Inter-domain QoS routing: Optimal and practical study

• Type: Article in International Scientific Journal
• Date: 2007

Authors

prior, r (Author) FCUP; sargento, s (Author) Other

Journal

Title: IEICE Transactions on Communications

Vol. E90B

Pages: 549-558

ISSN: 0916-8516

Publisher: Maruzen Co., Ltd/Maruzen Kabushikikaisha

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-004-BFG

DOI: 10.1093/ietcom/e90-b.3.549

Abstract (EN): This paper addresses the problem of inter-domain QoS routing with Service Level Agreements (SLA) for data transport between peering domains, using virtual-trunk type aggregates. The problem is formally stated and formulated in Integer Linear Programming. As a practical solution, we define the QoSJNFO extension to the BGP routing protocol, conveying three different QoS metrics (light load delay, assigned bandwidth and a congestion alarm), and a path selection algorithm using a combination of these metrics. We present simulation results of QoSJNFO, standard BGP, and BGP with the QoS_NLRI extension, and compare them with the optimal route set provided by the ILP formulation. The results show that our proposal yields better QoS than standard BGP or BGP with the QoS_NLRI extension, since it is able to efficiently avoid congested paths, and that the impact of QoSJNFO in route stability is relatively low.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10