Testing an OpenFlow application layer process may require preparation of test pcaps. Application layer processes may be tested more or less by following test file structure;
Result of start trigger may be easily observed but stop trigger may need following modification in order to be sure of not processing after the stop trigger;
In order to prepare such a file from an original, after extracting media, we should time shift and add to original.
Time shifting may be performed using editcap with option -t;
Two files may be combined using mergecap with default which performs merge considering packet timestamps,
to form a combined test pcap.
Now this file may be used to test OpenDaylight application layer selective media mirroring.