Customer Service Center
Spirent KB Article
Doc ID: FAQ13439
Email Article Link
TestCenter: What is reason four (4) bytes are missing from the capture of the traffic created by Generate Stream Block (PCAP or capture replay) with Spirent TestCenter?
When you Generate Stream Block from PCAP, it recognizes the FCS and does not include as part of the data
There is an option in TestCenter under Settings -> Traffic -> Generate Stream Block Setting -> to Uncheck -> Exclude Ethernet FCS (By unchecking this TestCenter will decode the Ethernet checksum as payload) and TestCenter will add FCS
Product : Spirent TestCenter,Windows GUI