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Merge file options for scrambles sequence numbers

david_khokhar
Newcomer

I have two trace files captured at different ends of a transaction with what is obviously a firewall in between that scrambles the sequence numbers. As a result when I perform a merge, it sees the same two packets from either end as different and stitches instead of merging them. As the sequence number changes, you could not use the TCP CRC either to identify the packets, however if you have a clean trace from either end that is just monitoring one connection you could perform a merge based on the same socket.

Is there any of doing this in TT. I loathe the thought of go through each packet pair and manually add the latency times together.

3 REPLIES 3

david_khokhar
Newcomer

Sorry the end should read is there any WAY of doing this in TT

gary_kaiser
Dynatracer
Dynatracer

Hi David,

You can edit the MatchingParamam.xml file in the DNA Config directory.

Change USESEQNUMBER and USEACKNUMBER to false.

At this point, the algorithm will rely on the IPID field to identify common packets.

Let me know if this works for you.

Gary

david_khokhar
Newcomer

Hello Gary,

That worked a treat, thanks.