Introduction to Network Simulator NS2

Abstract

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A scalable architecture for ordered parallelism

“…First, they are common in graph analytics, especially in search problems [33,55]. Second, they are important in simulating systems whose state evolves over time, such as circuits [47], computers [12,59], networks [37,72], healthcare systems [39], and systems of partial differential equations [32,44]. Third, they are needed in systems that must maintain externally-imposed order constraints, such as geo-replicated databases where transactions must appear to execute in timestamp order [14], or deterministic architectures [17,45] and record-andreplay systems [36,77] that constrain the schedule of parallel programs to ensure deterministic execution.…”

Associate Adaptable Transactional Information Store in the Cloud Using Distributed Storage and Meta Data Manager

“…If Associate in Nursing OTM has with success non heritable a lease, then the data manager ensures that the OTM has exclusive access to the partition, and thus the OTM can execute transactions on the partition while not the necessity for distributed synchronization. This mechanism of distributed lease maintenance is analogous to it supported by Chubby [5] and employed in Bigtable [32].…”

“…Similarly, Chubby [5], that uses the valuable Paxos agreement protocol [14], forms the core of ascendible information management systems like Google classification system [11] and Bigtable [7]. These systems demonstrate that even though the paradigm of distributed databases wasn't successful, plenty of vital ideas that were developed for these systems will be effectively employed in trendy scalable systems.…”

Agent Based Intrusion Detection System in MANET

“…Network Simulator 2 (NS2.33) [6][7] is taken as a tool for simulation purpose. The Network Simulator 2 is a tool of discrete event simulation in the network, and capable of simulating various types of networks.…”

“…The Network Simulator 2 is a tool of discrete event simulation in the network, and capable of simulating various types of networks. NS2 [6,7] consists of two languages, C++ and Otcl. C++ defines the internal mechanism of the simulation object, and Otcl set up simulation by assembling and configuring objects as well as scheduling discrete events.…”