Set Up ntpcap.ini and ntservice.ini for Merging Between SmartNICs

Software Installation for Windows and WinPcap-NT Installation

Platform
Napatech SmartNIC
Content Type
Software Installation Guide
Capture Software Version
Link™ Capture Software 12.7

Before you begin

Note: For merging between SmartNICs, time synchronization is required. See DN-0985 and/or DN-0737 for further information regarding time synchronization.

About this task

If merging of packets between SmartNICs is needed, the packet-based interface must be used. This means that the PCAP packet descriptor and the PCAP-ns and PCAP-μs time stamp formats cannot be used.

Steps

To set up for merging packets between SmartNICs:

Procedure

  1. In the ntpcap.ini file, include the following to set up packet-based interface.
    NTInterface = Packet
  2. In the ntservice.ini file, include the following to select the standard packet descriptor (default setting).
    PacketDescriptor = NT
  3. In the ntservice.ini file, select one of the following to select the native, native UNIX (default setting), native UNIX ns or native NDIS time stamp format, respectively.
    • TimestampFormat=NATIVE_UNIX
      Note: The native UNIX format is based on a 10 ns unit with a 64-bit unit counter. The start time is January 1st 1970.
    • TimestampFormat=UNIX_NS
      Note: The native UNIX ns format is based on a 1 ns unit with a 64-bit unit counter. The start time is January 1st 1970.