What you want to do is study QoS and how traffic flows are affected by network conditions and what you can do to provide priority to the important traffic and allow the routers and switches to discard the less important traffic when congestion occurs. I like to set up a few VoIP calls between routers and then throw a file transfer or 2 in there with some HTTP. Really to do this all you need is 2 routers with a serial connection between them, 2 phones with fxs interfaces on the routers, and 2 windows XP pc's for http and ftp. You'll quickly be able to overwhelm the serial line and see what happens to the phone calls. You could also use some sort of soft phone for the voice traffic. If you simulate the traffic it can be tough to understand what is happening to the calls.

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Ethernet packet generator - packETH is a Linux GUI packet generator tool for ethernet. Lisa Gerrard Ashes And Snow Rarity. It allows you to create and send any possible packet or sequence of packets on the ethernet. Dedicated capture tools; Monitoring/tracing tools; Traffic generators; Capture file anonymization; Capture file repair; Capture file conversion; Collections. (GPL, Windows). Netsniff-ng is a free, Linux network analyzer and networking toolkit. NetworkMiner A network forensic analysis tool (GPL, Windows). PackETH is a Linux GUI packet generator tool for ethernet. The project allows you to create and send any possible packet or sequence of packets on the ethernet.

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