User's Manual

Table Of Contents
APCD-LM043-4.0 147
12 Troubleshooting
.
D
Check for Key Statistics
degradation
in the CLI, type
<stats
mac>
.
Key Statistics, described
in Monitoring the
Network
on page 127,
should meet general
criteria listed, and/or be
similar to past values.
No change in the
interference environment
indicated.
An increase in retry rates is potentially an
indication of an interferer at the CCU. If the
number of EUMs is small, a specific EUM-link
problem could be degrading this statistic, so
further analysis may be warranted at the EUM
link level.
Table 34 Remote Troubleshooting CCU
What should I do? What is a good result?
What does a good
result mean?
What if I do not get a good result?
Table 35 Local Troubleshooting CCU
What should I do? What is a good result?
What does a good
result mean?
What if I do not get a good result?
A
Check the CCU Confirm power. Power LED illuminated. CCU has adequate
powering. Go to Test B.
Check main AC power to CCU AC-DC
adaptor. Check AC-DC adaptor power output.
Correct or replace, as required.
B
Access the CLI through
the serial port.
-- -
C
Confirm basic
configuration (
<ip>,
<ra>, <auth>
)
Configuration should be
as originally configured.
Go to Test D. Correct the configuration and retest. If system
is now functional, review personnel access
permission to CCU.
D
Ping CCU Ethernet port. Successful ping
response.
Ethernet port circuitry
OK.GotoTestE.
Suspect CCU hardware.
E
Ping the network. Successful ping
response.
Confirms network
connection to CCU. Go
to Te st F.
Check cabling, upstream equipment.
F
Ping the CCU radio port. Successful ping
response.
Radio control circuitry is
OK.GotoTestG.
Suspect CCU hardware.
G
Confirm links to EUMs Type
<air>.All/mostEUMsare
registered.
EUMs can communicate
with CCU. Go to Test H.
Go to Test K. Verify RF system at the CCU. If
a captive EUM is available, see TIP I.
H
Ping selected EUMs. EUMs respond without
errors.
Basic CCU network is
good. Go to TIP I.
Go to Test K. If a captive EUM is available,
see TIP I.