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INFOCOM
2005
IEEE

On static reachability analysis of IP networks

9 years 4 months ago
On static reachability analysis of IP networks
The primary purpose of a network is to provide reachability between applications running on end hosts. In this paper, we describe how to compute the reachability a network provides from a snapshot of the configuration state from each of the routers. Our primary contribution is the precise definition of the potential reachability of a network and a substantial simplification of the problem through a unified modeling of packet filters and routing protocols. In the end, we reduce a complex, important practical problem to computing the transitive closure to set union and intersection operations on reachability set representations. We then extend our algorithm to model the influence of packet transformations (e.g., by NATs or ToS remapping) along the path. Our technique for static analysis of network reachability is valuable for verifying the intent of the network designer, troubleshooting reachability problems, and performing “what-if” analysis of failure scenarios.
Geoffrey G. Xie, Jibin Zhan, David A. Maltz, Hui Z
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where INFOCOM
Authors Geoffrey G. Xie, Jibin Zhan, David A. Maltz, Hui Zhang, Albert G. Greenberg, Gísli Hjálmtýsson, Jennifer Rexford
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