Sniffer® Portable Professional User's Guide - NetScout

Chapter 5
80 Sniffer Portable Professional
Table 5-3. Management Frame Counters in the Dashboard’s 802.11
Tab (2 of 2)
Counter Description
Probe Requests The number of Probe Requests observed on
the wireless network. Stations send Probe
Requests to other stations or access points
to retrieve information (for example, to
determine whether a given access point is
open for new associations).
Probe Responses The number of Probe Responses observed
on the wireless network. Stations and access
points send Probe Responses containing
requested parameters in response to Probe
Requests.
Beacons The number of Beacon packets observed on
the wireless network. Access points send
beacon packets at a regular interval to
synchronize timing between stations on the
same network.
ATIMs The number of Announcement Traffic
Indication Messages (ATIMs) observed on
the wireless network. Stations send ATIMs
immediately after a beacon packet
transmission to inform other stations that
they have data to transmit to them.
Disassociations The number of Disassociation packets
observed on the wireless network. Stations
and access points send Disassociations to
end associations.
Authentications The number of Authentication packets
observed on the wireless network. Stations
and access points send Authentications to
identify one another securely.
Deauthentications The number of Deauthentication packets
observed on the wireless network. Stations
and access points send Deauthentications to
end secure communications with one
another.