2026-09-19T16:06:14Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/18419 2023-07-10 col_2142_5131 com_2142_5130

King, Samuel T. King, Samuel T. Mai, Haohui 2011-01-14T22:50:14Z 2011-01-14T22:50:14Z 2011-01-14T22:50:14Z Diagnosing problems in networks is a time-consuming and error-prone process. Previous tools to assist operators primarily focus on analyzing control plane configuration. Configuration analysis is limited in that it cannot find bugs in router software, and is harder to generalize across protocols since it must model complex configuration languages and dynamic protocol behavior. This paper studies an alternate approach: diagnosing problems through static analysis of the data plane. This approach can catch bugs that are invisible at the level of configuration files, and simplifies unified analysis of a network across many protocols and implementations. We present Anteater, a tool for checking invariants in the data plane. Anteater translates high-level network invariants into boolean satisfiability problems, checks them against network state using a SAT solver, and reports counterexamples if violations have been found. Applied to a large campus network, Anteater revealed 23 bugs, including forwarding loops and stale ACL rules, with only five false positives. Nine of these faults are being fixed by campus network operators. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2010-11-17T21:31:51Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 master-thesis.tar.bz2: 744324 bytes, checksum: 41d0f5ddbbb9bcb14f91ee7cb50056a7 (MD5) Mai_Haohui.pdf: 500779 bytes, checksum: 06c64236b9732b07e830da8774bf1aa7 (MD5) Made available in DSpace on 2011-01-14T22:50:14Z (GMT). No. of bitstreams: 3 Mai_Haohui.pdf: 500779 bytes, checksum: 06c64236b9732b07e830da8774bf1aa7 (MD5) license.txt: 4056 bytes, checksum: ccb6ce23a058623eac584b4fa7224fec (MD5) master-thesis.tar.bz2: 744324 bytes, checksum: 41d0f5ddbbb9bcb14f91ee7cb50056a7 (MD5) http://hdl.handle.net/2142/18419 en Copyright 2010 Haohui Mai Data-Plane Analysis Network Failure Satisfiability Diagnose network failures via data-plane analysis 2010-12 0112 University of Illinois at Urbana-Champaign Thesis M.S. PHD:Computer Science -UIUC 10KS0112PHD Computer Science 1434 Computer Science