Analysis of traffic correlation attacks on router queues
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Traffic source is of great importance to networks modeling. Different traffic characteristics can cause other components to behave differently, resulting in different network performance measures. On-off source model has been widely adopted in networks research to capture the bursty nature of the network traffic; its behavior is precisely defined. In this work, we carefully analyzed the common structure and the behavior of on-off sources and show that the on-off source provided by ns simulator does not correspond to any of the known on-off models. This inconsistency between on-off sources has a direct impact on queueing performance measures. Modelers must be aware of this fact when using the ns simulator to compare or validate results with other modeling frameworks. We suggest that the ns on-off source be replaced by a consistent deterministic on-off source; the implementation and analysis were provided.