102
PRO 11 SERIES WIRELESS ETHERNET
Problem and
Indication
Possible Cause
Corrective Action
High-quality
1. Too much interference 1. Move the unit or the antennas out of
signal but
or multipath propagation.
the range of interference.
throughput is
2. Ethernet port of the
• Check counters to see if more than
poor.
unit may be faulty.
10% of total transmitted frames are
retransmitted fragments
(see Section 3.6.1).
• Check if more than 10% of total
received data frames are bad
fragments (see Section 3.6.1).
2. Verify Ethernet port activity by
checking Ethernet counters (see
Section 3.6.1).
Link signal
1. Possible multipath or
Reposition the unit outside range of
quality low or not structural interference.
possible interference.
as good as
• Check for heavy metal structures (for
expected (indoor
example, elevators, racks, file
installation).
cabinets) near unit.
• Check counters for excessive retrans-
missions or received bad fragments.
• Site may require higher-gain
antennas.
• Site may require a multicell structure
(multiple Access Points) because of
multipath/structural interference.
Link signal
There may be a problem
Refer to Section 5.3:
quality low or not with certain aspects of
• Is there a clear line of sight?
as good as
outdoor installation con-
• Verify antenna height.
expected (out-
siderations.
• Verify antenna polarization.
door installation).
• Verify antenna alignment.
• Check length of cable between
antenna and unit (an overly long
extension cable may adversely affect
performance).
Summary of Contents for LW0050A
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