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)
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)
Flow List (PFL) in the congestion state. The mechanisms are discussed and performance evaluation results are presented.
—A complete system which ensures reliable transmission of streaming flows in Flow-Aware Networks (FAN) is presented and analyzed in the paper. A new congestion control mechanism, called RPAEF (Remove and Prioritize in access Active Elastic Flows), is described in details. It allows for fast acceptance of new streaming flows in the admission control (AC)… (More)
— In this paper it is shown that Flow-Aware Networks (FAN), although providing superior transmission quality, may force us to wait for the network resources. Such a situation is inconvenient for the realization of emergency VoIP connections. In order to overcome the presented problem, differentiated blocking along with the Static Router Configuration… (More)
The following flow-oriented architectures for quality of service assurance in IP networks are surveyed: Integrated Services, Connectionless Approach to QoS guarantees, Dynamic Packet State, Caspian Networks and Anagran, the Feedback and Distribution method, Flow-Based Differentiated Services, Flow-Aware Networking, the Flow-State-Aware transport, and… (More)
Two recovery techniques suited for the Next Generation Internet are studied: traditional protection rings (BLSRs) and a novel, preconfigured protection cycles (<i>p</i>-cycles) technique. Theoretical formulas describing the reliability function as well as Mean Time to Failure are derived. On the basis of our analysis, we show that <i>p</i>-cycles should not… (More)