24,217 research outputs found
Analysis of end-to-end multi-domain management and orchestration frameworks for software defined infrastructures: An architectural survey
Over the last couple of years, industry operators' associations issued requirements towards an end-to-end management and orchestration plane for 5G networks. Consequently, standard organisations started their activities in this domain. This article provides an analysis and an architectural survey of these initiatives and of the main requirements, proposes descriptions for the key concepts of domain, resource and service slicing, end-to-end orchestration and a reference architecture for the end-to-end orchestration plane. Then, a set of currently available or under development domain orchestration frameworks are mapped to this reference architecture. These frameworks, meant to provide coordination and automated management of cloud and networking resources, network functions and services, fulfil multi-domain (i.e. multi-technology and multi-operator) orchestration requirements, thus enabling the realisation of an end-to-end orchestration plane. Finally, based on the analysis of existing single-domain and multi-domain orchestration components and requirements, this paper presents a functional architecture for the end-to-end management and orchestration plane, paving the way to its full realisatio
SONATA: Service Programming and Orchestration for Virtualized Software Networks
In conventional large-scale networks, creation and management of network
services are costly and complex tasks that often consume a lot of resources,
including time and manpower. Network softwarization and network function
virtualization have been introduced to tackle these problems. They replace the
hardware-based network service components and network control mechanisms with
software components running on general-purpose hardware, aiming at decreasing
costs and complexity of implementing new services, maintaining the implemented
services, and managing available resources in service provisioning platforms
and underlying infrastructures. To experience the full potential of these
approaches, innovative development support tools and service provisioning
environments are needed. To answer these needs, we introduce the SONATA
architecture, a service programming, orchestration, and management framework.
We present a development toolchain for virtualized network services, fully
integrated with a service platform and orchestration system. We motivate the
modular and flexible architecture of our system and discuss its main components
and features, such as function- and service-specific managers that allow fine-
grained service management, slicing support to facilitate multi-tenancy,
recursiveness for improved scalability, and full-featured DevOps support
Analysis of end-to-end multi-domain management and orchestration frameworks for software defined infrastructures: an architectural survey
Over the last couple of years, industry operators' associations issued requirements towards an end-to-end management and orchestration plane for 5G networks. Consequently, standard organisations started their activities in this domain. This article provides an analysis and an architectural survey of these initiatives and of the main requirements, proposes descriptions for the key concepts of domain, resource and service slicing, end-to-end orchestration and a reference architecture for the end-to-end orchestration plane. Then, a set of currently available or under development domain orchestration frameworks are mapped to this reference architecture. These frameworks, meant to provide coordination and automated management of cloud and networking resources, network functions and services, fulfil multi-domain (i.e. multi-technology and multi-operator) orchestration requirements, thus enabling the realisation of an end-to-end orchestration plane. Finally, based on the analysis of existing single-domain and multi-domain orchestration components and requirements, this paper presents a functional architecture for the end-to-end management and orchestration plane, paving the way to its full realisation.This work was partially supported by the ICT14 5GExchange (5GEx) innovation project (grant agreement no.671636) co-funded by the European Union under the Horizon 2020 EU Framework Programme.Publicad
Investigating the impact of organised technology-driven orchestration on teaching
Orchestration of learning involves the real-time management of activities performed by educators in learning environments, with a particular focus on the effective use of technology. While different educational settings present unique problems, the common challenges have been noted to primarily be as a result of multiple heterogeneous activities and their associated intrinsic and extrinsic constraints. In addition to these challenges, this thesis argues that the complexities of orchestration are further amplified due to the ad hoc nature of the approaches and techniques used to orchestrate learning activities. The thesis proposes a streamlined approach to technology-driven orchestration of learning, in order to address these challenges and complexities. Specifically, the thesis proposes an organised approach that focuses on three core aspects of orchestration: activity management, resource management and sequencing of learning activities. Orchestration was comprehensively explored in order to identify the core aspects essential for streamlining technology-driven orchestration. Proof-of-concept orchestration toolkits, based on the proposed orchestration approach, were implemented and evaluated in order to assess the feasibility of the approach, its effectiveness and its potential impact on the teaching experience. Comparative analysis and guided orchestration controlled studies were conducted to compare the effectiveness of ad hoc orchestration with streamlined orchestration and to measure the orchestration load, respectively. In addition, a case study of a course that employed a flipped classroom strategy was conducted to assess the feasibility of the proposed approach. The feasibility was further assessed by integrating a workflow, based on the proposed approach, that facilitates the sharing of reusable orchestration packages. The results from the studies suggest that the streamlined approach is more effective when compared to ad hoc orchestration and has a potential to provide a positive user experience. The results also indicate that the approach imposes acceptable orchestration load during scripting of learning activities. Case studies conducted in authentic educational settings suggest that the approach is feasible, and potentially applicable to useful practical usage scenarios. The long-term implications are that streamlining of technology-driven orchestration could potentially improve the effectiveness of educators when orchestrating learning activities
An Approach to Log Management: Prototyping a Design of Agent for Log Harvesting
This paper describes a work in progress implementing a solution for
harvesting and transporting information logs from network devices in a
e-science environment. The system is composed for servers, agents, active
devices and a transporting protocol. This document describes the state of
development of agents. Agents capture logs from devices, normalize, reduce and
cataloged them by using metadata. Once all these processes are done, they
transmit the cataloged data by using Transportation Protocol to a warehouse
server. Also an agent use orchestration parameters to transmit modified logs to
a data warehouse server. These parameters can be received from orchestration
applications such as Taverna. The operation of the agents and the communication
protocol solve some of the deficiencies of traditional logs management
protocols. Finally, we show some test realized over the new prototype
MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP Environments
Virtualized network services consisting of multiple individual network
functions are already today deployed across multiple sites, so called multi-PoP
(points of presence) environ- ments. This allows to improve service performance
by optimizing its placement in the network. But prototyping and testing of
these complex distributed software systems becomes extremely challenging. The
reason is that not only the network service as such has to be tested but also
its integration with management and orchestration systems. Existing solutions,
like simulators, basic network emulators, or local cloud testbeds, do not
support all aspects of these tasks. To this end, we introduce MeDICINE, a novel
NFV prototyping platform that is able to execute production-ready network func-
tions, provided as software containers, in an emulated multi-PoP environment.
These network functions can be controlled by any third-party management and
orchestration system that connects to our platform through standard interfaces.
Based on this, a developer can use our platform to prototype and test complex
network services in a realistic environment running on his laptop.Comment: 6 pages, pre-prin
CloudCAMP: Automating Cloud Services Deployment and Management
Users of cloud platforms often must expend significant manual efforts in the
deployment and orchestration of their services on cloud platforms due primarily
to having to deal with the high variabilities in the configuration options for
virtualized environment setup and meeting the software dependencies for each
service. Despite the emergence of many DevOps cloud automation and
orchestration tools, users must still rely on specifying low-level scripting
details for service deployment and management using Infrastructure-as-Code
(IAC). Using these tools required domain expertise along with a steep learning
curve. To address these challenges in a tool-and-technology agnostic manner,
which helps promote interoperability and portability of services hosted across
cloud platforms, we present initial ideas on a GUI based cloud automation and
orchestration framework called CloudCAMP. It incorporates domain-specific
modeling so that the specifications and dependencies imposed by the cloud
platform and application architecture can be specified at an intuitive, higher
level of abstraction without the need for domain expertise using Model-Driven
Engineering(MDE) paradigm. CloudCAMP transforms the partial specifications into
deployable Infrastructure-as-Code (IAC) using the Transformational-Generative
paradigm and by leveraging an extensible and reusable knowledge base. The
auto-generated IAC can be handled by existing tools to provision the services
components automatically. We validate our approach quantitatively by showing a
comparative study of savings in manual and scripting efforts versus using
CloudCAMP
Deploying elastic routing capability in an SDN/NFV-enabled environment
SDN and NFV are two paradigms that introduce unseen flexibility in telecom networks. Where previously telecom services were provided by dedicated hardware and associated (vendor-specific) protocols, SDN enables to control telecom networks through specialized software running on controllers. NFV enables highly optimized packet-processing network functions to run on generic/multi-purpose hardware such as x86 servers. Although the possibilities of SDN and NFV are well-known, concrete control and orchestration architectures are still under design and few prototype validations are available. In this demo we demonstrate the dynamic up-and downscaling of an elastic router supporting NFV-based network management, for example needed in a VPN service. The framework which enables this elasticity is the UNIFY ESCAPE environment, which is a PoC following an ETSI NFV MANO-conform architecture. This demo is one of the first to demonstrate a fully closed control loop for scaling NFs in an SDN/NFV control and orchestration architecture
Admission and Congestion Control for 5G Network Slicing
Network Slicing has been widely accepted as essential feature of future 5th
Generation (5G) mobile communication networks. Accounting the potentially dense
demand of network slices as a cloud service and the limited resource of mobile
network operators (MNOs), an efficient inter-slice management and orchestration
plays a key role in 5G networks. This calls advanced solutions for slice
admission and congestion control. This paper proposes a novel approach of
inter-slice control that well copes with existing pre-standardized 5G
architecturesComment: Submitted to 2018 IEEE Conference on Standards for Communications and
Networking (CSCN
5G Network Management, Orchestration, and Architecture: A Practical Study of the MonB5G project
The cellular device explosion in the past few decades has created many
different opportunities for development for future generations. The 5G network
offers a greater speed in the transmissions, a lower latency, and therefore
greater capacity for remote execution. The benefits of AI for 5G network
slicing orchestration and management will be discussed in this survey paper. We
will study these topics in light of the EU-funded MonB5G project that works
towards providing zero-touch management and orchestration in the support of
network slicing at massive scales for 5G LTE and beyond
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