Conference paper Open Access

Hierarchical and recursive NFV service platform for end-to-end network service orchestration across multiple NFVI domains

Muñoz, Raül; Vilalta, Ricard; Casellas, Ramon; Martínez, Ricardo; Vicens, Felipe; Martrat, Josep; López, Víctor; López, Diego

The ETSI network function virtualisation (NFV) management and orchestration (MANO) architectural framework defines an NFV service platform composed of an NFV orchestrator and virtualised network function (VNFs) managers that are responsible to provide NFV network services. Network services can be defined as the joint instantiation of VNFs and the provisioning of required network connections between the different VNFs to jointly realise a more complex function (e.g. service function chaining). In general, it is assumed that a single service platform is governing the whole NFV infrastructure (NFVI) domain from the edge to the core of the network, composed of multiple edge computing and core DCs interconnected by heterogeneous optical access, metro and core transport networks. However, network operators will fragment their transport networks and DCs into multiple NFVI domains for scalability, administrative, or security issues. Each NFVI domain can be provided by different vendors relying on their own NFV service platforms or leveraging open source solutions such as SONATA, OSM, or ONAP. In this paper, we propose a hierarchical and recursive network service orchestration architecture to compose end-to-end network services by aggregating network services provided by per-domain NFV service platforms together with VNFs.

Grant numbers : DESTELLO - Dynamic flexible orchestration of data centers and programmable elastic optical networks and systems ( TEC2015-69256-R). © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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