E2E-OAM in convergent Sub-wavelength-MPLS environments

This paper presents an End-to-End (E2E) Operations, Administration, and Maintenance (OAM) architecture for Telco networks including a Sub-wavelength domain. It addresses two main issues: compatibility between MPLS networks and different Sub-wavelength technologies, and scalability of the OAM flows across the whole network. The case for OPST Sub-wavelength technology in the data plane has been studied extensively, however this is the first study on a methodology to scale the number of OAM flows in an E2E scenario combing both subwavelength and MPLS switching domains. Finally the inter-carrier issue in E2E OAM is also explored.