User's Manual

140 APCD-LM043-4.0
12 Troubleshooting
G
TIP Record key EUM
statistics from
<stats
mac>
(see Table27on
page 129 and Table 28
on page 131), clear the
statistics, then review
and record the statistics
after traffic has been
passed for 10 or 15
seconds.
The retransmission rate,
defined in
Monitoring the
Network
on page 127, is
low.
The slowdown is likely
not due to the radio
network. Check the PC.
Go to the local troubleshooting procedures
outlined in Table 32 on page 140.
Table 32 Local Troubleshooting — EUM (Service Not Available)
What should I do? What is a good result?
What does a good
result mean?
What if I do not get a good result?
TIP When using a substitute PC as part of the troubleshooting procedure, be sure to clear the Customer Table in the EUM, to allow the
substitute PC to be recognized by the EUM. This can be done through the CLI command, by entering
<cust flush>,orby
resetting the EUM.
A
Verify settings Connect a PC to the
EUM console port with a
serial cable. Bring up the
CLI prompt, and type
<ip> <cr>, then
<radio> <cr>.
The values displayed
should be the operator-
assigned parameters.
Go to Test B. Input the proper configuration. Check to see if
the reported problem has been resolved. If it
has not been resolved, go to Test B.
B
Verify the radio link Check the received
signal level.
The center LED on the
EUM is flashing rapidly,
or ON solidly.
The received signal is
>
-80dBm, which should
provide enough margin
for stable performance.
Go to Test C.
• If there is no LED activity, confirm the
radio frequency.
• Use the RSSI or Configuration Utility to
measure the received signal strength.
• Check the antenna connections.
• Improve antenna pointing and/or
location.
Table 31 Remote Troubleshooting — EUM (Service Degraded)
What should I do? What is a good result?
What does a good
result mean?
What if I do not get a good result?