Computer Science – Networking and Internet Architecture
Scientific paper
2004-11-12
Computer Science
Networking and Internet Architecture
Master Thesis, May 2002, Computer Science Department, Wayne State University, Detroit, Michigan, USA, 146 pages
Scientific paper
Although the current Internet Protocol known as IPv4 has served its purpose for over 20 years, its days are numbered. With IPv6 reaching a mature enough level, there is a need to evaluate the performance benefits or drawbacks that the new IPv6 protocol will have in comparison to the well established IPv4 protocol. Theoretically, the overhead between the two different protocols should be directly proportional to the difference in the packet's header size, however according to our findings, the empirical performance difference between IPv4 and IPv6, especially when the transition mechanisms are taken into consideration, is much larger than anticipated. We first examine the performance of each protocol independently. We then examined two transition mechanisms which perform the encapsulation at various points in the network: host-to-host and router-to-router (tunneling). Our experiments were conducted using two dual stack (IPv4/IPv6) routers using end nodes running both Windows 2000 and Solaris 8.0 in order to compare two different IPv6 implementations side by side. Our tests were written in C++ and utilized metrics such as latency, throughput, CPU utilization, socket creation time, socket connection time, web server simulation, and a video client/server application for TCP/UDP in IPv4/IPv6 under both Windows 2000 and Solaris 8.0. Our empirical evaluation proved that IPv6 is not yet a mature enough technology and that it is still years away from having consistent and good enough implementations, as the performance of IPv6 in many cases proved to be significantly worse than IPv4.
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