CISCO-DOT11-CONTEXT-SERVICES-CLIENT-MIB

This MIB is intended to be implemented on all 802.11
        Access Points and Wireless Bridges that need to
        participate in the context management process and
        make use of the services provided by the entities
        offering WDS and WNS.  The term '802.11 station'
        refers to one of the Access Point / Wireless Bridge
        throughout the MIB unless stated otherwise.
        
        The hierarchy of the devices offering the wireless
        domain and network services looks like the following.
                                             
                    += = = = +
                    |        |
                    |  WNS   |  (Campus level)
                    |        |
                    += = = = +
                    /        \
                   /          \
                  /            \
                 /              \
                \/              \/
             += = =+          += = =+
             |     |          |     | 
             | WNS |          | WNS |  
             |     |          |     |
             += = =+          += = =+
             /     \                \
            /       \                \
           /         \                \
          /           \                \
         \/           \/               \/
        +=====+       +=====+          +=====+
        |     |       |     |          |     |
        | WDS |       | WDS |          | WDS | ( Subnet
        |     |       |     |          |     |   level-
        +=====+       +=====+          +=====+   Single
        /  \             \                 \   broadcast 
        /    \             \                 \   domain )
        /      \             \                 \
        /        \             \                 \
        /          \             \                 \
        \/          \/            \/                \/
        +~-~-~+      +~-~-~+       +~-~-~+           +~-~-~+
        +     +      +     +       +     +           +     +
        + AP  +      + AP  +       + AP  +           + AP  +
        +     +      +     +       +     +           +     +
        +~-~-~+      +~-~-~+       +~-~-~+           +~-~-~+
        ..            .             .                 .
        .  .            .             .                 .
        .    .            .             .                 .
        .      .            .             .                 .
        .        .            .             .                 .
        \/        \/           \/            \/                \/
        +.....+  +.....+      +-.-.-.+       +~-~-~+          +......+
        +     +  +     +      +      +       +     +          +      + 
        + MN  +  + MN  +      + WGB  +       + AP  +          +  MN  +
        +     +  +     +      +      +       +     +          +      +
        +.....+  +.....+      +-.-.-.+       +~-~-~+          +......+
                  .             .  .
                 .             .    .
                .             .      .
               .             .        .
              \/            \/        \/
           ++++++++      +......+   +......+
           +      +      +      +   +      +
           + EN   +      +  MN  +   +  MN  +
           +      +      +      +   +      +
           ++++++++      +......+   +......+
        
        
        The diagram above depicts the overall campus network
        hierarchy and the services being offered at various
        levels in the hierarchy.  Here, authentication
        services for infrastructure nodes are offered by the
        root node, the node providing WNS at the topmost
        (Campus) level.  This node spans an enterprise campus
        that resides in a geographic location.  In this case,
        an 802.11 station performs initial authentication
        with the topmost WNS entity. It also gets the keys
        needed for secure context transfer by communication
        with that entity.
        
        WNS are offered at various levels as shown in the
        hierarchy to achieve scalability.  WNS at the
        subsequent levels other than the root level include
        authentication services for MNs and are typically
        confined to a single building.
        
        At the broadcast domain level, the WDS includes
        authentication and registration services for the APs.
        An AP provides proxy authentication and  registration
        services for the MNs.  The APs that connect to parent
        APs through the wireless interface ( as shown by the
        dotted lines ) are Repeater-APs.  The WGBs are managed
        in the same manner as the MNs.  However, the Ethernet
        Nodes ( EN ) that are connected to the WGB won't be
        served as part of the WDS.
        
                         GLOSSARY
        
        Access Point ( AP )
        
        Any 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.
        
        Wireless Bridge 
        
        An 802.11 entity that provides wireless connectivity
        between two wired LAN segments and is used in point-
        to-point or point-to-multipoint configurations.
        
        Mobile Node ( MN )
        
        A roaming 802.11 wireless device in a wireless
        network associated with an access point.
        
        
        WorkGroup Bridge ( WGB )
        
        A work-group bridge is a non-STP AP with an 802.11
        primary port and a secondary Ethernet port that
        provides access to a non-STP secondary Ethernet LAN
        segment.  STP refers to the IEEE 802.1D Spanning Tree
        Protocol.  An 'STP AP' executes the 802.1D STP and
        the 802.1D STP is operated on an 'STP link'.  A
        'non-STP AP' does not execute the 802.1D STP.
        
        Repeater-AP
        
        A repeater is a 'wireless AP' that is attached to a
        parent AP on an 802.11 primary port.  The Ethernet
        port is disabled in a Repeater-AP.
        
        Infrastructure Node ( IN )
        
        This term refers to Access Points, Wireless Bridges
        and those devices that implement and offer WNS and
        WDS as shown in the network hierarchy.
        
        Ethernet Node ( EN )
        
        The node that gets the uplink to the Wireless AP
        via the WGB.  This node connects to the WGB through
        its primary Ethernet port.
        
        Context
        
        The mobility context for an MN includes its current
        mobility bindings with the APs, IP/802 address
        bindings, cached configuration parameters, QoS state,
        IP group membership, authentication state, accounting
        statistics, and other dynamically derived protocol
        state information.
        
        Wireless Domain Services
        
        The set of services being offered at a particular
        broadcast domain that may be an IP subnet or a
        particular VLAN.  The services include the following.
        
        1. MN security credential caching to provide seamless,
        secure intra-subnet roaming.
        
        2. Authenticated context transfer for roaming client
        within the subnet.
        
        Since, by definition, the WDS are bound to one subnet
        ( broadcast domain ), if implemented in a device
        spanning multiple subnets, the implementation should
        take care to provide separate set of services for
        each of the subnets.
                      
        
        Wireless Network Services
        
        The set of services that can be visualized as being
        offered at various levels other than the lowest
        (subnet) level of a hierarchical campus network.
        
        At the topmost level, infrastructure authentication
        services for all the devices in the network that
        provide WNS and WDS are offered.  In case if WNS are
        not distributed at several levels as shown in the
        hierarchy above and is confined to be offered only at
        a single topmost level, the services offered also
        include authentication services for the MNs.
        
        WNS Entity
        
        The logical entity that resides in an infrastructure
        node and offers WNS to the descendants of that
        infrastructure node in the wireless services
        hierarchy.
        
        WDS Entity
        
        The logical entity that resides in an infrastructure
        node and offers WDS to the descendants of that
        infrastructure node in the wireless services
        hierarchy.
        
        WS Entity
        
        Refers to one of WNS / WDS Entities.
        
        Parent Node
        
        The entity that immediately precedes an infrastructure
        node in the hierarchy.  For mobile nodes, the parent
        APs provide proxy wireless services by talking to their
        immediate parent entities providing WDS.
        
        Root Node
        
        The entity that is at the highest level in the network 
        hierarchy.  The root node acts as the IN Authenticator
        for the infrastructure nodes.  In case if WNS are not
        distributed, the root node also acts as the Mobile Node
        Authenticator ( See description below ).
        
        Descendant
        
        A node that is in the sub-tree of the campus hierarchy
        tree rooted at the node providing WNS at the campus
        level.
        
        Infrastructure Node ( IN ) Authenticator
        
        The logical entity that communicates with the AAA
        server and provides authentication services for the
        infrastructure nodes.  Details of the IN Authenticator
        has to be configured in the device providing WDS
        manually.  The AP learns about the IN Authenticator
        automatically upon registering with its immediate
        parent.  The WDS also includes MN authentication
        services if the entity providing WDS is at the
        topmost level in the hierarchy.
        
        Mobile Node ( MN ) Authenticator
        
        The logical entity that communicates with the AAA
        server and provides authentication services for mobile
        nodes.  An infrastructure node learns the whereabouts
        of the MN Authenticator from the root node.
        
        Wireless Network Manager ( WNM )
        
        The network management system that manages the
        entire hierarchy of devices providing WNS and WDS.
        
        Advertisement
        
        The process by which the Access Points identify their
        parent entities providing WDS.  APs listen to the
        advertisements of the WDS entities and gets registered
        with one of those entities to facilitate secured
        context transfer.
        
        WLCCP
        
        Wireless LAN Context Control Protocol.  Used to
        establish and manage the network topology and
        securely manage the 'operational context' for mobile
        stations in a campus network.                  
        
        AAA
        
        Authentication, Authorization, Accounting
        
        The method by which users are authenticated,
        authorized and tracked to gain access and move about
        inside a network.  A node will request network access
        through an appropriate protocol to an authentication
        server that provides protocols and services for
        providing authentication, authorization and session
        accounting.
        
        Service Set Identifier ( SSID )
        
        802.11 Service Set Identifier.  An SSID identifies a
        set of mobile nodes grouped into a logical 'service
        set' and the APs that provide access for the service
        set.
        
        
        Wireless services at subnet level
        =================================
        
                    +========+
                    |        |
                    |  WDS   | ( Subnet level - Broadcast
                    |        |   domain )
                    +========+
                     /      \
                    /        \
                   /          \
                  /            \
                 /              \
                \/              \/
              +~-~-~+         +~-~-~+
              +     +         +     +
              + AP  +         + AP  +
              +     +         +     +
              +~-~-~+         +~-~-~+
              .   .               .
             .     .               .
            .       .               .
           .         .               .
          .           .               .
         .             .               .
        \/             \/              \/
        +......+       +-.-.-.+        +~-~-~-+
        +      +       +      +        +      +
        +  MN  +       + WGB  +        +  AP  +
        +      +       +      +        +      +
        +......+       +-.-.-.+        +~-~-~-+
        
        
        The above diagram depicts how wireless services are
        being offered in a network rooted at the device
        implementing WDS.  In such a network, the WDS entity
        provides authentication services to both the
        infrastructure and mobile nodes.
        
        An 802.11 station in this hierarchy mentioned above
        performs the following.
        
        1) Provides proxy authentication and registration
        services to the MNs, WGBs and repeater-APs.  The
        station forwards all the authentication and
        registration requests of its clients to its parent
        node offering WDS and acting as the IN Authenticator
        to enable the authentication and registration of its
        clients.
        
        2) Participates in the election process to elect
        the node that will provide WDS for a particular
        broadcast domain.

Imported Objects

ciscoExperimentCISCO-SMI
InetAddressType, InetAddressINET-ADDRESS-MIB
MODULE-COMPLIANCE, OBJECT-GROUPSNMPv2-CONF
MODULE-IDENTITY, OBJECT-TYPE, Counter32SNMPv2-SMI
TimeIntervalSNMPv2-TC
ciscoDot11CscMIB .1.3.6.1.4.1.9.10.109
ciscoDot11CscMIBObjects .1.3.6.1.4.1.9.10.109.1
ciscoDot11CscConfigGlobal .1.3.6.1.4.1.9.10.109.1.1
cDot11CscAddressType .1.3.6.1.4.1.9.10.109.1.1.1
cDot11CscParentWdsAddress .1.3.6.1.4.1.9.10.109.1.1.2
cDot11CscRootNodeAddress .1.3.6.1.4.1.9.10.109.1.1.3
cDot11CscMnAuthenticatorAddress .1.3.6.1.4.1.9.10.109.1.1.4
cDot11CscOperMode .1.3.6.1.4.1.9.10.109.1.1.5
cDot11CscMnInactivityTime .1.3.6.1.4.1.9.10.109.1.1.6
cDot11CscRegistrationLifeTime .1.3.6.1.4.1.9.10.109.1.1.7
cDot11CscStateTransitions .1.3.6.1.4.1.9.10.109.1.1.8
ciscoDot11CscMIBConformance .1.3.6.1.4.1.9.10.109.2
ciscoDot11CscMIBCompliances .1.3.6.1.4.1.9.10.109.2.1
ciscoDot11CscMIBGroups .1.3.6.1.4.1.9.10.109.2.2