Host-Based Transmission

Feature Set N-ANL9

Napatech SmartNIC
Content Type
Feature Description
Capture Software Version

In this chapter

This chapter describes the host-based transmission functionality, which enables high-speed transmission with low CPU load of frames located in a host buffer in the server application memory. Frames that have been received by an NT accelerator can be retransmitted by the same or on a different accelerator without modification.

Note: This chapter does not apply to NT200A01-2×100 and to NT200A01-2×100/40 running at 2 × 100 Gbit/s.


Host-based transmission can be used in three different scenarios:

  • For traffic generation where new frames are generated by the server application. This can be used, for instance, for network testing.
  • For replay where frames are captured and stored to memory or disk and retransmitted later. This can be used, for instance, for network analysis.
  • For relay where frames are being captured, analyzed and conditionally retransmitted based on defined criteria. This can be used, for instance, for network security.