Statistics
The Statistics screen shows the current statistics from the Cisco Wireless LAN
Adapter. These statistics are updated at the rate of once per second . You can
clear the current statistics by clicking on the Reset button. You can exit the
Statistics screen by clicking on OK, or by clicking on the X in the upper
right hand corner of the dialog box.
All Statistics are calculated based on the last time the statistics were reset
by the user, or since the last time the card was started.
Receive Statistics:
Multicast Packets Received - The number of multicast packets that were
successfully received.
Broadcast Packets Received - The number of broadcast packets that were
successfully received.
Unicast Packets Received - The number of unicast packets that were
successfully received.
Bytes Received - The number of bytes of data that were successfully received.
Beacons Received - The number of beacon packets that were successfully
received.
Total Packets Received OK - The number of all packets that were successfully
received.
Duplicate Packets Received - The number of duplicate packets that were
successfully received.
Overrun Errors - The number of packets received when there were no receive
buffers available. This is usually due to the host not reading the received
packets from the adapter fast enough.
PLCP CRC Errors - The number of times the radio started to receive a 802.11
PLCP header, but the rest of the packet was ignored due to a CRC error in the
PLCP header.
PLCP Format Errors - The number of times a 802.11 PLCP header was received
with a valid CRC, but the rest of the packet was ignored due to an unknown value
in the PLCP header.
PLCP Length Errors - The number of times a 802.11 PLCP header was received,
but the rest of the packet was ignored due to an illegal PLCP header length.
MAC CRC Errors - The number of packets that had a valid 802.11 PLCP header,
but contained a CRC error in the data portion of the packet.
Partial Packets Received - The number of fragments that were discarded because
the entire packet was not successfully received.
SSID Mismatches - The number of times that the radio tried to associate to an
Access Point but was unable to due to the fact that the radio’s SSID was not the same as the Access Point’s SSID.
AP Mismatches - The number of times that the radio tried to associate to an
Access Point but was unable to due to the fact that the Access Point was not the Specified Access Point.
Data Rate Mismatches - The number of times that the radio tried to associate
to an Access Point but was unable to due to the fact that the radio’s Data Rate was not supported by the Access Point.
Authentication Rejects - The number of times that the radio tried to
authenticate with an Access Point but was rejected by the Access Point.
Authentication T/O - The number of times that the radio tried to authenticate
with an Access Point but was unable to because the Access Point did not respond
quick enough.
Association Rejects - The number of times that the radio tried to associate
with an Access Point but was rejected by the Access Point.
Association T/O - The number of times that the radio tried to associate with
an Access Point but was unable to because the Access Point did not respond quick
enough.
Packets Aged - The number of packets received successfully but were discarded
by the radio because either all fragments were not received within 10 seconds
or the host did not read the packet from the adapter within 10 seconds.
Up Time - The amount of time (in hours:minutes:seconds) since the last time
the card was reset. If the card has been running for more than 24 hours, the time
is displayed as (days, hours:minutes:seconds).
Transmit Statistics:
Multicast Packets Transmitted - This is the number of multicast packets
transmitted.
Broadcast Packets Transmitted - This is the number of broadcast packets
transmitted.
Unicast Packets Transmitted - This is the number of unicast packets
successfully transmitted.
Bytes Transmitted - This is the number of bytes of data successfully
transmitted.
Beacons Transmitted - This is the number of beacon packets transmitted.
Ack Packets Transmitted - This is the number of Ack packets transmitted in
response to successfully received unicast packets.
Single Collisions - This is the number of packets that had to be retransmitted
once, due to a collision.
Multiple Collisions - This is the number of packets that had to be
retransmitted more than once due to additional collisions.
Packets No Deferral - This is the number of packets that were able to be
transmitted immediately, without being delayed due to energy detect or protocol
deferral.
Packets Deferred Protocol - This is the number of packets deferred (delayed)
from being sent immediately due to 802.11 protocol reasons (such as not enough
time left in the current hop to send the packet).
Packets Deferred Energy Detect - This is the number of packets that were
deferred (delayed) from being sent immediately due to RF energy already being
detected. This could be caused by another radio transmitting a packet, or by some
other RF source ‘jamming’ the signal (like a microwave oven).
Packets Retry Long - This is the number of normal data packets that were
retransmitted.
Packets Retry Short - This is the number of RTS packets that were
retransmitted.
Packets Max Retries - This is the number of packets that have failed to be
transmitted successfully after exhausting the maximum number of retries.
RTS Packets Transmitted - This is the number of RTS packets that were
successfully transmitted.
Packets Ack Received - This is the number of packets transmitted that had
their corresponding Ack packet successfully received.
Packets No Ack Received - This is the number of packets transmitted that DID
NOT have their corresponding Ack packet successfully received.
CTS Packets Transmitted - This is the number of CTS packets transmitted in
response to a successfully received RTS packet.
Packets CTS Received - This is the number of CTS packets received in response
to a RTS.
Packets No CTS Received - This is the number of packets for which no CTS
packet was received in response to a RTS packet being sent.
Packets Aged - This is the number of packets that were discarded by the
adapter due to the fact that they were not successfully transmitted within 5 seconds.