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Network Performance Testing
I want to do a research project on network performance measurements; something like testing high bandwidth networks, generating network traffic and analyze the network's performance throughput.
I would appreciate any suggestions/pointers on the project, tools (available freely like the TTCP, iPerf etc.) and the approach.
Re: Network Performance Testing
Take a look at the offerings from Ixia Communications and Spirent Communications. Both make excellent refined tools for the examination of network performance. My personal preference? Ixia's offerings, particularly Chariot which it recently aquired from NetIQ.
A lot of your tool choice is dictated by which layer of the OSI model you want to test from and gather statistics from, you pretty much have the luxury of shoosing anything from layer 2 (MAC address) on up through layers 5-7 (usually anything above session is very compressed for network examination). You also need to make sure that whatever network interface you are testing is covered by either a hardware test generation solution or software agents to run on a host which has support for the interface.
So I guess the takeaways are
</font><ul type="square">[*]<font size="2" face="Verdana, Arial, Helvetica">What interface do you need to test?</font>[*]<font size="2" face="Verdana, Arial, Helvetica">Which statistics do you want to gather?</font>[*]<font size="2" face="Verdana, Arial, Helvetica">Which OSI layer do you want to sample from?</font>[/list]<font size="2" face="Verdana, Arial, Helvetica">
The answer to the above questions should naturally lead you to a set of tools which can accomplish the task at hand.
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