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Splitarchitecture: SDN for the carrier domain
KTH, Skolan för informations- och kommunikationsteknik (ICT), Kommunikationssystem, CoS, Network Systems Laboratory (NS Lab).
Vise andre og tillknytning
2014 (engelsk)Inngår i: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 52, nr 10, s. 146-152, artikkel-id 6917416Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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 carriergrade 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.

sted, utgiver, år, opplag, sider
2014. Vol. 52, nr 10, s. 146-152, artikkel-id 6917416
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-161501DOI: 10.1109/MCOM.2014.6917416ISI: 000346036300022Scopus ID: 2-s2.0-84907920703OAI: oai:DiVA.org:kth-161501DiVA, id: diva2:794864
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 258457
Merknad

QC 20150313

Tilgjengelig fra: 2015-03-13 Laget: 2015-03-12 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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Totalt: 246 treff
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