Troubleshooting › IPv6 Traffic Not Captured Correctly

IPv6 Traffic Not Captured Correctly

Symptom:

The following errors occur when I attempt to capture IPv6 traffic:

• Traffic that is sliced to "Headers Only" includes the IPv6 header but no TCP header.
• Filters based on Layer 4 header information (such as TCP port number) do not capture IPv6 traffic.

Solution:

You may need to update the FPGA (firmware) on the Napatech card. The following table identifies the FPGA versions necessary for capturing IPv6 traffic:

The portion of the FPGA version number in bold text is the determining factor. FPGAs with a number lower than 42 do not fully support decoding of the IPv6 packet header.

Use one of the following methods to verify the version of the FPGA:

• Click About in the Multi-Port Monitor web interface. The About page identifies the version number of the active Napatech FPGA.
• Run the following command from the Linux command line.

  sudo  /opt/napatech/bin/AdapterInfo
  

  The output includes a line indicating the active FPGA image.

The Napatech FPGA is not updated when you upgrade the Multi-Port Monitor software. Contact CA Technical Support for instructions and the FPGA images.