Sniffer® Portable Professional User's Guide - NetScout

Monitoring Your Network
Table 5-2. Statistics Counters in the Dashboard’s 802.11 Tab
(3 of 3)
Counter Description
PLCP Long Pkts The number of PLCP PDUs seen with the
“long” preamble and header. This form of
PLCP PDU is compatible with legacy
equipment from older wireless LANs and
supports and operates at either 1 Mbps or 2
Mbps.
Data Rate Counters These counters provide packet counts for
different speed ranges.
Management Frame Type Counters in the 802.11 Tab
Management frames are used to set up the initial communications
between stations and access points on the wireless network. Table 5-3
lists and describes the Management frame counters in the Dashboard’s
802.11 tab (example shown in Figure 5-4 on page 77).
Table 5-3. Management Frame Counters in the Dashboard’s 802.11
Tab (1 of 2)
Counter Description
Association Requests The number of Association Requests
observed on the wireless network. Stations
send Association Requests to become
associated with access points.
Association Responses The number of Association Responses
observed on the wireless network. Access
points send Association Responses in
response to Association Requests from
wireless stations.
Reassociation Requests The number of Reassociation Requests
observed on the wireless network. Stations
send Reassociation Requests when they
need to associate with a new access point
(for example, because they are out of range
of their old access point). This way, the new
access point knows to set up forwarding of
traffic from the old access point.
Reassociation Responses The number of Reassociation Responses
observed on the wireless network. Access
points send Reassociation Responses in
response to Reassociation Requests from
wireless stations.
User’s Guide 79