This MIB module provides network management  
support for Cisco IEEE 802.11 Wireless LAN
type device (Access Point) radio interfaces.

          ACRONYMS 
AES 
    Advanced Encryption Standard

AP   
    Access point 

AID 
    Association IDentifier for wireless stations.  

BSS
    IEEE 802.11 Basic Service Set.

CCMP
    Code Mode/CBC Mac Protocol

CEPT
    European Conference of Postal and 
    Telecommunications Administrations.

CRC 
    Cyclic Redundancy Check.  

DSSS    
    Direct-Sequence Spread Spectrum.  

EAP
    Extensible Authentication Protocol.  

ERP
    Extended Rate PHY

FHSS    
    Frequency-Hopping Spread Spectrum.  

IAPP
    Inter-Access-Point Protocol.  

ICV
    Integrity Check Value.  

ISM 
    Industrial, Scientific, and Medical.

MBSSID 
    Multiple Broadcast SSID

MIC
    Message Integrity Check.  

MMH
    Multi-Modal Hashing.

OFDM 
    Orthogonal Frequency Division Multiplexing.  

PHY
    Physical Layer (Layer 1 in network model).

PLCP
    Physical Layer Convergence Procedure.  

PMD
    Physical Medium Dependent.  

PSPF
    Public Secure Packet Forwarding.

RF
    Radio Frequency.

SS    
    Spread-spectrum.

SSID
    Radio Service Set ID.  

STA 
    IEEE 802.11 wireless station.

U-NII  
    Unlicensed National information Infrastructure
   
VLAN 
    Virtual LAN.

WEP
    Wired Equivalent Privacy.

WGB
    Work-group Bridge

WPA 
    WiFi Protected Access

          GLOSSARY 

Access point    
    Transmitter/receiver (transceiver) device
    that commonly connects and transports data 
    between a wireless network and a wired network.

Association
    The service used to establish access point
    or station mapping and enable STA invocation
    of the distribution system services.
    (Wireless clients attempt to connect to 
    access points.)

Basic Rate
    A data rate that is mandatory for client
    devices to support in order for them to achieve
    successful association.

Basic Service Set
    The IEEE 802.11 BSS of an AP comprises of the 
    stations directly associating with the AP.

Bridge    
    Device that connects two or more segments 
    and reduces traffic by analyzing the 
    destination address, filtering the frame,
    and forwarding the frame to all connected 
    segments.

Bridge AP 
    It is an AP that functions as a transparent 
    bridge between 2 wired LAN segments.  

Broadcast SSID 
    Clients can send out Broadcast SSID Probe 
    Requests to a nearby AP, and the AP will 
    broadcast its own SSID within its beacons
    to response to the clients. Clients can use
    this Broadcast SSID to associate and 
    communicate with the AP.  

Cyclic Redundancy Check 
    CRC is an error detect mechanism that applies 
    to frame transmission.

Direct-Sequence Spread Spectrum
    DSSS combines a data signal at the sending 
    station with a higher data rate bit sequence, 
    which many refer to as a chipping code (also 
    known as processing gain).  A high processing gain
    increases the signals resistance to interference.  
    DSSS sends a specific string of bits for each data
    bit sent.

ERP-CCK Modulation
    This signal modulation technique is supported in
    PHY implementing IEEE 802.11b/g Protocol.

ERP-OFDM Modulation
    This signal modulation technique is supported in
    PHY implementing IEEE 802.11g Protocol.         

Extensible Authentication Protocol
    EAP acts as the interface between a wireless 
    client and an authentication server, such as a 
    RADIUS server, to which the access point 
    communicates over the wired network.

Extended Rate PHY
    This PHY implements the IEEE 802.11g Protocol.

Frequency-Hopping Spread Spectrum
    In FHSS, a hopping code determines the frequencies 
    the radio will transmit and in which order.  To 
    properly receive the signal, the receiver must be 
    set to same hopping code and listen to the 
    incoming signal at the right time and correct 
    frequency.  The code pattern maintains a single 
    logical channel.

IEEE 802.11    
    Standard to encourage interoperability among 
    wireless networking equipment.

IEEE 802.11b    
    High-rate wireless LAN standard for wireless 
    data transfer at up to 11 Mbps.

IEEE P802.11g 
    Higher Speed Physical Layer (PHY) Extension to 
    IEEE 802.11b, will boost wireless LAN speed to 54 
    Mbps by using OFDM (orthogonal frequency division 
    multiplexing).  The IEEE 802.11g specification is 
    backward compatible with the widely deployed IEEE 
    802.11b standard.

Inter-Access-Point Protocol 
    The IEEE 802.11 standard does not define how 
    access points track moving users or how to 
    negotiate a handoff from one access point to the
    next, a process referred to as roaming.  IAPP is
    a Cisco proprietary protocol to support roaming.  
    However, IAPP does not address how the wireless 
    system tracks users moving from one subnet to 
    another.

Independent network    
    Network that provides peer-to-peer connectivity 
    without relying on a complete network 
    infrastructure.

Integrity Check Value
    The WEP ICV shall be a 32-bit value containing
    the 32-bit cyclic redundancy code designed for 
    verifying wireless data frame integrity.   

Message Integrity Check 
    A MIC can, optionally, be added to WEP-encrypted 
    802.11 frames.  MIC prevents attacks on encrypted 
    packets.  MIC, implemented on both the access point 
    and all associated client devices, adds a few bytes
    to each packet to make the packets tamper-proof.  

Native VLAN ID
    A switch port and/or AP can be configured with a 
    'native VLAN ID'.  Untagged or priority-tagged 
    frames are implicitly associated with the native 
    VLAN ID.  The default native VLAN ID is '1' if 
    VLAN tagging is enabled.  The native VLAN ID is '0' 
    or 'no VLAN ID' if VLAN tagging is not enabled.

Node    
    Device on a network; has its own unique network 
    address and name.

Non-Root Bridge 
    This wireless bridge does not connect to the main 
    wired LAN segment.  It connects to a remote wired 
    LAN segment and can associate with root bridges and 
    other non-root bridges that accept client 
    associations.  It also can accept associations from
    other non-root bridges, repeater access points, 
    and client devices.

Physical Layer Convergence Procedure
    In IEEE 802.11 wireless LANs, PLCP defines a method 
    of mapping the IEEE 802.11 MAC sublayer protocol
    data units into a framing format suitable for
    sending and receiving user data and management
    information between two or more wireless stations
    using the associated PMD system.  

Physical Medium Dependent
    In IEEE 802.11 wireless LANs, a PMD system, whose
    function defines the characteristics of, and method 
    of transmitting and receiving data through, a 
    wireless medium between two or more wireless 
    stations each using the DSSS.

Preamble
    The radio preamble are data at the head of a 
    packet that contains information access points 
    and client devices required by IEEE 802.11 when 
    sending and receiving packets.

Primary LAN
    In an AP, if the destinations of inbound unicast 
    frames are unknown, the frames are sent toward 
    the primary LAN defined on the device.

Radio carrier    
    Radio waves that deliver energy to a remote 
    receiver; in other words, radio waves in a 
    wireless LAN environment.

Repeater    
    Device that connects multiple segments, 
    listening to each and regenerating the signal
    on one to every other connected one; so that 
    the signal can travel further.

Repeater or Non-root Access Point    
    The repeater access point is not connected 
    to the wired LAN.  The Repeater is a wireless 
    LAN transceiver that transfers data between 
    a client and another access point, another 
    repeater, or between two bridges.  The repeater 
    is placed within radio range of an access point 
    connected to the wired LAN, another repeater, or 
    an non-root bridge to extend the range of the 
    infrastructure.

Radio Frequency 
    Radio wave and modulation process or operation.

Root Access Point    
    This access point connects clients to the main 
    wired LAN.

Root (Wireless) Bridge    
    This wireless bridge connects to the main wired 
    LAN.  It can communicate with non-root wireless 
    bridges, repeater access points, and client 
    devices but not with another wireless root 
    bridge.  Only one wireless bridge in a wireless 
    LAN can be set as the wireless root bridge.  

Spread-spectrum 
    Wideband radio frequency technique that 
    consumes more bandwidth than the narrow-band 
    alternative but produces a signal that is louder 
    and easier to detect.  There are two types of 
    spread-spectrum radio: frequency hopping and 
    direct sequence.

Radio Service Set ID
    SSID is a unique identifier that APs and clients 
    use to identify with each other.  SSID is a simple 
    means of access control and is not for security.  
    The SSID can be any alphanumeric entry up to 32 
    characters.

Tag header
    A 'tag header' is as defined in the IEEE 802.1Q
    standard.  An 802.1Q tag header contains a 3-bit 
    priority field and a 12-bit VLAN ID field.   
    A 'priority tag' has a VLAN ID of 0, to indicate 
    'no VLAN ID'.  A 'VLAN tag' has a non-zero 
    VLAN ID.

Virtual LAN
    VLAN defined in the IEEE 802.1Q VLAN standard 
    supports logically segmenting of LAN 
    infrastructure into different subnets or 
    workgroups so that packets are switched only 
    between ports within the same VLAN.  

VLAN ID
    Each VLAN is identified by a 12-bit 'VLAN ID'.   
    A VLAN ID of '0' is used to indicate 
    'no VLAN ID'.  Valid VLAN IDs range from '1' to 
    '4095'.  VLAN of ID '4095' is the default VLAN 
    for Cisco VoIP Phones.

Wired Equivalent Privacy
    WEP is generally used to refer to 802.11 
    encryption.

Work-group Bridge
    It is a client to APs or wireless root bridges.
    The radio port of a WGB serves as the uplink to
    the main network and the Ethernet port provides
    network access for devices like PC or IP phone.

Upgrade of Frequencies
    As per the latest regulations proposed by the 
    Japanese Government, the four channels 34
    ( 5170 GHz ), 38 ( 5190 GHz), 42 ( 5210 ) and 
    44 ( 5230 ) in the 5150-5250 MHz band has been
    shifted by 10 MHz. Thus, the new channels in the
    5150-5250 MHz band  are 36 ( 5180 ), 40 ( 5200 )
    and 44 ( 5220 ) and 48 ( 5240 ).