Design of IP tunneling for OSPF network to reduce advertising delay

Abstract

Abstract: An IP tunneling design scheme to reduce advertising delay inopen shortest path first (OSPF) networks, in which the link load is requiredfor traffic maintenance, is proposed. A controller and nodes are consisted in anetwork. A node sends an OSPF traffic engineering (OSPF-TE) advertise-ment when either link load or topology is changed. The controller determinesand adjusts the routes in the network to avoid traffic congestion. Thecontroller may experience delay in receiving advertisements due to OSPFforwarding delay. Therefore, route adjustment may be delayed. In theproposed scheme, an IP tunneling technique is used instead of the OSPFmechanism.Keywords: network management, IP networks, open shortest path firsttraffic engineer (OSPF-TE), IP tunnelingClassification: Network Management/OperationReferences [1] E. Oki and A. Iwaki, “Load-balanced IP routing scheme based on shortest paths inhose model,” IEEE Trans. Commun., vol. 58, no. 7, pp. 2088–2096, Jul. 2010.DOI:10.1109/TCOMM.2010.07.090219[2] D. Katz et al., “Traffic Engineering (TE) Extensions to OSPF Version 2,” RFC3630, Sep. 2003.[3] H. M. Alnuweiri, L. Y. K. Wong, and T. Al-Khasib, “Performance of new link stateadvertisement mechanisms in routing protocols with traffic engineering exten-sions,” IEEE Commun. Mag., vol. 42, no. 5, pp. 151–162, 2004. DOI:10.1109/MCOM.2004.1299361[4] Y. Koizumi, T. Miyamura, S. Arakawa, E. Oki, K. Shiomoto, and M. Murata,“Adaptive virtual network topology control based on attractor selection,” IEEE/OSA J. Light. Tech., vol. 28, no. 11, pp. 1720–1731, Jun. 2010. DOI:10.1109/JLT.2010.2048412[5] Y. Lee et al., “Path Computation Element Communication Protocol (PCEP)requirements and protocol extensions in support of global concurrent optimization,”RFC 5557, Jul. 2009.[6] C. Perkins, “IP encapsulation within IP,” RFC 2003, Oct. 1996.[7] “What is propagation delay? (Ethernet Physical Layer)”, Ethernet FAQ, http://stason.org/TULARC/networking/lans-ethernet/3-11-What-is-propagation-delay-Ethernet-Physical-Layer.html, Oct. 21. 2010.