Installation guide

Chapter 10
108 Sniffer Technologies
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 10-4 lists and
describes the Management frame counters in the Dashboard’s 802.11 tab.
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 vary depending on the
monitored network:
• For 802.11b/g networks, there are separate
counters for the number of frames sent at 1,
2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54, 72,
108 Mbps.
• For 802.11a networks, there are separate
counters for the number of frames sent at 6,
9, 12, 18, 24, 36, 48, 54, 72, and 108 Mbps.
• For legacy 802.11b cards, the speeds
remain at 1, 2, 5.5, 11 Mbps.
NOTE: 802.11g is backward-compatible with
802.11b, therefore the speed counters seen in
802.11b are also shown in 802.11g.
802.11b and 802.11g share the same frequency
band (2.4 GHz) and same number of channels
(1-14). 802.11b goes from speeds 1 Mbps to 11
Mbps and 802.11g goes from speeds 1 Mbps to
54 Mbps. 802.11a and 802.11g share similar
speeds (6, 9, 12, 18, 24, 36, 48, 54, 72, and 108
Mbps – 72 and 108 Mbps are proprietary
implementations).
Table 10-3. Statistics Counters in the Dashboard’s 802.11 Tab (2 of 2)
Counter Description
Table 10-4. Management Frame Counters in the Dashboard’s 802.11 Tab (1 of 3)
Counter Description
Association Requests The number of Association Requests observed
on the wireless network. Stations send
Association Requests to become associated
with access points.