYPE
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SYNTAX TimeInterval(100..10000)
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object configures the maximum time duration
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permitted for the client to detect a suitable
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neighbor AP to roam to and to complete the roam,
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whenever the RSSI from the client?s associated AP
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is below the adaptive scan threshold configured
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through clcrDot11aAdaptiveScanThreshold. The time
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is expressed in 100th of a second. "
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DEFVAL { 500 }
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::= { clcrRoamDot11aRfParamConfig 5 }
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--********************************************************************
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-- Clients Roaming RF Parameters for 802.11b/g band.
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--********************************************************************
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clcrDot11bMode OBJECT-TYPE
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SYNTAX CLDot11RfParamMode
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object represents how the controller chooses
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the values of the RF parameters needed to manage
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roaming in 802.11b/g networks. "
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DEFVAL { default }
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::= { clcrRoamDot11bRfParamConfig 1 }
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clcrDot11bMinRssi OBJECT-TYPE
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SYNTAX Integer32 (-90..-80)
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UNITS "dBm"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates the minimum Received Signal
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Strength Indication (RSSI) in dBm required to
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associate with the AP. It also defines the edge of
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coverage for the BSS. If the client's average
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received signal power dips below this threshold,
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clients must have roamed to another AP with a
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stronger signal. "
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DEFVAL { -85 }
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::= { clcrRoamDot11bRfParamConfig 2 }
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clcrDot11bHysteresis OBJECT-TYPE
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SYNTAX Integer32(2..4)
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UNITS "dB"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object indicates how much stronger the signal
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strength (dB) of a neighbor AP must be, in order
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for the client to roam to it. The use of roaming
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hysteresis is intended to reduce the amount of
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clients roaming back and forth between BSSs if the
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client is physically located on or near the border
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between two BSSs. "
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DEFVAL { 2 }
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::= { clcrRoamDot11bRfParamConfig 3 }
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clcrDot11bAdaptiveScanThreshold OBJECT-TYPE
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SYNTAX Integer32(-77..-70)
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UNITS "dBm"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object configures the threshold for the
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strength of the signals received(RSSI) from an AP,
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as seen by an associated client, below which the
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client must be able to roam to a neighbor AP within
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the specified Transition Time configured through
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clcrDot11bTransitionTime. "
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DEFVAL { -72 }
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::= { clcrRoamDot11bRfParamConfig 4 }
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clcrDot11bTransitionTime OBJECT-TYPE
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SYNTAX TimeInterval(100..10000)
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object configures the maximum time duration
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permitted for the client to detect a suitable
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neighbor AP to roam to and to complete the roam,
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whenever the RSSI from the client is associated AP
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is below the adaptive scan threshold configured
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through clcrDot11aAdaptiveScanThreshold. The
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time is expressed in 100th of a second. "
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DEFVAL { 500 }
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::= { clcrRoamDot11bRfParamConfig 5 }
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--********************************************************************
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-- Client Roam Reason Report
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--********************************************************************
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clcrRoamReasonReportTable OBJECT-TYPE
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SYNTAX SEQUENCE OF ClcrRoamReasonReportEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table provides the reasons for CCX clients
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roaming from one AP to another.
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When a CCX client associates to an AP, it will always
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send an IAPP information packet to the new AP listing
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the characteristics of the previous AP.
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An entry is added to this table when a roam reason
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report is sent by a CCX client when it roams to a
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new AP. "
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::= { clcrRoamReasonReport 1 }
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clcrRoamReasonReportEntry OBJECT-TYPE
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SYNTAX ClcrRoamReasonReportEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"Each entry corresponds to the roam reason report
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sent by a CCX client to the new AP to which client
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associates. "
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INDEX { clcrRoamClientMacAddress,
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clcrRoamClientTimeStamp
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}
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::= { clcrRoamReasonReportTable 1 }
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ClcrRoamReasonReportEntry ::=
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SEQUENCE {
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clcrRoamClientMacAddress MacAddress,
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clcrRoamClientTimeStamp TimeTicks,
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clcrRoamNewApMacAddress MacAddress,
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clcrRoamPrevApMacAddress MacAddress,
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clcrRoamPrevApChannel CLDot11Channel,
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clcrRoamPrevApSsid OCTET STRING,
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clcrRoamDisassocTimeInterval TimeInterval,
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clcrRoamReason INTEGER
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}
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clcrRoamClientMacAddress OBJECT-TYPE
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SYNTAX MacAddress
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This object indicates the mac address of the
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client which has roamed to a new AP. "
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::= { clcrRoamReasonReportEntry 1 }
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clcrRoamClientTimeStamp OBJECT-TYPE
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SYNTAX TimeTicks
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This object indicates the time instance at which
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this report was received by the new AP, to which
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client roamed to. This represents number of
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seconds elapsed since 00:00:00 on January 1, 1970,
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Coordinated Universal Time (UTC). So a value of
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'1131362704' means 'Mon Nov 7 16:55:04 2005'. "
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::= { clcrRoamReasonReportEntry 2 }
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clcrRoamNewApMacAddress OBJECT-TYPE
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SYNTAX MacAddress
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the mac address of the
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current AP to which client has roamed to. This AP
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receives the roam reason report. "
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::= { clcrRoamReasonReportEntry 3 }
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clcrRoamPrevApMacAddress OBJECT-TYPE
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SYNTAX MacAddress
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the mac address of the
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previous AP to which client was associated. "
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::= { clcrRoamReasonReportEntry 4 }
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clcrRoamPrevApChannel OBJECT-TYPE
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SYNTAX CLDot11Channel
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the channel number at which
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the client was associated to the previous AP. "
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::= { clcrRoamReasonReportEntry 5 }
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clcrRoamPrevApSsid OBJECT-TYPE
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SYNTAX OCTET STRING(SIZE(1..32))
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the SSID at which the client
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was associated to the previous AP. "
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::= { clcrRoamReasonReportEntry 6 }
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clcrRoamDisassocTimeInterval OBJECT-TYPE
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SYNTAX TimeInterval
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the time elapsed since the
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client disassociated, in hundredth of a second. "
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::= { clcrRoamReasonReportEntry 7 }
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clcrRoamReason OBJECT-TYPE
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SYNTAX INTEGER {
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clcrUnspecified(0),
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clcrPoorLink(1),
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clcrLoadBalancing(2),
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clcrInsufficientCapacity(3),
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clcrDirectedRoam(4),
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clcrFirstAssociation(5),
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clcrRoamingIn(6),
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clcrRoamingOut(7),
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clcrBetterAp(8),
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clcrDisassociated(9)
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}
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates the reason for a client to
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roam to a new AP.
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The semantics are as follows.
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clcrUnspecified - The reason is not known or can't
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be found.
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clcrPoorLink - Normal roam due to poor link
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(excessive retries, too much interference, RSSI too
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low, etc.)
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clcrLoadBalancing - Normal roam due to load
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balancing
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clcrInsufficientCapacity - Roaming occured due to
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the insufficient capacity on the previous AP
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(TSPEC rejected)
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clcrDirectedRoam - Roaming is directed by the
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802.11 wireless Infrastructure
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clcrFirstAssociation - This is the first
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association to a particular WLAN
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clcrRoamingIn - Roaming in from cellular or other
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WAN
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clcrRoamingOut - Roaming out to cellular or other
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WAN
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clcrBetterAp - Normal roam due to better AP found
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clcrDisassociated - Deauthenticated or
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Disassociated from the previous AP. "
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::= { clcrRoamReasonReportEntry 8 }
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--********************************************************************
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-- Roaming Stats per 802.11 interface.
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--********************************************************************
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clcrDot11StatsTable OBJECT-TYPE
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SYNTAX SEQUENCE OF ClcrDot11StatsEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table populates the statistics collected when
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the client roamed in the WLAN.
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There exists a row in this table for each conceptual
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row in cLApDot11IfTable that represents a dot11
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interface of an AP. "
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::= { clcrRoamDot11Stats 1 }
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clcrDot11StatsEntry OBJECT-TYPE
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SYNTAX ClcrDot11StatsEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"Each entry represents a conceptual row in
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clcrDot11StatsTable and corresponds to the roam
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reason report sent by a CCX client to the new AP
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which the client associates to. "
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INDEX { cLApSysMacAddress,
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cLApDot11IfSlotId
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}
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::= { clcrDot11StatsTable 1 }
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|
|
|
ClcrDot11StatsEntry ::=
|
|
SEQUENCE {
|
|
clcrDot11NeighborRequestRx Counter32,
|
|
clcrDot11NeighborReplySent Counter32,
|
|
clcrDot11RoamReasonReportRx Counter32,
|
|
clcrDot11BcastUpdatesSent Counter32
|
|
}
|
|
|
|
clcrDot11NeighborRequestRx OBJECT-TYPE
|
|
SYNTAX Counter32
|
|
MAX-ACCESS read-only
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This object indicates the count of the number
|
|
of requests received from an E2E client for
|
|
neighbor updates. "
|
|
::= { clcrDot11StatsEntry 1 }
|
|
|
|
clcrDot11NeighborReplySent OBJECT-TYPE
|
|
SYNTAX Counter32
|
|
MAX-ACCESS read-only
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This object indicates the count of the number
|
|
of replies sent to the client in reply to the
|
|
request for neighbor updates received from the
|
|
client. "
|
|
::= { clcrDot11StatsEntry 2 }
|
|
|
|
clcrDot11RoamReasonReportRx OBJECT-TYPE
|
|
SYNTAX Counter32
|
|
MAX-ACCESS read-only
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This object reports the count of the number
|
|
of roam reason reports received from CCX
|
|
clients. "
|
|
::= { clcrDot11StatsEntry 3 }
|
|
|
|
clcrDot11BcastUpdatesSent OBJECT-TYPE
|
|
SYNTAX Counter32
|
|
MAX-ACCESS read-only
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This object indicates the count of the number of
|
|
broadcast neighbor updates sent by an AP. "
|
|
::= { clcrDot11StatsEntry 4 }
|
|
|
|
|
|
--********************************************************************
|
|
--* Compliance statements
|
|
--********************************************************************
|
|
|
|
ciscoLwappClRoamMIBCompliances OBJECT IDENTIFIER
|
|
::= { ciscoLwappClRoamMIBConform 1 }
|
|
|
|
ciscoLwappClRoamMIBGroups OBJECT IDENTIFIER
|
|
::= { ciscoLwappClRoamMIBConform 2 }
|
|
|
|
clcrMIBCompliance MODULE-COMPLIANCE
|
|
STATUS current
|
|
DESCRIPTION
|
|
"The compliance statement for the SNMP entities that
|
|
implement the ciscoLwappRoamMIB module."
|
|
MODULE MANDATORY-GROUPS {
|
|
ciscoLwappClRoamDot11aRfParamsGroup,
|
|
ciscoLwappClRoamDot11bRfParamsGroup,
|
|
ciscoLwappClRoamroamReasonGroup,
|
|
ciscoLwappClRoamroamingStatsGroup
|
|
}
|
|
::= { ciscoLwappClRoamMIBCompliances 1 }
|
|
|
|
--********************************************************************
|
|
--* Units of conformance
|
|
--********************************************************************
|
|
|
|
ciscoLwappClRoamDot11aRfParamsGroup OBJECT-GROUP
|
|
OBJECTS {
|
|
clcrDot11aMode,
|
|
clcrDot11aMinRssi,
|
|
clcrDot11aHysteresis,
|
|
clcrDot11aAdaptiveScanThreshold,
|
|
clcrDot11aTransitionTime
|
|
}
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This collection of objects represent the radio
|
|
parameters for the 802.11a networks. "
|
|
::= { ciscoLwappClRoamMIBGroups 1 }
|
|
|
|
ciscoLwappClRoamDot11bRfParamsGroup OBJECT-GROUP
|
|
OBJECTS {
|
|
clcrDot11bMode,
|
|
clcrDot11bMinRssi,
|
|
clcrDot11bHysteresis,
|
|
clcrDot11bAdaptiveScanThreshold,
|
|
clcrDot11bTransitionTime
|
|
}
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This collection of objects represent the radio
|
|
parameters for the 802.11b/g bands. "
|
|
::= { ciscoLwappClRoamMIBGroups 2 }
|
|
|
|
ciscoLwappClRoamroamReasonGroup OBJECT-GROUP
|
|
OBJECTS {
|
|
clcrRoamNewApMacAddress,
|
|
clcrRoamPrevApMacAddress,
|
|
clcrRoamPrevApChannel,
|
|
clcrRoamPrevApSsid,
|
|
clcrRoamDisassocTimeInterval,
|
|
clcrRoamReason
|
|
}
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This collection of objects provide the reasons for
|
|
clients roaming between APs. "
|
|
::= { ciscoLwappClRoamMIBGroups 3 }
|
|
|
|
ciscoLwappClRoamroamingStatsGroup OBJECT-GROUP
|
|
OBJECTS {
|
|
clcrDot11NeighborRequestRx,
|
|
clcrDot11NeighborReplySent,
|
|
clcrDot11RoamReasonReportRx,
|
|
clcrDot11BcastUpdatesSent
|
|
}
|
|
STATUS current
|
|
DESCRIPTION
|
|
"This collection of objects provide the counters
|
|
related to roaming. "
|
|
::= { ciscoLwappClRoamMIBGroups 4 }
|
|
|
|
END
|
|
|