Dear Chairs,
NAME OF I-D:
http://www.ietf.org/internet-drafts/draft-guo-optical-mesh-ring-01.txt
SUMMARY
We propose a hybrid mesh-ring optical network architecture of mixing rings together with meshes, either by embedding rings into meshes or by connecting rings with meshes. A hybrid mesh-ring network provides both connection flexibility and robust failure protection. After discussing the unique architecture of hybrid mesh-ring networks, this draft focuses on defining new attributes and methods for mesh-ring's topology discovery and routing information distribution.
RELATED DOCUMENTS
[GHANI] N. Ghani, J. Fu, D. Guo, X. Liu, Z. Zhang, "Architectural Framework for Automatic Protection Provisioning In Dynamic Optical Rings", draft-ghani-optical-rings-01.txt, December 2000.
[DP] D. Papadimitriou Optical Rings and Hybrid Mesh-Ring Optical Networks , draft-papadimitriou-optical-rings-00.txt
[STRANDYUE] J. Strand and Y. Xue, "Routing for Optical Networks With Multiple Routing Domains", OIF 2001.046, Optical Internetworking Forum, 2001.
[XUELAZER] Y. Xue and M. Lazer, "Carrier Optical Services Framework and Associated Requirements for UNI", oif2000.155, 2000.
WHERE DOES IT FIT IN THE PICTURE OF THE SUB-IP WORK
OPT (IP over optical)
WHY IS IT TARGETED AT THIS WG
This document introduces a new architectural framework for building IP-based optical networks. This contrasts to the popular notion of optical networks with mesh topology. It leverages on the optical rings' features on fault protection and recovery.
JUSTIFICATION
Given the large installed base of ring fiber-plants and the extensive experience operators have gained in operating SONET/SDH ring networks, rings will play a crucial role in the migration from existing TDM-based SONET/SDH architectures to more dynamic lightpath provisioning paradigms. To date, mesh-based frameworks have been introduced for IP-based optical networks. MPL(ambda)S/GMPLS framework for optical networks is largely based upon (optical) mesh routing concepts. Clearly, there is a strong need to formalize a more comprehensive architectural framework which combines optical rings and meshed-based architecture. Along these lines, we believe our draft is valuable for architectural framework of IP-based optical networks.
Dan Guo