Tcpreplay is a suite of tools that allows editing and replaying previously captured traffic in libpcap format. This can come handy in many situations, one common use is traffic pattern based behavior re-creation in a lab environment.
Tcpreplay suite comes with the following tools:
Tcpreplay suite comes with the following tools:
- tcpprep - multi-pass pcap file pre-processor which determines packets as client or server and creates cache files used by tcpreplay and tcprewrite
- tcprewrite - pcap file editor which rewrites TCP/IP and Layer 2 packet headers
- tcpreplay - replays pcap files at arbitrary speeds onto the network
- tcpliveplay - Replays network traffic stored in a pcap file on live networks using new TCP connections
- tcpreplay-edit - replays; edits pcap files at arbitrary speeds onto the network
- tcpbridge - bridge two network segments with the power of tcprewrite
- tcpcapinfo - raw pcap file decoder and debugger
Now in this setup we're interested in how our DUT device (Device Under Test) is reacting given a specific traffic pattern that is let's say very specific to this environment. I will assume the DUT is a Layer 3 device.
