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How to capture the duplicate frame in Spirent TestCenter when there are lots of other frames?

Answer

Please find the following procedure to identify which specific frames have sequence errors.

Step 1 – Tools

You will need Spirent TestCenter ports, Spirent TestCenter GUI configured
Spirent Wireshark (on Support site)

Step 2 – Configure traffic

Generate a traffic pattern that detects a sequence error. Please note that features unique to Spirent TestCenter will be more likely to find sequencing errors such as RFC-4818 MAC Randomization and Dynamically changing the Device Count while traffic is loading.

Step 3- Configure RX ports

a) Setup a Dynamic View on RX ports to show fields of interest of the packet and SEQUENCE ERROR >0. This is for your run-time stats
b) Configure the Capture Filter to the following. Set the StreamID to the correct ID (Not required, but will help you narrow the search)
c)  
d) Enable Real-Time Capture, Apply, then START capture
e) 
f) This will now capture and show packets of a specific stream only when sequence errors occur.

 


Product : Spirent TestCenter,PGA