Hub/Switch Reference Guide

AP Commands 361
Nortel WLAN—Security Switch 2300 Series Command Line Reference
User Sessions Number of clients currently associated with the radio.
Generally, this counter is equal to the number of sessions listed
for the radio in show sessions output. However, the counter can
differ from the counter in show sessions output if a client is
associated with the radio but has not yet completed 802.1X
authentication. In this case, the client is counted by this counter
but not in the show sessions output.
Although there is no specific normal range for this counter, a
high or low number relative to other radios can mean the radio is
underutilized or overutilized relative to the other radios.
(However, if the clients are VoIP phones, a relatively high
number of clients does not necessarily mean overutilization since
voice clients consume less bandwidth on average than data
clients.)
MIC Error Ct Number of times the radio received a TKIP-encrypted frame with
an invalid MIC.
Normally, the value of this counter should always be 0. If the
value is not 0, check the system log for MIC error messages and
contact Nortel TAC.
TKIP Decrypt Err Number of times a decryption error occurred with a packet
encrypted with TKIP.
(See the description for CCMP Pkt Decrypt Err.)
CCMP Pkt Replays Number of CCMP packets that were resent to the AP by a client.
(See the description for TKIP Pkt Replays.)
RadioResets Number of times the radio has been reset. Generally, a reset
occurs as a result of RF noise. It is normal for this counter to
increment a few times per day.
Transmit Retries Number of times the radio retransmitted a unicast packet because
it was not acknowledged. The AP uses this counter to adjust the
transmit data rate for a client, in order to minimize retries.
The ratio of transmit retries to transmitted packets (TxUniPkt)
indicates the overall transmit quality. A ratio of about 1 retry to
10 transmitted packets indicates good transmit quality. A ratio of
3 or more to 10 indicates poor transmit quality.
Note: This counter includes unacknowledged probes. Some
clients do not respond to probes, which can make this counter
artificially high.
Noise Floor Received signal strength at which the AP can no longer
distinguish 802.11 packets from ambient RF noise. A value
around -90 or higher is good for an 802.11b/g radio. A value
around -80 or higher is good for an 802.11a radio. Values near 0
can indicate RF interference.
802.3 Packet Rx Ct Number of raw 802.3 packets received by the radio. These are
LocalTalk (AppleTalk) frames. This counter increments only if
LocalTalk traffic is present.
Table 8: Output for show ap counters (continued)
Field Description