Browsing posts written by: Fred Klassen

Build Your Own 10GigE Wire-Rate NetFlow Traffic Generator Using Tcpreplay 4.0
March 12, 2014 by

Networking Technology, Performance Monitoring

Want to build a packet generator using free software and commodity hardware? Wouldn’t it be nice if that packet generator was just as fast as expensive hardware-based packet generators? What if it was more powerful, flexible and easier to use than commercial alternatives?

Why Test NetFlow with Tcpreplay 4.0
February 13, 2014 by

Networking Technology, Performance Monitoring

In my blog “NetFlow Performance Testing with Tcpreplay 4.0” I introduced new IP Flow / NetFlow features that I recently added to Tcpreplay, with the claim that this is the best solution for testing Layer 7 flow collectors. Today we discover how Layer 7 collectors differ from traditional flow collectors, and why they need to be tested
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NetFlow Performance Testing with Tcpreplay 4.0
February 6, 2014 by

Networking Technology, Performance Monitoring

When we set out to make a super fast and super accurate application-aware flow collector, we found ourselves with a dilemma. How do we test it? How do you generate complex combinations of business and recreational application traffic and at 10GigE speeds? How do we generate Candy Crush, YouTube and SalesForce plus hundreds of other
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