Stateful PCAP replay is an effective way to reproduce reality to your system under test and test the behaviors of your devices that are not visible with modeled traffic. Vulcan’s advanced Layer 4 replay provides a platform to replay your own PCAP with flexibility and scalability. In case of packet loss by the network, which is a normal behavior of any IP networks, Vulcan’s stateful TCP stack makes sure that the information delivery is reliable by means of TCP retransmission. Adaptive congestion control can be enabled with the measurement of round-trip latency between the client and the server.

This application note describes how to make your or PCAP file that conform to Vulcan’s replay engine, and how to use Vulcan’s replay scenario to scale up the traffic for high-performance testing.