In the course of operating a network there are countless times when it’s incredibly useful to be able to generate very specific types of network traffic. Some examples I’ve personally encountered are:
- QoS troubleshooting (the ability to generate DSCP or CoS tagged packets)
- Reproducing specific traffic for troubleshooting purposes
- Validating access lists and security policies
- Testing how applications respond to unique traffic
A fantastic tool to accomplish these tasks, amongst many others, is Ostinato. Ostinato is cross-platform with API support so you can integrate it with existing tools and processes. In addition to browsing the web site I would highly recommend listening to the Packet Pushers Priority Queue episode 52. In this episode host Ethan Banks talks to one of the creators of Ostinato provides and provides great overview of the tool as well as how to put it to use.