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Komolafe, O.; Sventek, J.S. (2007)
Publisher: IEEE
Languages: English
Types: Other
Subjects: QA75
GMPLS is viewed as an attractive intelligent control plane for different network technologies and graceful restart is a key technique in ensuring this control plane is resilient and able to recover adequately from faults. This paper analyses the graceful restart mechanism proposed for a key GMPLS protocol, RSVP-TE. A novel analytical model, which may be readily adapted to study other protocols, is developed. This model allows the efficacy of graceful restart to be evaluated in a number of scenarios. It is found that, unsurprisingly, increasing control message loss and increasing the number of data plane connections both increased the time to complete recovery. It was also discovered that a threshold exists beyond which a relatively small change in the control message loss probability causes a disproportionately large increase in the time to complete recovery. The interesting findings in this work suggest that the performance of graceful restart is worthy of further investigation, with emphasis being placed on exploring procedures to optimise the performance of graceful restart.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] D. Awduche, L. Berger, D. Gan, T. Li, V. Srinivasan, G. Swallow, “RSVPTE: Extensions to RSVP for LSP Tunnels', RFC 3209, Dec. 2001.
    • [2] L. Berger, D. Gan, G. Swallow, P. Pan, F. Tommasi, S. Molendini, ”RSVP Refresh Overhead Reduction Extensions” RFC 2961, April 2001.
    • [3] L. Berger (Ed.), ”Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Extensions” RFC 3473, Jan. 2003.
    • [4] A. Farrel, I. Bryskin, ”GMPLS Architecture and Applications”, Morgan Kaufmann, 2006.
    • [5] C. Grinstead, J. Snell, ”Introduction to Probability”, AMS, 1997.
    • [6] A. Jajszczyk and P. Rozycki, ”Recovery of the Control Plane after Failures in ASON/GMPLS Networks”, IEEE Network, pp.4-10, Jan/Feb 2006.
    • [7] Y. Kim, ”Requirements for the Resilience of Control Plane”, draft-kimccamp-cpr-reqts-01.txt, Oct. 2005.
    • [8] K. Kompella (Ed.), Y. Rekhter (Ed.), ”Routing Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS)” RFC 4202, Oct. 2005.
    • [9] K. Kompella (Ed.), Y. Rekhter (Ed.), ”OSPF Extensions in Support of Generalized Multi-Protocol Label Switching (GMPLS)” RFC 4203, Oct. 2005.
    • [10] J. Lang (Ed.) ”Link Management Protocol (LMP)” RFC 4204, Oct. 2005.
    • [11] G. Li, J. Yates, D. Wang, C. Kalmanek, ”Control Plane Design for Reliable Optical Networks”, IEEE Communications Magazine, pp. 90- 96, February 2002.
    • [12] E. Mannie (Ed.), ”Generalized Multi-Protocol Label Switching (GMPLS) Architecture”, RFC 3945, Oct. 2004.
    • [13] A. Neogi, T. Chiueh, P. Stirpe, ”Performance Analysis of an RSVPCapable Router”, IEEE Network, pp.56-63, Sept./Oct. 1999.
    • [14] A. Satyanarayana (Ed.), R. Rahman (Ed.), ”Extensions to GMPLS RSVP Graceful Restart”, draft-ietf-ccamp-rsvp-restart-ext-05.txt, Oct. 2005.
    • [15] A. Shaikh, A. Varma, L. Kalampoukas, R. Dube, ”Routing Stability in Congested Networks: Experimentation and Analysis”, Proc. ACM SIGCOMM 2000.
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