|This MIB module provides network management
support for Cisco IEEE 802.11 Wireless LAN
type device (Access Point) radio interfaces.
Advanced Encryption Standard
Association IDentifier for wireless stations.
IEEE 802.11 Basic Service Set.
Code Mode/CBC Mac Protocol
European Conference of Postal and
Cyclic Redundancy Check.
Direct-Sequence Spread Spectrum.
Extensible Authentication Protocol.
Extended Rate PHY
Frequency-Hopping Spread Spectrum.
Integrity Check Value.
Industrial, Scientific, and Medical.
Multiple Broadcast SSID
Message Integrity Check.
Orthogonal Frequency Division Multiplexing.
Physical Layer (Layer 1 in network model).
Physical Layer Convergence Procedure.
Physical Medium Dependent.
Public Secure Packet Forwarding.
Radio Service Set ID.
IEEE 802.11 wireless station.
Unlicensed National information Infrastructure
Wired Equivalent Privacy.
WiFi Protected Access
Transmitter/receiver (transceiver) device
that commonly connects and transports data
between a wireless network and a wired network.
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
A data rate that is mandatory for client
devices to support in order for them to achieve
Basic Service Set
The IEEE 802.11 BSS of an AP comprises of the
stations directly associating with the AP.
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
It is an AP that functions as a transparent
bridge between 2 wired LAN segments.
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
This signal modulation technique is supported in
PHY implementing IEEE 802.11b/g Protocol.
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
Standard to encourage interoperability among
wireless networking equipment.
High-rate wireless LAN standard for wireless
data transfer at up to 11 Mbps.
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
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
Network that provides peer-to-peer connectivity
without relying on a complete network
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.
Device on a network; has its own unique network
address and name.
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.
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.
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 waves that deliver energy to a remote
receiver; in other words, radio waves in a
wireless LAN environment.
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
Radio wave and modulation process or operation.
Root Access Point
This access point connects clients to the main
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.
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
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
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 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.
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
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 ).