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2008

Impact of hot-potato routing changes in IP networks

11 years 5 months ago
Impact of hot-potato routing changes in IP networks
Abstract-- Despite the architectural separation between intradomain and interdomain routing in the Internet, intradomain protocols do influence the path-selection process in the Border Gateway Protocol (BGP). When choosing between multiple equally-good BGP routes, a router selects the one with the closest egress point, based on the intradomain path cost. Under such hot-potato routing, an intradomain event can trigger BGP routing changes. To characterize the influence of hot-potato routing, we propose a technique for associating BGP routing changes with events visible in the intradomain protocol, and apply our algorithm to a tier-1 ISP backbone network. We show that (i) BGP updates can lag 60 seconds or more behind the intradomain event, (ii) the number of BGP path changes triggered by hot-potato routing has a nearly uniform distribution across destination prefixes, and (iii) the fraction of BGP messages triggered by intradomain changes varies significantly across time and router locati...
Renata Teixeira, Aman Shaikh, Timothy G. Griffin,
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TON
Authors Renata Teixeira, Aman Shaikh, Timothy G. Griffin, Jennifer Rexford
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