User guide

6-10
BreezeNET DS.11b User’s Guide
Manual Version 1.0
Remote Statistics Tallies
Select the
Remote tab in the monitor mode. Select either one of the interfaces
from the pull-down menu to display the statistics for the wireless network
interface(s). Then, use the following to diagnose link quality:
1. Compare the number of
In errors with the number of Bridge in packets.
! When the number of “In errors” is 1% or more of the “Bridge in
packets”, this may indicate that the wireless medium is very busy.
2. To verify this assumption, also compare the number of packets “Out errors”
with the number of “Bridge out packets”.
! When the number of
Out errors is 1% or more of the Bridge out packets,
it is likely that one or more stations suffer form a poor link quality.
3. Compare the number of packets
Out collisions with the number of Bridge out
packets
.
! If the number of
Out collisions is 1% or more of the Bridge out packets,
it is likely that the wireless medium is very busy. This might be caused
by many retransmitted frames, but it could also refer to many stations
trying to communicate at the same time.
4. You can also use the AP Manager remote link test to analyze whether one
or more stations show a poor link quality:
! When the poor link quality is caused by a low signal level, the station is
almost out of range of the Base Station.
! When the poor link quality is caused by a high noise level, there is a
source of interference in the signal path between the station and the
Base Station.
5. When one or more stations show a poor link quality, re-transmissions of
frames will disturb overall statistics and performance.
! You may be able to solve the problem by either moving the station(s)
or eliminating the source of interference.
! If the problem is a poor signal you may consider:
" Connecting a range extending antenna to the station or access
point that suffers from poor radio performance.
" Adding an extra Base Station to the network, or
" Adjusting the placement of your Base Stations to provide coverage
for all wireless stations.
! If you suspect a “hidden” station, see RTS/CTS Medium Reservation.