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INFOCOM
2012
IEEE

Harnessing Internet topological stability in Thorup-Zwick compact routing

9 years 10 months ago
Harnessing Internet topological stability in Thorup-Zwick compact routing
—Thorup-Zwick (TZ) compact routing guarantees sublinear state growth with the size of the network by routing via landmarks and incurring some path stretch. It uses a pseudo-random landmark selection designed for static graphs, and unsuitable for Internet routing. We propose a landmark selection algorithm for the Internet AS graph that uses k-shells decomposition to choose landmarks. Using snapshots of the AS graph from 1997–2010, we demonstrate that the ASes in the kmax-shell are highly-stable over time, and form a sufficient landmark set for TZ routing in the overwhelming majority of cases (in the remainder, adding the next k-shell suffices). We evaluate path stretch and forwarding table sizes, and show that these landmark sets retain low average path stretch with tiny forwarding tables, but are better suited to the dynamic nature of the AS graph than the original TZ landmark selection algorithm.
Stephen D. Strowes, Colin Perkins
Added 28 Sep 2012
Updated 28 Sep 2012
Type Journal
Year 2012
Where INFOCOM
Authors Stephen D. Strowes, Colin Perkins
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