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Joint optimization of intra- and inter-autonomous system traffic engineering
Date Issued
2006
Publisher
IEEE
ISBN
1424401429
ISSN
1542-1201
2374-9709
Citation
Ho, K. H., Howarth, M., Wang, N., Pavlou, G., & Georgoulas, S. (2006). Joint optimization of intra- and inter-autonomous system traffic engineering. In IEEE (Ed.). 2006 IEEE/IFIP network operations and management symposium NOMS 2006. 2006 IEEE/IFIP Network Operations and Management Symposium NOMS 2006, Vancouver, BC, Canada. IEEE.
Type
Conference Paper
Abstract
Traffic Engineering (TE) is used to optimize IP operational network performance. The existing literature generally considers intra- and inter-AS (Autonomous System) TE independently. However, the overall network performance may not be truly optimized when these aspects are considered separately. This is due to the interaction between intra- and inter-AS TE, where a solution of intra-AS TE may not be a good input to inter-AS TE and vice versa. To remedy this situation, we propose considering intra-AS aspects during inter-AS TE and vice versa. We propose a joint optimization of intra- and inter-AS TE to further improve the overall network performance by simultaneously finding the best egress points for the inter-AS traffic and the best routing scheme for the intra-AS traffic. Three strategies are presented to attack the problem, namely sequential, nested and integrated optimization. Our simulation study shows that, compared to sequential and nested optimization, integrated optimization can significantly improve the overall network performance by accommodating 30%-60% more traffic demands.
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