Policy Based Management Research Papers (original) (raw)

The Session Initiation Protocol (SIP) is a text based signaling protocol, which has been adopted in Next Generation Network (NGN) for controlling multimedia communications. The present paper addresses issues related to Call Admission... more

The Session Initiation Protocol (SIP) is a text based signaling protocol, which has been adopted in Next Generation Network (NGN) for controlling multimedia communications. The present paper addresses issues related to Call Admission Control (CAC) for a private network (A competitive cluster where proposed architecture blends various devices/components from several partners; Call Server (CS) from one partner and Session Border Controller (SBC) from another in the platform) accessing the rest of the world through various links. The standard SIP messages are used to share and distribute required information between different devices in the network. In this architecture, an efficient CAC function should take account of many factors, including user profile, call type and the state of the available access links. We propose to distribute the CAC function between the CS and SBC; the CS handles issues related to user profile and the SBC handles issues related to resource availability. The collaboration between CS and SBC is made possible by using the ”SIP Priority header” to share and exchange information during Call Setup. This mechanism helps in isolating the service, control and transfer planes from each other.

"Network management is becoming increasingly challenging with the relentless growth in network size, traffic volume, and the diversity in QoS requirements. Traditionally, the concept of predefined Service Level Agreements (SLAs) has been... more

"Network management is becoming increasingly challenging with the relentless growth in network size, traffic volume, and the diversity in QoS requirements. Traditionally, the concept of predefined Service Level Agreements (SLAs) has been utilized to establish QoS parameters. However, state-of-the-art technologies in this area are both proprietary and inflexible. To this end, Software Defined Networking (SDN) has the potential to make network management tasks flexible and scalable, and to provide an open platform to encourage innovation. In this paper, we present PolicyCop – an open, flexible, and vendor agnostic QoS policy management framework targeted towards OpenFlow based SDN. PolicyCop provides an interface for specifying QoS-based SLAs and enforces them using the OpenFlow API. It monitors the
network and autonomically readjusts network parameters to satisfy customer SLAs. We present experimental results to demonstrate PolicyCop’s effectiveness in ensuring throughput, latency, and reliability guarantees."

Customer eXperience is a blue print of customer requirements. In this era of heightened competition and volatile global economy, delivering services originating from diverse sources, without satisfying thorough customer experience... more

Customer eXperience is a blue print of customer requirements. In this era of heightened competition and volatile global economy, delivering services originating from diverse sources, without satisfying thorough customer experience practices may increase ...

In order to arrange heterogeneous simulation executions, it would be useful to have simulation tools that enable easy and fast creation of simulation sessions employing real-time software components beside simulation codes. Although there... more

In order to arrange heterogeneous simulation executions, it would be useful to have simulation tools that enable easy and fast creation of simulation sessions employing real-time software components beside simulation codes. Although there have been considerable amount of research activities in simulation community, the current simulation tools are not sufficiently capable to support such a cooperation between components working in

The Greek Academic network specified its Optical all-IP successor GRNET2. Various technical and political decisions are presented here from a critical point of view and a proposal has been made to design an all optical DWDM nationwide... more

The Greek Academic network specified its Optical all-IP successor GRNET2. Various technical and political decisions are presented here from a critical point of view and a proposal has been made to design an all optical DWDM nationwide core network interconnecting IP optical ...

A management policy evolves over time by addition, deletion and modifications of rules. Policies authored by different administrators may be merged to form the final system management policy. Since policies are used to govern the system... more

A management policy evolves over time by addition, deletion and modifications of rules. Policies authored by different administrators may be merged to form the final system management policy. Since policies are used to govern the system behavior, conflicts may arise in the set of policies and also may arise during the refinement process, between the high-level goals and the implementable policies. Moreover, policy conflict can result from propagation, action composition and other constraint policies, which cannot be detected by simply comparing authorization policies. Static and dynamic conflicts are considered as two classes of conflict which need to be understood and independently managed. Furthermore, the distinction between these two classed is important; as detecting and resolving of conflict can be computationally intensive, time consuming and hence, costly. However, a dynamic conflict is quite unpredictable, in that it may, or may not; proceed to a state of a realized conflict. In this paper we present static analyses to address the overlap cased when there are two or more policies are enforced simultaneously. Moreover, the paper provides temporal specification patterns to avoid each type of conflicts, and to ensure that policies are enforced correctly.

This paper describes a dynamic, scalable and extensible policy-based network management (PBNM) system that is fully integrated with a service provisioning architectures for active networks. The key result is network customisation... more

This paper describes a dynamic, scalable and extensible policy-based network management (PBNM) system that is fully integrated with a service provisioning architectures for active networks. The key result is network customisation according to the needs of the different service providers and its end users. Our component-based service provisioning architecture enables us to render service- and user-specific requirements, across single/multiple administrative domains, at deployment time and to dynamically map service components onto the network using the corresponding management policies. The architecture presented in this paper describes the approach undertaken by the IST-FAIN research project as well as the main issues that we encounter in developing and integrating the PBNM with the service provisioning mechanism.

Existing Business-to-Business (B2B) infrastructure is primarily focussed on the secure, reliable, and scaleable transfer of information between business partners. The time and effort taken to establish these B2B connections has meant that... more

Existing Business-to-Business (B2B) infrastructure is primarily focussed on the secure, reliable, and scaleable transfer of information between business partners. The time and effort taken to establish these B2B connections has meant that the resulting business relationships tend to be long-term and rigid in nature. More recently, however, the configurability of the value chain connecting business partners has been seen as a key to competitiveness. There is increasing pressure to establish more transient ad-hoc relationships whereby dynamic decisions can be made to, for instance, exchange one partner with a more competitive alternative. This dynamic business model introduces considerable complexity both in the need to deal with heterogeneous partner interfaces and the need to support dynamic decision-making. In this paper we explore how semantic web service technology can be combined with policy-based management to infuse adaptivity into existing B2B infrastructure. This adaptivity ...

This paper aims to describe a policy based management system for outsourced businesses. We describe a prototype which offers custom real-time and historical views over the performance of a hosted application and the ability to control the... more

This paper aims to describe a policy based management system for outsourced businesses. We describe a prototype which offers custom real-time and historical views over the performance of a hosted application and the ability to control the resources available to the application remotely and dynamically.

This paper presents a framework for context-driven policy-based QoS control and end-to-end resource management in converged next generation networks. The Converged Networks QoS Framework (CNQF) is being developed within the IU-ATC... more

This paper presents a framework for context-driven policy-based QoS control and end-to-end resource management in converged next generation networks. The Converged Networks QoS Framework (CNQF) is being developed within the IU-ATC project, and comprises distributed functional entities whose instances co-ordinate the converged network infrastructure to facilitate scalable and efficient end-to-end QoS management. The CNQF design leverages aspects of TISPAN, IETF