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Adaptive multi-topology IGP based traffic engineering with near-optimal network performance
Author(s)
Date Issued
2008
Conference
ISBN
9783540795483
9783540795490
Citation
Wang, N., Ho, K. H., & Pavlou, G. (2008 May 7). Adaptive multi-topology IGP based traffic engineering with near-optimal network performance. IFIP Networking Conference 2008, Singapore.
Type
Conference Paper
Abstract
In this paper we present an intelligent multi-topology IGP (MT-IGP) based intra-domain traffic engineering (TE) scheme that is able to handle unexpected traffic fluctuations with near-optimal network performance. First of all, the network is dimensioned through offline link weight optimization using Multi-Topology IGPs for achieving maximum path diversity across multiple routing topologies. Based on this optimized MT-IGP configuration, an adaptive traffic engineering algorithm performs dynamic traffic splitting adjustment for balancing the load across multiple routing topologies in reaction to the monitored traffic dynamics. Such an approach is able to efficiently minimize the occurrence of network congestion without the necessity of frequently changing IGP link weights that may cause transient forwarding loops and routing instability. Our experiments based on real network topologies and traffic matrices show that our approach has a high chance of achieving near-optimal network performance with only a small number of routing topologies.
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