• Extensive coverage of both underlying concepts and practical applications of the IS-IS protocol • Detailed explanation of how the IS-IS database works and relevant insights into the operation of the shortest path first (SPF) algorithm • Comprehensive tutorial on configuring and troubleshooting IS-IS on Cisco routers • Advanced information on IP network design and performance optimization stra...

Software bugs are inevitable in software-defined networking (SDN) control planes, and troubleshooting is a tedious, time-consuming task. In this paper we discuss how one might improve SDN network troubleshooting by presenting a technique, retrospective causal inference, for automatically identifying a minimal sequence of inputs responsible for triggering a given bug in the control software. Ret...

In this paper we study the problem of incremental fault diagnosis and repair of mechatronic systems where the task is to choose actions such that the expected cost of repair is minimal. This is done by interleaving acting with the generation of partial conditional plans used to decide the next action. A diagnostic model based on Bayesian Networks is used to update the current belief state after...

IEEEE JSAC Special Issue on Measuring and Troubleshooting the Internet: Algorithms, Tools and Applications The ubiquity of Internet access, and the wide variety of Internet-enabled devices and applications, have made the Internet a principal pillar of the Information Society. However, its distributed nature leads to operational brittleness and difficulty in identifying and tracking the root cau...