Netscout OneTouch AT 10G, Руководство пользователя

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Chapter 9: Packet Capture
Packet capture is the process of recording network traffic in the
form of packets.
Packet capture and analysis can be used to:

Analyze network problems

Debug client/server communications

Track applications and content

Ensure that users are adhering to administration policies

Verify network security
The OneTouch AT 10G analyzer can silently monitor and record
network traffic. This is called Standalone Capture. The analyzer
can also record all traffic to and from itself during AutoTest. This
is called AutoTest Capture.
The analyzer saves captured packets to a .cap file on the SD card.
Files are stored in pcap format.
The saved capture file can be analyzed with ClearSight Analyzer
or other packet capture analysis software.
General Information
Using Packet Capture Filters
Capture filtering lets you capture and analyze only packets that
are pertinent to the problem you are troubleshooting and
solving.
For example:
 You can create a wired packet capture filter to capture only
packets that are related to a specific application (based on IP
address and port number).