Matej Kultan; Martin Medvecky

Congestion Aware Multipath Routing: Aggregation Network Applicability and IPv6 Implementation

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Author(s)

1. Institute of Telecommunications, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Slovakia

* Corresponding author.

DOI: https://doi.org/10.5815/ijitcs.2015.11.02

Received: 10 Feb. 2015 / Revised: 1 May 2015 / Accepted: 20 Jul. 2015 / Published: 8 Oct. 2015

Index Terms

Multipath routing, stability factor, load-balancing, congestion avoidance, IPv6

Abstract

Currently, the service provider network capacity utilization is low due to the shortest multipath based routing protocols Opens Shortest Path First (OSPF) and Intermediate System-to-Intermediate System (ISIS). Due to inefficient routing approach, certain paths can be overloaded and link capacity is required while alternative paths are unused. The overall network has to be dimensioned with higher link bandwidth requirements introducing additional line, linecard, routing engine and overall solution cos. This paper provides improved Congestion Aware Multipath Routing (CAMRv2) algorithm overview. The new network routing algorithm allows higher throughput, network load-balancing and stability to ensure lower congestion and data drop on critical links. The algorithm discovers unused network resources and dynamically adapts to the actual traffic load and displacement. The focus in this paper is on new parameters for path computation performance improvement. Additionally, detailed IPv6 source routing CAMRv2 implementation for parallel coexistence with present networks is presented. Finally, the new routing algorithm is simulated in several scenarios over aggregation network. The result of simulations have proved better performance and resource utilization of the proposed algorithm in sparse aggregation network in terms of load-balancing between uplinks to the core network.

Cite This Paper

Matej Kultan, Martin Medvecký, "Congestion Aware Multipath Routing: Aggregation Network Applicability and IPv6 Implementation", International Journal of Information Technology and Computer Science(IJITCS), vol.7, no.11, pp.9-16, 2015. DOI:10.5815/ijitcs.2015.11.02

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International Journal of Information Technology and Computer Science (IJITCS)