266828
doi
10.1364/JOCN.9.00A207
oai:zenodo.org:266828
user-eu
Vilalta, Ricard
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Martínez, Ricardo
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Muñoz, Raül
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
Highly-available SDN control of Flexi-grid Networks with Network Function Virtualization enabled replication
Casellas, Ramon
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Software Defined Networking (SDN)
Replication
High-availability
Flexi-grid networks control and management
Path Computation Element (PCE)
Network Function Virtualization (NFV)
<p>New trends and emerging requirements have driven the development of extensions to the path computation element (PCE) architecture beyond the computation of a set of constrained routes and associated resources between endpoints, given a network topology. Such extensions involve the use of a PCE for the control of network services, in which deploying a PCE as a centralized network controller facilitates the adoption of software-defined networking (SDN) principles while allowing a progressive migration of already existing deployments. A key requirement for the adoption of centralized control solutions is the ability to deploy a resilient, secure, dynamically configurable, adaptive, and highly available (virtualized) infrastructure supporting end-to-end services, including critical and vertical ones. Part of this infrastructure is the control plane functional elements (e.g., controllers), and the use of network function virtualization (NFV) is a enabler for the high availability of such elements while additionally reducing OPEX and CAPEX. NFV provides a feature-complete framework for the replication of software components that is a straightforward and commonly adopted approach to address the aforementioned requirement, but it implies the need for timely synchronization of databases between replicas. In this paper we present, implement, and validate an architecture for PCE and SDN control high availability, combining the virtualization of the control function by means of dynamic replication and the timely synchronization of their internal state using the PCEP and BGP-LS protocols. We experimentally validate the approach with a testbed, including a GMPLS/PCE control plane, and a replica management system implemented following the ETSI NFV framework, using the OpenStack cloud management software.</p>
Grant numbers : This work has been partially funded by the Spanish Ministry of Economy and Competitiveness
(MINECO) project DESTELLO (TEC2015-69256-R).
Zenodo
2017-02-01
info:eu-repo/semantics/article
756756
user-eu
award_title=5G-Crosshaul: The 5G Integrated fronthaul/backhaul; award_number=671598; award_identifiers_scheme=url; award_identifiers_identifier=https://cordis.europa.eu/projects/671598; funder_id=00k4n6c32; funder_name=European Commission;
1579542152.708284
851236
md5:f086465c5b2956c17e5f530b438cda9c
https://zenodo.org/records/266828/files/Highly-available SDN control of Flexi-grid.pdf
public
Optical Communications and Networking
9
2
A207-A215
2017-02-01