This paper compares the performance of two realizations of the same protocol: its implementation on XORP, the extensible Open Router Platform from Berkeley, on Linux laptops with IEEE 802.11 interfaces, and its simulation in NS2. We extensively tested this protocol in a number of ways: simulations, executing the protocol over wireless links in a static environment, and executing it in emulated mobile scenarios. In a stationary environment, all results are close to each other, and the mobility emulator introduces negligible additional overhead. In mobile scenarios, our measurements in the emulated environment differ quantitatively and qualitatively from the simulation results.

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Conference Proceedings - 2004 Global Mobile Congress
Kunz, T. (2004). Implementation vs. simulation: Evaluating a MANET multicast protocol. Presented at the Proceedings - 2004 Global Mobile Congress.