Agilent Technologies J3972A User's Guide Page 354

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Protocol Analyzer
Using Packet Capture Instances
5967–9446 353
To start an instance
1 Attach to the instance, if necessary.
2 Click the START button or choose InstanceStart.
When you start an instance, the current configuration (settings and
filter) is applied to the instance, and data collection begins.
Once an instance is started, you cannot change its configuration without
first stopping it.
You can also connect a packet capture instance to an alarm that controls
when the instance starts or stops.
In addition, you can start a packet capture instance by giving the
protanal command, as discussed on page 405. In this case, the filter
and settings to use are read from a file specified on the command line.
See Also “To attach to an existing instance” on page 350.
“Working with Configuration Files” on page 399.
“To save captured packets in a trace file” on page 393.
“To save filter/settings in a file” on page 400.
“Using the protanal Command” on page 405.
“Setting Alarms” on page 430.
Caution
When you restart an instance, the current configuration supersedes the
previous settings and filter. (To keep a configuration for future use, save
it in a file; refer to page 399 for instructions.)
In addition, any previously captured packets for that instance are
discarded. To keep the captured packets, ensure that you save them in a
file before you restart the instance. Refer to page 393 for instructions.
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