what Route Request and Reply Route Request represent in the .tr file?
 

Hello I have a question please. Do (REQUEST) represent the (Get Route Request) and (REPLY) the( Reply Route Request) in the .tr file? How can I make a loop in .awk file with all the nodes sent and received ?
I use ns2.35

You never followed up in your other thread, and again here you don't say what version of Linux you're running. If it's the same as your other thread, it's Ubuntu 18.04...and you were advised that NS2.35 only goes up to Ubuntu 14.

Beyond that, you aren't posting what code YOU have written/done/tried, or given us any error messages to work with. Again, read the "Question Guidelines", because you should do research on your own first. Putting "how to write an awk loop" into Google pulls up a LOT of examples; start there.