Recorded traffic

Housekeeping ► Recorded traffic

The Recorded traffic traces screen lists captures you have made on the NAM Console.

These traces are used when adding a software service with the software service wizard. For details, see Adding a software service with the wizard.

Managing existing captures

For each captured trace, the screen displays:

  • Trace name
    The name you gave the trace when you started the capture.
  • Capture time
    The starting time of the capture.
  • Duration
    The length of the capture. You can specify the   using the TCPDUMP filter edit box on the Record traffic screen.
  • Applied filters
    Filters applied during this capture using the TCPDUMP filter edit box on the Record traffic screen.
  • Actions
    Actions you can take related to this capture at this time.
    • Reload : the selected trace is re-read so that the statistics can reflect the new configuration settings.

To filter the list, type a search string in the Filter box and click OK. The list will show only those traces that match the search string.

To remove one or more traces, select the check box next each unneeded trace file and then click Delete.

Recording traffic

Recording traffic can negatively affect the performance of the NAM Probe during normal operations, especially if you are running in a high-traffic environment or a 64-bit NAM Probe with the native driver.

Use the Record traffic screen to describe and start a traffic capture.

  1. Open Housekeeping ► Recorded traffic.
  2. Click Record Traffic.
  3. Specify the following:
    • Trace name
      This is the name under which the capture will be listed on the Recorded traffic traces screen.
    • Capture time
      This sets a limit on the duration of the capture.
    • Trace size per NAM Probe
      This sets a limit on the total size of the capture on the NAM Probe.
    • TCPDUMP filter
      For syntax help, click the TCPDUMP filter syntax link on the screen.
    • Remove encapsulation
      Whether to remove encapsulation from the trace.
      Default: selected (remove encapsulation)
  4. Click the record button
    record button
    to start the capture.
    • Capture progress is displayed like this
      Capture progress
    • Click
      stop capture
      while a capture is in progress if you need to stop the capture before it finishes as per the time and size limits you specified. The capture up to that point will be saved and listed on the Recorded traffic traces screen.
    • You can close the recording window and browse reports while the trace recording is in progress. This does not interfere with the capture process. However, the recording will stop if you edit software services using the software service definition wizard.
    • If the capture finishes successfully, the message "New trace has been recorded successfully." is displayed.
    • If you receive an error message such as "Recording finished with an error." click the message to see details.
  5. Close the Record traffic screen.
    The capture is listed in the table of recorded traffic traces. If the recording is still in progress, statistics are updated automatically.
  6. Click your trace to select it.
    The trace details are listed per NAM Probe involved.

The trace will be available for selection in the Traffic trace list in the Add Software Service wizard. For more information, see Adding a software service with the wizard.

Downloading captured files

In the Actions column, click Download to download the file or open it in an application.

Capture files are stored in the following location:

/var/spool/adlex/spc/*.pcap

where spc = S mart P acket C apture. There is one file for each NAM Probe CPU thread.

When you click the download link in the NAM Console, multiple partial files that are created in the SPC folder for each capture are automatically merged for download.