I was recently asked about options for network packet generation (low volume and highly distributed for measurement, so cheaper slower hardware is OK), and I may as well share.
- Ostinato aims to be wireshark in reverse.
- tcpreplay is what it says.
- For more control over emitted packets, look at hping.
- Or, if you're programming in Python, look at scapy.
- The perfSonar toolkit would handle the distributed tests.
- SmokePing might be simpler for the small-but-distributed case.
That should get you started.
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