Brocade Mobility 5181 Access Point Product Reference Guide (Supporting software release 4.4.0.0) - Manual (Page 204)

190 Brocade Mobility 5181 Access Point Product Reference Guide
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Viewing radio statistics summary
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5. Refer to the Errors field to reference retry information as well as data transmissions the target
Mobility 5181 Access Point 802.11a or 802.11 b/g radio either gave up on could not decrypt.
6. Click the Clear Radio Stats button to reset each of the data collection counters to zero in order
to begin new data collections.
7. Click the Logout button to securely exit the Access Point applet.
Retry histogram
Refer to the Retry Histrogram screen for an overview of the retries transmitted by an access point
radio and whether those retries contained any data packets. Use this information in combination
with the error fields within a Radio Stats screen to assess overall radio performance.
To display a Retry Histogram screen for an access point radio:
1. Select Status and Statistics -> Radio Stats -> Radio1(802.11b/g) Stats -> Retry Histogram
from the Mobility 5181 Access Point menu tree.
A Radio Histogram screen is available for each access point radio (regardless of single or
dual-radio model).
The table’s first column shows 0 under Retries. The value under the Packets column directly to
the right shows the number of packets transmitted by this access point radio that required 0
retries (delivered on the first attempt). As you go down the table you can see the number of
packets requiring 1 retry, 2 retries etc. Use this information to assess whether an abundance
of retries warrants reconfiguring the access point radio to achieve better performance.
2. Click Apply to save any changes to the Radio Histogram screen. Navigating away from the
screen without clicking Apply results in changes to the screens being lost.
Avg Client Noise Displays the average RF noise for all Clients associated with the
Mobility 5181 Access Point radio. The number in black represents
Client noise for the last 30 seconds and the number in blue
represents Client noise for the last hour. If Client noise is
excessive, consider moving the Client closer to the Mobility 5181
Access Point, or in area with less conflicting network traffic.
Avg Client SNR Displays the average Signal to Noise Ratio (SNR) for all Clients
associated with the Mobility 5181 Access Point radio. The Signal to
Noise Ratio is an indication of overall RF performance on your
wireless network.
Avg Num. of Retries Displays the average number of retries for all Clients associated
with the Mobility 5181 Access Point 802.11a or 802.11b/g radio.
The number in black represents retries for the last 30 seconds
and the number in blue represents retries for the last hour.
Dropped Packets Displays the percentage of packets the AP gave up on for all
Clients associated with the Mobility 5181 Access Point 802.11a or
802.11b/g radio. The number in black represents this statistic for
the last 30 seconds and the number in blue represents this
statistic for the last hour.
% of Undecryptable
Pkts Displays the percentage of undecryptable packets for all Clients
associated with the 802.11a or 802.11b/g radio. The number in
black represents packets for the last 30 seconds and the number
in blue represents packets for the last hour.