Post-Lab Questions

Please enter the answers to these questions into your lab notebook.

1. Up to the point where a router buffer becomes full, which protocol (Reno or Vegas) has better performance (explain)?

2. Assume that there is no cross traffic on and end-to-end path, and that the capacity on that path is much greater than a single end host - which protocol (Reno or Vegas) will get better performance (explain)?

3. Provide an illustration of the evolution of CWND for Reno and Vegas on a path that has a capacity that is less than a single end host.

4. Which will have a bigger impact: implementing a new congestion control protocol on servers or implementing it on clients (explain)?

5. How might you infer the size of both the link capacity and RWND from the performance graphs provided by ethereal?