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On the Reliability of State-of-the-art Network Testbed Components

Network testbed usually produces a closer real-world environment in comparison with emulators or simulators in network research and development. However, few question whether the results derived from those testbeds are credible. In this research, we investigate the reliability of major components employed by some typical testbeds, including packet generators and packet forwarding devices. We utilize a Endace DAG card to capture the packets generated or forwarded by these components, evaluating their behavior in terms of flow throughput, accuracy and reliability. We believe that our study could shed light on network testbed design.