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ABSTFWCT WDM in multilayer transport networks raises many questions regarding the coordination of the individual network layers. Especially in the area of network survivability, much can be gained by a better alignment of the healing actions taken by different network layers in case of outages. Survivability issues encountered in a multi-layer environment(More)
  • A. Jajszczyk
  • 2004
The paper gives an overview of the automatically switched optical network (ASON), concentrating on its control plane. Drivers for automatically switched optical networks are briefly presented. The ASON architecture, based on transport, control, and management planes, is discussed. Types of connections supported by ASON are described, including permanent,(More)
A reliable control plane plays a crucial role in creating high-level services in the next-generation transport network based on the generalized multiprotocol label switching (GMPLS) or automatically switched optical networks (ASON) model. Approaches to control-plane survivability, based on protection, and restoration mechanisms, are examined. Procedures for(More)
rovisioning of resilient communication services is a significant aspect of network engineering. One important research issue, which has recently gained attention, is resilience differentiation. The challenge is to enable provision-ing of services with different resilience characteristics such as the availability, continuity and duration of downtimes in the(More)
– In this paper a new concept called Quality of Resilience (QoR) is presented, which is based on the separation of Quality of Service (QoS) parameters into short-term quality factors, called availability parameters, and long-term quality parameters called QoR parameters. After dividing the time into intervals with length ∆t, for each such an interval the(More)