Anders Mykkeltveit

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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)
Today's backbone communication networks serve a wide range of services with different availability requirements. Each customer has a contract, denoted a Service Level Agreement (SLA) which specifies the availability requirement over the contract period. In the literature, different provisioning strategies to establish connection arrangements capable of(More)
The paper advocates that in some communication service providing settings, it is more appropriate to focus on the continuity of a connection as the prime reliability attribute for defining requirements and establishing Service Level Agreements, rather than the traditionally used availability. The justification for this approach and types of services where(More)
This paper describes the implementation of a distributed route management system called the CE-ant algorithm. Technology (NTNU), and results from simulations are promising. The algorithm has, however, never been implemented and tested in a real network carrying real data traffic. The pioneering implementation presented in this paper is based on two main(More)
The current trend is that the traffic from all services and users is carried by the same backbone network, irrespective of inherent or peculiar quality of service (QoS) requirements. This is also the case for dependability requirements like availability. To provide a service acceptable for users and services with high availability requirements, protection(More)
In the coming next generation network, the introduction of new services with different quality of service (QoS) requirements combined with cost conscious customers who make cost/utility trade-offs, yields a need for the network operators to be able to offer different levels of guaranteed availability. Protection techniques are used to provide alternative(More)
The Internet has traditionally provided an undefined level of availability based on a best-effort restoration scheme, while the telecommunication networks have provided a somewhat higher level, primarily achieved by dedicated protection. In the coming next generation network, the introduction of new services that have different quality of service (QoS)(More)
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