Introduction to Algorithms
Policy-Based Admission Control in GMPLS Optical Networks
BROADNETS '04 Proceedings of the First International Conference on Broadband Networks
A traffic engineering system for multilayer networks based on the GMPLS paradigm
IEEE Network: The Magazine of Global Internetworking
A Service Oriented Architecture-based Approach for Interdomain Optical Network Services
Journal of Network and Systems Management
Policy-Based Grooming in Optical Networks
Journal of Network and Systems Management
Optical Switching and Networking
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In this paper we present a policy-based architecture for aggregating (grooming) IP/MPLS flows (packet-based LSPs) within lightpaths taking into account the possibility of having to cope with further transport faults. The defined policies try to minimize the negative impact when a failure is detected in the optical transport network. Such policies deal with 1+1, 1:1 and 1:N schemes of protection. In our model, IP/MPLS flows are divided into High Priority (HP) and Low Priority (LP) traffics. The architecture is composed of an Admission Control responsible for receiving the requisitions from the IP/MPLS network and forward them to the Policy Manager which in turn is responsible for applying the policies. The architecture also has a Fault Manager responsible for accounting the failures and a Resource Manager responsible for managing the lightpaths. Our approach has been implemented to validate the policies and the results showed that the defined policies decrease the number of affected LSPs when a given lightpath fails.