SDN based Provisioning Orchestration of OpenFlow/GMPLS Flexi-grid Networks with a Stateful Hierarchical PCE

Casellas, Ramon; Muñoz, Raül; Martínez, Ricardo; Vilalta, Ricard; Liu, L.; Tsuritani, Takehiro; Morita, Itsuro; López, Vı́ctor; Dios, Óscar González de; Fernández-Palacios, Juan Pedro

doi:10.1364/ofc.2014.th3i.2

Cited by 29 publications

(13 citation statements)

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“…This hierarchical approach has been proposed before in [8] where multiple OpenFlow-enabled PCEs are orchestrated by a parent-PCE to provision E2E connections. In [9], the ABNO architecture is used in a international Testbed to orchestrate E2E connectivity services across several optical network transport technologies (Optical Packet Switching -OPS, Elastic Optical Networks -EON [10] and WSON) controlled by dierent SDN controller distributions.…”

Section: Sdn Orchestrationmentioning

confidence: 99%

SDN orchestration architectures and their integration with Cloud Computing applications

Mayoral

Vilalta

Muñoz

et al. 2017

Optical Switching and Networking

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Emerging cloud-based applications, running in geographically distributed data centers (DCs), generate new dynamic trac patterns which claim for a more ecient management of the trac ows. Geographically distributed DCs interconnection requires automatic and more dynamic provisioning and deletion of end-toend (E2E) connectivity services, through heterogeneous network domains. Each network domain may use a dierent data transport technology but also a dierent control/management system. The fast development of Software Dened Networking (SDN) and the interworking with current control plane technologies such as Generalized Multi-protocol Label Switching (GMPLS), demand orchestration over the heterogeneous control instances to provide seamless E2E connectivity services to external applications (i.e. cloud computing applications).In this work, we present dierent orchestration architectures based on the SDN principles which use the Path Computation Element (PCE) as a fundamental component. In particular, a single SDN controller orchestration approach is compared with an orchestration architecture based on the Application Based Network Operations (ABNO) dened within the International Engineering Task Force (IETF), in order to nd the potential benets and drawbacks of both architectures. Finally, the SDN IT and Network Orchestration (SINO) platform which integrates the management of Cloud Computing infrastructure with the network orchestration, it is used to validate both architectures by evaluating their performance providing two inter-DC connectivity services: E2E connectivity and Virtual Machine (VM) migration.

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Section: Sdn Orchestrationmentioning

confidence: 99%

SDN orchestration architectures and their integration with Cloud Computing applications

Mayoral

Vilalta

Muñoz

et al. 2017

Optical Switching and Networking

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“…This virtualization of resources and presenting some control of them directly to users forms the basis of research into transport-software defined networks [30]. This is a rich and active area of research as well as standardization activity, with significant progress being made [31], [32].…”

Section: Managementmentioning

confidence: 99%

Core Networks in the Flexgrid Era

Lord

Wright

Mitra

2015

J. Lightwave Technol.

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“…In this setting, the parent PCE orchestrates the provisioning of services with generalized identifiers and each child PCE acts as a proxy for each domain, either integrated with an OpenFlow controller, or delegating to an underlying GMPLS/PCE control plane. PCEP is used for provisioning, rerouting and reporting [23]. The main procedure to set up an end-to-end connection is as follows: After an initial north bound interface request of the parent PCE (pPCE)(1), the pPCE requests the virtual shortest path trees (VSPT) from the source and destination nodes to their corresponding border nodes (2) and uses the VPSTs and virtual links to perform domain selection (3) and, in turn, requests the segment expansion: each child PCE (cPCE) performs Routing and Spectrum Assignment (RSA) and returns usable path and frequency slots (4).…”

Section: Hierarchical Active Stateful Pcementioning

confidence: 99%

“…14. Block diagram of the SDN based orchestration of OF and GMPLS domains based on a hierarchical PCE with active and OpenFlow extensions.It corresponds to the generic hierarchical model where the PCEP protocol conveys path computation, topology management and instantiation functions[23].…”

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confidence: 99%

Overarching Control of Flexi Grid Optical Networks: Interworking of GMPLS and OpenFlow Domains

Casellas

Muñoz

Martínez

et al. 2015

J. Lightwave Technol.

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Optical Transport Networks provide transport, multiplexing, routing, management, supervision and survivability of optical channels. Within a flexible Dense Wavelength Division Multiplexing (DWDM) grid, the optical spectrum can be allocated in multiples of a width granularity, depending on the client signal rate and modulation format. A control plane (CP) can be used for efficient and dynamic provisioning and recovery of flexi-grid connections.Two main CP architectures coexist, with common functions like addressing, automatic topology discovery, network abstraction, path computation and connection provisioning: a distributed Generalized Multi Protocol Label Switching (GMPLS) control plane (with optional Path Computation Element, PCE path computation and instantiation/modification) and a control plane based on Software Defined Networking (SDN), with a logically centralized controller and an open protocol, such as the OpenFlow protocol (OF/OFP). Both architectures have their own strengths and weaknesses, and are being extended to address the new requirements associated to the aforementioned emerging optical technologies, such as flexible spectrum allocation, efficient co-routed connection setup and configuration of related optical parameters.However, new use cases such as remote data center interconnection highlight the need for multi-domain service provisioning, and heterogeneous CP interworking, potentially requiring an overarching control. Different alternatives, with varying degrees of integration and flexibility, are available: straightforward approaches characterized by the adaptation of one control model to the other or more advanced interworking requiring the definition of common models (e.g. a subset of attributes for network elements) and of coordination and orchestration functions. This paper discusses the main relevant interworking architectures and presents a selected set of use cases and proof-of-concepts.

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SDN based Provisioning Orchestration of OpenFlow/GMPLS Flexi-grid Networks with a Stateful Hierarchical PCE

Abstract: We report the experimental testbed evaluation of connectivity provisioning in which OpenFlow and GMPLS control planes interwork by means of an orchestrating stateful PCE. The hierarchical nature of the PCE allows seamless multi-domain operation.

Cited by 29 publications

References 0 publications

SDN orchestration architectures and their integration with Cloud Computing applications

SDN orchestration architectures and their integration with Cloud Computing applications

Core Networks in the Flexgrid Era

Overarching Control of Flexi Grid Optical Networks: Interworking of GMPLS and OpenFlow Domains

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