In spite (or perhaps due) to its simplicity, the question of simulating the M/M/1 queue has attracted much interest. It has served as a benchmark as various properties related to the simulation, or to the simulated performance measures, are known for this queue. In this paper we report on some experience that we obtained from this experiment that we believe will be of importance in simulating m...

We discuss and evaluate “Optimized Link State Routing Protocol” OLSR routing measurement performance analysis based on different simulation parameters. We have used NS-2 simulator tools for the performance of OLSR routing protocol simulation, we develop the simulation environment of small network (5, 10,15,25,30 Nodes) and observed the complexity of the mobile ad hoc network. The various perfor...

The task of simulation is often complicated for which many naive users often seek for relatively easier solutions. In many cases, simulations are done without any visual output which makes them nonattractive. In this paper, we present ViSim; a new simulation tool that has a user-friendly graphical interface. ViSim could be useful for researchers, students, teachers in their works, and for the d...

This paper describes and evaluates extensions for the support of the hierarchical Mobile IP protocol in the Network Simulator (ns-2). These extensions allow for the definition of multi-level hierarchies while allowing for automatic configuration of simulation scenarios. The hierarchical organisation of the Mobile IP infrastructure aims to enhance its scalability and to accelerate handovers that...

The network simulator ns-2 implements both wireless networks and emulation – a feature that allows to simulate a network environment among real stations. In contrast to a discrete event simulation an emulation is affected by various system parameters. The understanding of the impact of those parameters is crucial to obtain valid results from an emulation experiment. In this paper we evaluate a ...

IEEE 802.16 is yet a very recent technology and released hardware does frequently only support standards partially. The same applies to public available simulation tools, in particular for NS-2. As the latter is the de-facto standard in science and as we use it for our research in the context of the WEIRD project, we evaluate the of IEEE 802.16 support for NS-2. We present several general but a...