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2010

Always acyclic distributed path computation

13 years 9 months ago
Always acyclic distributed path computation
Abstract—Distributed routing algorithms may give rise to transient loops during path recomputation, which can pose significant stability problems in high-speed networks. We present a new algorithm, Distributed Path Computation with Intermediate Variables (DIV), which can be combined with any distributed routing algorithm to guarantee that the directed graph induced by the routing decisions remains acyclic at all times. The key contribution of DIV, besides its ability to operate with any routing algorithm, is an update mechanism using simple message exchanges between neighboring nodes that guarantees loop-freedom at all times. DIV provably outperforms existing loop-prevention algorithms in several key metrics such as frequency of synchronous updates and the ability to maintain paths during transitions. Simulation results quantifying these gains in the context of shortest path routing are presented. In addition, DIV’s universal applicability is illustrated by studying its use with a...
Saikat Ray, Roch Guérin, Kin Wah Kwong, Rut
Added 31 Jan 2011
Updated 31 Jan 2011
Type Journal
Year 2010
Where TON
Authors Saikat Ray, Roch Guérin, Kin Wah Kwong, Rute Sofia
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