Splitarchitecture: SDN for the carrier domain
| Autor: | Hagen Woesner, Pontus Skoldstrom, Dimitri Staessens, Wolfgang John, Mario Kind, András Kern |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
FOS: Computer and information sciences
business.product_category Computer Networks and Communications Computer science computer.internet_protocol Distributed computing 050801 communication & media studies Multiprotocol Label Switching 02 engineering and technology Communications system computer.software_genre Computer Science - Networking and Internet Architecture 0508 media and communications 0202 electrical engineering electronic engineering information engineering Forwarding plane Internet access Electrical and Electronic Engineering Routing control plane Networking and Internet Architecture (cs.NI) Network architecture business.industry 05 social sciences Communication Systems 020206 networking & telecommunications Virtualization Computer Science Applications High availability Scalability Layering business computer Kommunikationssystem Computer network |
| Popis: | The concept of SDN has emerged as a way to address numerous challenges with traditional network architectures by decoupling network control and forwarding. So far, the use cases for SDN mainly targeted data-center applications. This article considers SDN for network carriers, facing operation of large-scale networks with millions of customers, multiple technologies, and high availability demands. With specific carrier-grade features such as scalability, reliability, flexibility, modularity, and virtualization in mind, the SPARC EU project has developed the SPARC SplitArchitecture concept. The SplitArchitecture control plane allows hierarchical layering of several control plane layers which can be flexibly mapped to data plane layers. Between control layers open interfaces are used. Furthermore, SplitArchitecture proposes an additional split of forwarding and processing functions in data path elements, enabling switch based OAM functionality and handling of tunneling techniques. The SplitArchitecture concept is evaluated in a prototype demonstrating an SDN version of BRAS: the floating BRAS. The floating BRAS allows creation of residential Internet access services with dynamically managed BRAS instances. The demo is based on a controller enabling protected MPLS transport connections spanning SDN-controlled aggregation and IP/MPLS-based core domains. The prototype showcases how SplitArchitecture enables virtualization of service nodes in an SDN-controlled network, leading to increased flexibility in configuration and placement of service creation functions. Overall, the results show that it is technically and economically beneficial to apply SDN, and specifically the SplitArchitecture concept, to the carrier domain. Pre-print of article published in IEEE Communications Magazine vol. 52, no. 10, pp. 146-152, October 2014 |
| Databáze: | OpenAIRE |
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