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Abstract
Networks are getting larger and more complex; yet administrators rely on rudimentary tools such as ping and traceroute to debug problems. We propose an automated and systematic approach for testing and debugging networks called "Automatic Test Packet Generation" (ATPG). ATPG reads router configurations and generates a device-independent model. The model is used to generate a minimum set of test packets to (minimally) exercise every link in the network or (maximally) exercise every rule in the network. Test packets are sent periodically, and detected failures trigger a separate mechanism to localize the fault. ATPG can detect both functional (e.g., incorrect firewall rule) and performance problems (e.g., congested queue). ATPG complements but goes beyond earlier work in static checking (which cannot detect liveness or performance faults) or fault localization (which only localize faults given liveness results).
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Cite it as
@misc{zeng2012automatic,
title = {Automatic test packet generation},
author = {Hongyi Zeng and Peyman Kazemian and George Varghese and Nick McKeown},
year = {2012},
journal = {ACM International Conference on emerging Networking EXperiments and Technologies (CoNEXT)},
pages = {241--252},
doi = {10.1145/2413176.2413205},
}