Google Code-in

Tracing helps the users to understand the set of events that take place during a simulation run. ns-3 allows trace files can be generated in .pcap format which can then be opened in tcpdump for further analysis.

The student is expected to do the following:

1. Refer to 'examples/tutorial/second.cc' to understand how to enable PCAP in ns-3 programs.
2. Copy ‘examples/tutorial/first.cc’ to 'scratch'.
3. Modify 'scratch/first.cc' to enable PCAP support.
4. Run the modified program: ./waf --run scratch/first
5. Verify whether you have two PCAP files generated in the ns-3 root directory: first-0-0.pcap and first-1-0.pcap
6. Open the PCAP files in tcpdump: 'tcpdump -nn -tt -r first-0-0.pcap' and then 'tcpdump -nn -tt -r first-1-0.pcap'
7. Send the screenshot of tcpdump for evaluation.