Concepts

The how-to guides show you what to type. These pages explain why it works that way, so you can reason about the tools instead of memorizing recipes.

• The replay model

  What "replaying" actually means, and why Tcpreplay works at Layer 2.

• The tcpprep cache pipeline

  How one capture becomes a direction-aware, two-NIC test.

• Timing & speed control

  How the scheduler reproduces — or overrides — a capture's timing.

• DLT plugins

  How the suite translates between link-layer types.