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Published in:
2010 | OriginalPaper | Chapter
Model Checking Programmable Router Configurations
Authors : Luca Zanolin, Cecilia Mascolo, Wolfgang Emmerich
Published in: Graph Transformations and Model-Driven Engineering
Publisher: Springer Berlin Heidelberg
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Programmable networks offer the ability to customize router behaviour at run time, thus increasing flexibility of network administration. Programmable network routers are configured using domain-specific languages. In this paper, we describe our approach to defining the syntax and semantics of such a domain-specific language. The ability to evolve router programs dynamically creates potential for misconfigurations. By exploiting domain-specific abstractions, we are able to translate router configurations into Promela and validate them using the Spin model checker, thus providing reasoning support for our domain-specific language. To evaluate our approach we use our configuration language to express the IETF’s Differentiated Services specification and show that industrial-sized DiffServ router configurations can be validated using Spin on a standard PC.