Friday, August 16, 2013

IxNetwork Traffic: How to measure Latency and jitter


Setup information :
2 ports connected back to back
Port1 IP=1.1.1.1
Port2 IP=1.1.1.2
Send traffic from Port1 to Port2 and check latency/jitter.

Step1.  Enable Latency and Jitter measurements for the test
In order to measure jitter you will need to enable  Latency and Delay Variation statistics measurements from traffic options.

Go to Test Options (main ribbon) -Traffic Options and enable Latency and Delay Variation

There are some restrictions regarding which set of statistics can work together, please check the bellow compatibility table



Step2. Configure the ports 


Step3. Create a Traffic Item
On flow tracking page make sure that you enable Latency  Bin measurements and flow tracking.
Since the latency variation is a perFlow statistics enable some sort of  flow tracking.
I’ve chosen Flow tracking based on Traffic Item



Step4. Apply and start the traffic

Step5. Verifying the results
On main ribbon on View tab  verify that Statistics button is  pressed








On main ribbon on Data tab verify that Traffic Statistics button is pressed

On the  bottom part of the screen  on Traffic Item Statistics you should see by default all the statistics 




If you want to see only the latency related one choose the predefined Latency tab