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Troubleshooting common issues
Chapter 16: Troubleshooting 353
Third, do not, under any circumstances, share interrupts, I/O ports, or memory
addresses between adapters. No matter what has worked before or what
might work in the future, sharing interrupts or memory settings is not a valid
configuration.
Troubleshooting checklist:
Does your network work without any Observer programs or drivers loaded? If
not, check your network installation instructions. After your network appears to
be running correctly, install Observer again. Try installing Observer on a different
system and see if you experience the same problem. This does not mean that
you will not be able to use Observer on the desired system. It may give you some
insight into the problem that you are having.
Troubleshooting a slow probe system
If a probe is overloaded, consider whether any of the following affect the
system. You can clear these one at a time to see if that resolves the system’s
issue.
Although all of the settings discussed in this section are configured in Observer ,
they are saved to the probe.
♦
A scheduled capture can be causing a system slow down. Determine if any
scheduled capture is occurring. On the Home tab, in the Capture group,
click Live > Packet Capture and then Settings > Schedule .
♦
Some extra processing happens when you have triggers and alarms
configured. Determine what alarms are enabled by clicking the Alarm
Settings button in the lower left.
♦
Are you running real-time Expert Analysis? Observer requires some
processing resources to get through the data, which could be a lot of data.
Real-time expert processes data as it is received. This requires continuous
processing of incoming data while the real-time expert is running.
♦
Are you collecting combined station statistics or protocol distribution
summary for your network? If so, these could be causing the system to
slow down. To determine if you are, click the File tab, and click Options >
General Options . Scroll to Startup and runtime settings and clear these
settings, if necessary:
●
Collect combined station statistics at all times
●
Collect protocol distribution for the whole network
♦
Are you collecting network trending statistics? If so, is the sampling
divider less than 10? If so, increase the sampling divider to 10 or greater.
To determine your sampling divider, on the
Home
tab, in the
Capture
group, click Network Trending > Network Trending . Then click Settings
> General tab. In the Collection Settings section, change the sampling
divider.
A probe is not connecting to the analyzer or vice versa
If the probe is not connecting, it could be one of several reasons. The log window
in Observer has useful information to give you an idea of why the connection is
failing.