OSA's Digital Library

Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 5 — May. 1, 2011
  • pp: 465–474

Preserving Confidentiality in PCE-based Multi-domain Networks

Francesco Paolucci, Molka Gharbaoui, Alessio Giorgetti, Filippo Cugini, Barbara Martini, Luca Valcarenghi, and Piero Castoldi  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 3, Issue 5, pp. 465-474 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (360 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The path computation element (PCE) architecture has been proposed to effectively enable multi-domain traffic engineering (TE) in generalized multiprotocol label switching (GMPLS) networks while providing an adequate level of confidentiality among domains. However, a malicious utilization of the procedures defined within the PCE architecture might affect the confidentiality of network domain information in a multi-domain multi-carrier network scenario. This paper discusses the critical issues of the PCE architecture in terms of confidentiality. A two-step authorization scheme, named the behavior-based PCE authorization policy (BPAP), is proposed. The BPAP includes a novel add-on PCE component and a central authorization policy server to protect against confidentiality breaking. The scheme is based on the PCE protocol (PCEP) client behavior analysis and includes attack pattern detection procedures and possible partial information filtering of the reply message. The applicability of the BPAP scheme is validated in wavelength switched optical networks (WSONs) through simulations focusing on the exchange of a restricted set of available resources. Finally, a BPAP implementation is experimentally evaluated, showing the efficiency of the two-step scheme in terms of scalability, capability to limit the discovery of critical information, and reactivity to confidential attacks.

© 2011 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4258) Fiber optics and optical communications : Networks, network topology

ToC Category:
Research Papers

Original Manuscript: December 22, 2010
Revised Manuscript: March 16, 2011
Manuscript Accepted: April 8, 2011
Published: April 29, 2011

Francesco Paolucci, Molka Gharbaoui, Alessio Giorgetti, Filippo Cugini, Barbara Martini, Luca Valcarenghi, and Piero Castoldi, "Preserving Confidentiality in PCE-based Multi-domain Networks," J. Opt. Commun. Netw. 3, 465-474 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. Farrel and I. Bryskin, GMPLS: Architecture and Applications, Morgan Kaufmann Publishers Inc., 2005.
  2. Y. Lee, G. Bernstein, J. Martensson, T. Takeda, and T. Tsuritani, "PCEP Requirements for WSON Routing and Wavelength Assignment," Draft-ietf-pce-wson-routing-wavelength-03, IETF, Nov. 2010.
  3. A. Farrel, A. J. Bruce, and J. P. Vasseur, "A path computation element (PCE)-based architecture," IETF RFC 4655, Aug. 2006.
  4. R. Casellas, R. Martinez, R. Munoz, and S. Gunreben, "Enhanced backwards recursive path computation for multi-area wavelength switched optical networks under wavelength continuity constraint," J. Opt. Commun. Netw. 1, (2), A180‒A193 (2009). [CrossRef]
  5. S. Dasgupta, J. de Oliveira, and J.-P. Vasseur, "Path- computation-element-based architecture for interdomain MPLS/GMPLS traffic engineering: overview and performance," IEEE Network 21, (4), 38‒45 (2007). [CrossRef]
  6. R. Bradford, J.-P. Vasseur, and A. Farrel, "Preserving topology confidentiality in inter-domain path computation using a key-based mechanism," IETF RFC 5520, Apr. 2009.
  7. F. Paolucci, F. Cugini, B. Martini, M. Gharbaoui, L. Valcarenghi, and P. Castoldi, "Preserving confidentiality in PCEP-based inter-domain path computation," Proc. ECOC’10, Sept. 2010.
  8. J. Vasseur and J. Le Roux, "Path computation element (PCE) communication protocol (PCEP)," IETF RFC 5440, Mar. 2009.
  9. N. Bithar, R. Zhang, and K. Kumaki, "Inter-AS requirements for the path computation element communication protocol (PCECP)," IETF RFC 5376, Nov. 2008.
  10. J. Vasseur, R. Zhang, N. Bitar, and J. Le Roux, "A backward-recursive PCE-based computation (BRPC) procedure to compute shortest constrained inter-domain traffic engineering label switched paths," IETF RFC 5441, Apr. 2009.
  11. R. Casellas, R. Martinez, R. Munoz, T. Tsuritani, L. Liu, and M. Tsurusawa, "Lab-trial of multi-domain lightpath provisioning with PCE path computation combining BRPC and path-key topology confidentiality in GMPLS translucent WSON networks," Proc. ECOC’10, Sept. 2010.
  12. E. Toktar, E. Jamhour, and E. Maziero, "RSVP policy control using XACML," Proc. POLICY’04, June 2004.
  13. L. Fang, C. Wang, and G. Ma, "A framework for network security situation awareness based on knowledge discovery," Proc. ICCET’10, Apr. 2010.
  14. N. Nordbotten, "XML and web services security standards," IEEE Commun. Surv. Tutorials 11, (3), 4‒21 (2009). [CrossRef]
  15. Y. Demchenko, M. Cristea, and C. de Laat, "XACML policy profile for multidomain network resource provisioning and supporting authorisation infrastructure," Proc. POLICY’09, July 2009.
  16. S. Polito, D. Gebbers, M. Chamania, and A. Jukan, "A new NSIS application for LSP setup with security features," Proc. ICC’10, May 2010.
  17. S. Polito, M. Chamania, and A. Jukan, "Extending the inter-domain PCE framework for authentication and authorization in GMPLS networks," Proc. ICC’09, June 2009.
  18. A. Giorgetti, N. Sambo, I. Cerutti, and P. Castoldi, "Impact of link-state advertisement in GMPLS-based wavelength-routed networks," Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf., 2008, JWA98.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited