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Frame Processing

When processing high-bandwidth network traffic, the required CPU power for achieving real-time application performance is intensified. Fortunately, in many cases it is not necessary to process all frames in the stream, and/or the frames can be processed independently by a number of CPUs (see Multi-CPU Support).

Napatech’ s unique Frame Decoding technology is the foundation for a comprehensive and advanced set of features to "condition" the frame stream in a way that maximizes the performance of network applications and minimizes wasteful processing of unwanted frames. 

Such features are:
  • Multi-Port Data Merge: Data that is received on several ports can be merged into a single data stream on the adapter.
  • Frame Buffering: Onboard network adapter memory buffer allow frames to be buffered during micro-burst or PCI Express bus congestion situation.
  • Frame Classification: The network adapter frame decoder ensures protocol recognition of all mayor layer 2 to 4 protocols.
  • Frame and Protocol Information: For each Ethernet frame received, frame and protocol information is made available to the host application.
  • Fixed, Dynamic and Conditional Slicing: Cut away and discard part of a frame, either by truncating it to a fixed length, or by slicing away frame contents from a specified offset point, dependent on protocols and encapsulations.

Additional Information

Highlights:
  • Pre-selects specific traffic to be processed
  • Reduces application CPU load further
  • Reduces frame clutter
  • Enables application behavior optimization

See Also:
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