Abstract

As optical network deployment gains momentum, the efficient routing of optical connections across national and global networks assumes fundamental importance. When networks are partitioned into domains, for vendor interoperability, protocol scaling, or administrative ease, the nature and degree of topology and resource abstraction in routing protocols must be balanced by the need for intelligent information sharing to enable effective path computation. Here we focus on interdomain optical routing. We first highlight some major differences between optical circuit routing and Internet Protocol (IP) datagram routing and examine neighbor discovery and diverse routing in the optical case. We then develop a taxonomy of the information that can be shared between domains, and we discuss several applications of interdomain optical routing for the single-carrier case. Finally, we highlight some key issues for the multicarrier case.

© 2002 Optical Society of America

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References

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  1. P. Ashwood-Smith, A. Banerjee, L. Berger, G. Bernstein, J. Drake, Y. Fan, K. Kompella, E. Mannie, J. P. Lang, B. Rajagopalan, Y. Rekhter, D. Saha, V. Sharma, G. Swallow, and Z. Bo Tang, “Generalized MPLS—signaling functional description,” Work in Progress, draft-ietf-mpls-generalized-signaling-07.txt, November 2001, <a href= "http://search.ietf.org/internet-drafts/draft-ietf-mpls-generalized-signaling-07.txt">http://search.ietf.org/internet-drafts/draft-ietf-mpls-generalized-signaling-07.txt</a>.
  2. ITU-T Draft Recommendation G.7713, “Distributed call and connection management,” October 2001, ITU Telecommunication Standardization Sector, <a href= "http://www.itu.int/ITU-T/"> http://www.itu.int/ITU-T/</a>.
  3. ITU-T Recommendation G.805, "Generic functional architecture of transport networks,” March 2000, ITU Telecommunication Standardization Sector, <a href= "http://www.itu.int/ITU-T/">http://www.itu.int/ITU-T/</a>.
  4. G. Bernstein, E. Mannie, and V. Sharma, "Framework for MPLS-based control of optical SDH/SONET networks,” IEEE Netw. (July/August 2001), pp. 20–26.
  5. ITU-T Draft Recommendation G.7714, “Generalized automatic discovery techniques," October 2001, ITU Telecommunication Standardization Sector, <a/ href= "http://www.itu.int/ITU-T/">http://www.itu.int/ITU-T/</a>.
  6. J. P. Lang, K. Mitra, J. Drake, K. Kompella, Y. Rekhter, L. Berger, D. Saha, D. Basak, H. Sandick, A. Zinin, and B. Rajagopalan, “Link Management Protocol (LMP),” draft-ietf-ccamp-lmp-02.txt, Internet Draft, November 2001, <a href= "http://search.ietf.org/internet-drafts/draft-ietf-ccamp-lmp-02.txt">http://search.ietf.org/internet-drafts/draft-ietf-ccamp-lmp-02.txt</a>.
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IEEE Netw.

G. Bernstein, E. Mannie, and V. Sharma, "Framework for MPLS-based control of optical SDH/SONET networks,” IEEE Netw. (July/August 2001), pp. 20–26.

Other

ITU-T Draft Recommendation G.7714, “Generalized automatic discovery techniques," October 2001, ITU Telecommunication Standardization Sector, <a/ href= "http://www.itu.int/ITU-T/">http://www.itu.int/ITU-T/</a>.

J. P. Lang, K. Mitra, J. Drake, K. Kompella, Y. Rekhter, L. Berger, D. Saha, D. Basak, H. Sandick, A. Zinin, and B. Rajagopalan, “Link Management Protocol (LMP),” draft-ietf-ccamp-lmp-02.txt, Internet Draft, November 2001, <a href= "http://search.ietf.org/internet-drafts/draft-ietf-ccamp-lmp-02.txt">http://search.ietf.org/internet-drafts/draft-ietf-ccamp-lmp-02.txt</a>.

User Network Interface (UNI) 1.0 Signaling Specification, OIF2000.125.7, OIF, October 2001, Optical Internetworking Forum, <a href= "http://www.oiforum.com/">http://www.oiforum.com/<a/>.

R. Bhandari, Survivable Networks: Algorithms for Diverse Routing (Kluwer, Boston, Mass., 1999).

K. Kompella, Y. Rekhter, A. Banerjee, J. Drake, G. Bernstein, D. Fedyk, E. Mannie, D. Saha, and V. Sharma, “IS-IS extensions in support of generalized MPLS,” Work in Progress, draft-ietf-isis-gmpls-extensions-01.txt, November 2000, <a href= "http://search.ietf.org/internet-drafts/draft-ietf-isis-gmpls-extensions-07.txt">http://search.ietf.org/internet-drafts/draft-ietf-isis-gmpls-extensions-07.txt<a/>.

ANSI T1.105.01-1995, “Synchronous optical network (SONET) automatic protection switching,” American National Standards Institute, <a href= "http://www.ansi.org/">http://www.ansi.org/</a>.

Private Network-Network Interface Specification Version 1.0 (PNNI 1.0) af-pnni-0055.000, The ATM Forum, March 1996, The Asynchronous Transfer Mode Forum, <a href="http://www.atmforum.com/"> http://www.atmforum.com/</a>.

Y. Rekhter and P. Gross, "Application of the Border Gateway Protocol in the Internet,” RFC 1772, T. J. Watson Research Center, IBM Corporation, MCI, March 1995.

“Domain to Domain Routing Protocol (DDRP),” Work in Progress, OIF, December 2001, Optical Internetworking Forum, <a href= "http://www.oiforum.com/">http://www.oiforum.com/</a>.

P. Ashwood-Smith, A. Banerjee, L. Berger, G. Bernstein, J. Drake, Y. Fan, K. Kompella, E. Mannie, J. P. Lang, B. Rajagopalan, Y. Rekhter, D. Saha, V. Sharma, G. Swallow, and Z. Bo Tang, “Generalized MPLS—signaling functional description,” Work in Progress, draft-ietf-mpls-generalized-signaling-07.txt, November 2001, <a href= "http://search.ietf.org/internet-drafts/draft-ietf-mpls-generalized-signaling-07.txt">http://search.ietf.org/internet-drafts/draft-ietf-mpls-generalized-signaling-07.txt</a>.

ITU-T Draft Recommendation G.7713, “Distributed call and connection management,” October 2001, ITU Telecommunication Standardization Sector, <a href= "http://www.itu.int/ITU-T/"> http://www.itu.int/ITU-T/</a>.

ITU-T Recommendation G.805, "Generic functional architecture of transport networks,” March 2000, ITU Telecommunication Standardization Sector, <a href= "http://www.itu.int/ITU-T/">http://www.itu.int/ITU-T/</a>.

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