Reducing Maximum Stretch in Compact Routing

14 years 5 months ago

Download www.stanford.edu

—It is important in communication networks to use routes that are as short as possible (i.e have low stretch) while keeping routing tables small. Recent advances in compact routing show that a stretch of 3 can be achieved while maintaining a sublinear (in the size of the network) space at each node [14]. It is also known that no routing scheme can achieve stretch less than 3 with sub-linear space for arbitrary networks. In contrast, simulations on real-life networks have indicated that stretch less than 3 can indeed be obtained using sub-linear sized routing tables[6]. In this paper, we further investigate the space-stretch tradeoffs for compact routing by analyzing a speciﬁc class of graphs and by presenting an efﬁcient algorithm that (approximately) ﬁnds the optimum space-stretch tradeoff for any given network. We ﬁrst study a popular model of random graphs, known as Bernoulli random graphs or Erd˝os-Renyi graphs, and prove that stretch less than 3 can be obtained in conju...

Mihaela Enachescu, Mei Wang, Ashish Goel

Real-time Traffic