A novel algorithm for OSPF link flap damping

Yang Yang; Guangyi Liu; Xiaokang Lin

doi:10.1117/12.570706

8 February 2005 A novel algorithm for OSPF link flap damping

Yang Yang, Guangyi Liu, Xiaokang Lin

Proceedings Volume 5626, Network Architectures, Management, and Applications II; (2005) https://doi.org/10.1117/12.570706
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

Open shortest path first (OSPF) is the most widely used routing protocol in today’s IP networks, and its excellent performance has been proved in wired environments. However, when it is executed under bad channel conditions such as in wireless networks or areas with severe signal interference, links may flap frequently and some terrible problems will appear. This paper proposes a novel algorithm called OSPF link flap damping algorithm (OLFDA). The objective of OLFDA is to reduce the events of link state advertisement (LSA) update and damp the link flap with the precondition that the overall network performance is satisfying. To accomplish this, we can define criteria to identify and dynamically suppress the poorly behaved links. Information of the suppressed links won’t be advertised in OSPF domain and used in calculation of the routing tables. In addition, we can control the maximal number of links suppressed simultaneously by a router to ensure the network connectivity. OLFDA are simulated in many scenarios, and the results indicate that the algorithm has an excellent performance.

Citation Download Citation

Yang Yang, Guangyi Liu, and Xiaokang Lin "A novel algorithm for OSPF link flap damping", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); https://doi.org/10.1117/12.570706

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