Operation Manual

MP Access Point Commands
Mobility System Software Command Reference Guide
Version 7.3
12 – 334
CCMP Pkt Replays Number of CCMP packets that were resent by a client to the MP.
(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 MP 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 MP 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.
The counters above are global for all data rates. The counters below are for individual data
rates.
Note: If counters for lower data rates are incrementing but counters for higher data rates are not
incrementing, this can indicate poor throughput. The poor throughput can be caused by interference. If the
cause is not interference or the interference cannot be eliminated, you might need to relocate the MP in
order to use the higher data rates and therefore improve throughput.
TxUniPkt Number of unicast packets transmitted by the radio.
TxMultiPkt Number of multicast packets transmitted by the radio.
TxUniByte Number of unicast bytes transmitted by the radio.
TxMultiByte Number of multicast bytes transmitted by the radio.
RxPkt Number of packets received by the radio.
RxByte Number of bytes received by the radio.
UndcrptPkt Number of undecryptable packets received by the radio. It is normal
for this counter to increment even in stable networks and does not
necessarily indicate an attack. For example, a client might be sending
incorrect key information. However, if the counter increments rapidly,
there might be a problem in the network.
UndcrptByte Number of undecryptable bytes received by the radio. (See the
description for UndcrptPkt.)
PhyError Number of packets that could not be decoded by the MP. This
condition can have any of the following causes:
❑ Collision of an 802.11 packet.
❑ Packet whose source is too far away, thus rendering the packet
unintelligible by the time it reaches the MP.
❑ Interference caused by an 802.11b/g phone or other source.
It is normal for this counter to be about 10 percent of the total RxByte
count. It is also normal for higher data rates to have higher Phy error
counts than lower data rates.
Table 12– 2. Output for show ap counters (continued)
Field Description