Joan A . E. Garcia | Universitat Politecnica de Catalunya (original) (raw)

Papers by Joan A . E. Garcia

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2012

In this article we propose the GEYSERS project approach for Future Internet based on provisioning... more In this article we propose the GEYSERS project approach for Future Internet based on provisioning full infrastructures as a service by using IT and transport network resource virtualization. An overview of the project's architecture is provided that shows the layering scheme empowering the definition of Virtual Infrastructure service. The Logical Infrastructure Composition Layer in the architecture allows for operator-tailored planning of infrastructures, which also allows for a dynamic re-planning of the infrastructure depending on service needs. The rest of the article elaborates on the concept, characteristics and variants for modifying Virtual Infrastructures, as well as their implications.

Proceedings - 27th International Conference on Advanced Information Networking and Applications Workshops, WAINA 2013, 2013

Optical Networks, 2013

ABSTRACT During the last years, a trend has emerged at universities, large enterprises, governmen... more ABSTRACT During the last years, a trend has emerged at universities, large enterprises, government institutions, hospitals and public institutions towards acquiring and deploying their own dark-fibre or wavelength networks as opposed to purchasing bandwidth network services from the traditional operators. These institutions usually follow the condominium model to build and deploy their network. The parties get together in a joint effort to purchase the network equipment and deploy the dark fibre. Each institution gets a subset of the deployed fibre and part of the available ports, proportional to their initial investment. However, each institution manages their resources independently of the other organisations that share the physical substrate. Traditional control plane architectures cannot address the requirements of this type of networks, because they assume a single entity has administrative control of all the network elements in a physical domain. At the same time, a new set of bandwidth-intensive applications are emerging. e-Science applications, Grid applications and high-definition digital media streaming produce such a big amount of data that often justifies dedicating a network to a single application. In order to efficiently manage the resources, these applications must be able to configure the network in the way it better suits their needs. In response to these requirements, the user-controlled light paths (UCLP) concept, described in Sect. 2, allows a network to be partitioned in several independent management domains and exposes the network resources belonging to each partition as software objects or services under the control of different users. The UCLP results have evolved into Argia (Sect. 3), which is an effort towards creating a commercial product that can be deployed in production optical networks. UCLP and related works are the precursors of infrastructure as a service (IaaS) applied to networks and are changing the way network pieces are being acquired. For making the UCLP concept flexible to any kind of resources, the IaaS Framework (Sect. 4) addresses the need to have a unified framework using enterprise-grade tools and libraries in which new resources can quickly and easily be created. Finally, Sect. 5 introduces the multidomain provisioning systems and the Harmony implementation, an inter-domain broker solution for providing bandwidth-on-demand services over different administrative domains controlled by different local resource managers.

2012 17th European Conference on Networks and Optical Communications, 2012

Lecture Notes in Computer Science, 2013

2013 IEEE SDN for Future Networks and Services (SDN4FNS), 2013

2014 16th International Conference on Transparent Optical Networks (ICTON), 2014

ABSTRACT Software-Defined Networking and Network Functions Virtualisation has brought a revolutio... more ABSTRACT Software-Defined Networking and Network Functions Virtualisation has brought a revolution within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same time SDN models are identified as the futures solutions within the telecom realm. We provide in this article an overview of the SDN/NFV technologies over optical networks, as well as we provide the first formalisation model for the virtual network function complex scheduling problem. The article aims at being used as starting point in order to optimally solve the scheduling problem of virtual network functions that compose network services to be provisioned within the SDN paradigm.

2014 International Conference on Smart Communications in Network Technologies (SaCoNeT), 2014

ABSTRACT Software-Defined Networking and Network Functions Virtualization have initiated a new la... more ABSTRACT Software-Defined Networking and Network Functions Virtualization have initiated a new landscape within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same time SDN models are identified as the futures solutions within the telecom realm. In this article, we provide a brief overview of the application and state-of-the-art of SDN and NFV technologies over optical networks. At the same time, we provide the first formalisation model for the VNF complex scheduling problem, using the complex job formalisation. The article aims at being used as starting point in order to optimally solve the scheduling problem of virtual network functions that compose network services to be provisioned within the SDN paradigm. Finally, we also provide an example of the virtualization of the routing function over an SDN-enabled domain.

Radek Krzywania Poznan Supercomputing and Networking Center, ul. Noskowskiego 12/14, 61-704 Pozna... more Radek Krzywania Poznan Supercomputing and Networking Center, ul. Noskowskiego 12/14, 61-704 Poznan, Poland e-mail: radek.krzywania@man.poznan.pl ... Joan Antoni Garcia-Espin Distributed Applications and Networks Area, i2CAT C/Gran Capitŕ 2--4, oficina 203, Edifici Nexus 1, 08034, Barcelona, Catalonia, Spain e-mail: joan.antoni.garcia@i2cat.net ... Chin Guok Lawrence Berkeley National Laboratory, Energy Sciences Network 1 Cyclotron Road, Mail stop 50A-3111, Berkeley, CA 94720, USA e-mail:chin@es.net

2012 IEEE 1st International Conference on Cloud Networking (CLOUDNET), 2012

As bandwidth requirements and computing capacity for future applications have been predicted to e... more As bandwidth requirements and computing capacity for future applications have been predicted to exceed current network and IT infrastructure capabilities, providers face the need to adapt their provisioning models. This article presents the benefits of Cross Stratum Optimized architectures (provision of network and IT resources in a coordinated way) in support of Cloud-based applications. We also present the architecture's potential impact and benefits for operators, based on MACTOR methodology. MACTOR results show the interactions among value-chain actors and identify their business convergences and divergences, revealing the architecture feasibility.

2013 IEEE SDN for Future Networks and Services (SDN4FNS), 2013

ABSTRACT Although cloud computing and the Software Defined Network (SDN) framework are fundamenta... more ABSTRACT Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multi-technology problems are not sufficiently investigated. These multi-domain, end-to-end problems concern communication paths that span from the wireless access and the wireless backhaul networks to the IT resources through optical networks. In this paper we present the CONTENT project approach to network and infrastructure virtualization over heterogeneous, wireless and metro optical networks, that can be used to provide end-to-end cloud services. The project goal is to drive innovation across multi-technology infrastructures and allow ICT to be delivered and consumed as a service by Virtual Network Operators. The communication mechanics between wireless and optical domains and the physical layer abstractions of a CONTENT Virtual Network are presented and the relation of the proposed approach with the SDN framework is investigated.

This deliverable describes setup, execution, and results of tests in the WP1 test network consist... more This deliverable describes setup, execution, and results of tests in the WP1 test network consisting of five interconnected domains, each of them controlled by a separate Network Resource Provisioning System (NRPS). Furthermore, possibilities for enabling reservations spanning Network Service Plane (NSP) based networks as well as G2MPLS based networks and their requirements are analysed.

ABSTRACT This deliverable, named "NRPS southbound interfaces for standard GMPLS control ... more ABSTRACT This deliverable, named "NRPS southbound interfaces for standard GMPLS control plane", defines the interfaces and methods that have been implemented to provide a GMPLS interface for the Network Resources Provisioning Systems (NRPS) and the Network Service Plane (NSP).

This deliverable presents the results of several collaboration lines initiated by WP1 partners. M... more This deliverable presents the results of several collaboration lines initiated by WP1 partners. Mainly, cooperation with JRA3 from GÉANT2 and IDC from Internet2/DICE, and Phosphorus/Harmony partners contribution to standardization and other bodies such as the Open Grid Forum and the Glif community are described. Finally, collaboration with HSVO/SAVOIR project initiatives from the United States are presented, where the Harmony system has been enabled to interwork with the health systems from HSVO organisations.

Optical Networks, 2013

ABSTRACT During the last years, a trend has emerged at universities, large enterprises, governmen... more ABSTRACT During the last years, a trend has emerged at universities, large enterprises, government institutions, hospitals and public institutions towards acquiring and deploying their own dark-fibre or wavelength networks as opposed to purchasing bandwidth network services from the traditional operators. These institutions usually follow the condominium model to build and deploy their network. The parties get together in a joint effort to purchase the network equipment and deploy the dark fibre. Each institution gets a subset of the deployed fibre and part of the available ports, proportional to their initial investment. However, each institution manages their resources independently of the other organisations that share the physical substrate. Traditional control plane architectures cannot address the requirements of this type of networks, because they assume a single entity has administrative control of all the network elements in a physical domain. At the same time, a new set of bandwidth-intensive applications are emerging. e-Science applications, Grid applications and high-definition digital media streaming produce such a big amount of data that often justifies dedicating a network to a single application. In order to efficiently manage the resources, these applications must be able to configure the network in the way it better suits their needs. In response to these requirements, the user-controlled light paths (UCLP) concept, described in Sect. 2, allows a network to be partitioned in several independent management domains and exposes the network resources belonging to each partition as software objects or services under the control of different users. The UCLP results have evolved into Argia (Sect. 3), which is an effort towards creating a commercial product that can be deployed in production optical networks. UCLP and related works are the precursors of infrastructure as a service (IaaS) applied to networks and are changing the way network pieces are being acquired. For making the UCLP concept flexible to any kind of resources, the IaaS Framework (Sect. 4) addresses the need to have a unified framework using enterprise-grade tools and libraries in which new resources can quickly and easily be created. Finally, Sect. 5 introduces the multidomain provisioning systems and the Harmony implementation, an inter-domain broker solution for providing bandwidth-on-demand services over different administrative domains controlled by different local resource managers.

Abstract. During the last years, Grid applications have become one of the principal consumers of ... more Abstract. During the last years, Grid applications have become one of the principal consumers of distributed network resources. Grid applications would greatly benefit from a network-aware scheduler system. Harmony is a network resource brokering system ...

... Please use this identifier to cite or link to this item: Record Details. Record ID, 1262689. ... more ... Please use this identifier to cite or link to this item: Record Details. Record ID, 1262689. Record Type, conference. Author, Eduard Escalona; Shuping Peng; Reza Nejabati; Dimitra Simeonidou; Joan A Garcia-Espin; Jordi Ferrer; Sergi Figuerola; Giada Landi; Nicola Ciulli; ...

New emerging applications are bringing to telecom operators new optical infrastructure challenges... more New emerging applications are bringing to telecom operators new optical infrastructure challenges to be faced. Thus, we introduce a novel paradigm being studied under the FP7 GEYSERS project, based on optical resource abstraction mechanisms that aims at decoupling the physical infrastructure (optical and IT) from its virtual instance(s) and the Network Control Plane technologies that operate them.

Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual netw... more Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual networks for a physical infrastructure sharing purpose. However, different transport technologies may impact in both the amount and the characteristics of the different virtual instances that can be built on top of a single physical infrastructure. To analyse the impact of the transport technology in this regard, we present exact Integer Linear Programming (ILP) formulations that address the off-line problem of optimally allocate a set of virtual networks in two kind of substrates: wavelength switching and spectrum switching. Both formulations serve the purpose to provide opaque transport services from the virtual network point of view, where electronic terminations are assumed in the virtual network nodes. We carry out a series of experiments to validate the presented formulations and determine which is the impact of both substrates in the number of virtual networks that can be optimally allocated in the transport network.

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 2012

In this article we propose the GEYSERS project approach for Future Internet based on provisioning... more In this article we propose the GEYSERS project approach for Future Internet based on provisioning full infrastructures as a service by using IT and transport network resource virtualization. An overview of the project's architecture is provided that shows the layering scheme empowering the definition of Virtual Infrastructure service. The Logical Infrastructure Composition Layer in the architecture allows for operator-tailored planning of infrastructures, which also allows for a dynamic re-planning of the infrastructure depending on service needs. The rest of the article elaborates on the concept, characteristics and variants for modifying Virtual Infrastructures, as well as their implications.

Proceedings - 27th International Conference on Advanced Information Networking and Applications Workshops, WAINA 2013, 2013

Optical Networks, 2013

ABSTRACT During the last years, a trend has emerged at universities, large enterprises, governmen... more ABSTRACT During the last years, a trend has emerged at universities, large enterprises, government institutions, hospitals and public institutions towards acquiring and deploying their own dark-fibre or wavelength networks as opposed to purchasing bandwidth network services from the traditional operators. These institutions usually follow the condominium model to build and deploy their network. The parties get together in a joint effort to purchase the network equipment and deploy the dark fibre. Each institution gets a subset of the deployed fibre and part of the available ports, proportional to their initial investment. However, each institution manages their resources independently of the other organisations that share the physical substrate. Traditional control plane architectures cannot address the requirements of this type of networks, because they assume a single entity has administrative control of all the network elements in a physical domain. At the same time, a new set of bandwidth-intensive applications are emerging. e-Science applications, Grid applications and high-definition digital media streaming produce such a big amount of data that often justifies dedicating a network to a single application. In order to efficiently manage the resources, these applications must be able to configure the network in the way it better suits their needs. In response to these requirements, the user-controlled light paths (UCLP) concept, described in Sect. 2, allows a network to be partitioned in several independent management domains and exposes the network resources belonging to each partition as software objects or services under the control of different users. The UCLP results have evolved into Argia (Sect. 3), which is an effort towards creating a commercial product that can be deployed in production optical networks. UCLP and related works are the precursors of infrastructure as a service (IaaS) applied to networks and are changing the way network pieces are being acquired. For making the UCLP concept flexible to any kind of resources, the IaaS Framework (Sect. 4) addresses the need to have a unified framework using enterprise-grade tools and libraries in which new resources can quickly and easily be created. Finally, Sect. 5 introduces the multidomain provisioning systems and the Harmony implementation, an inter-domain broker solution for providing bandwidth-on-demand services over different administrative domains controlled by different local resource managers.

2012 17th European Conference on Networks and Optical Communications, 2012

Lecture Notes in Computer Science, 2013

2013 IEEE SDN for Future Networks and Services (SDN4FNS), 2013

2014 16th International Conference on Transparent Optical Networks (ICTON), 2014

ABSTRACT Software-Defined Networking and Network Functions Virtualisation has brought a revolutio... more ABSTRACT Software-Defined Networking and Network Functions Virtualisation has brought a revolution within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same time SDN models are identified as the futures solutions within the telecom realm. We provide in this article an overview of the SDN/NFV technologies over optical networks, as well as we provide the first formalisation model for the virtual network function complex scheduling problem. The article aims at being used as starting point in order to optimally solve the scheduling problem of virtual network functions that compose network services to be provisioned within the SDN paradigm.

2014 International Conference on Smart Communications in Network Technologies (SaCoNeT), 2014

ABSTRACT Software-Defined Networking and Network Functions Virtualization have initiated a new la... more ABSTRACT Software-Defined Networking and Network Functions Virtualization have initiated a new landscape within the telecom market landscape. Initial proof-of-concept prototypes for NFV-enabled solutions are being developed at the same time SDN models are identified as the futures solutions within the telecom realm. In this article, we provide a brief overview of the application and state-of-the-art of SDN and NFV technologies over optical networks. At the same time, we provide the first formalisation model for the VNF complex scheduling problem, using the complex job formalisation. The article aims at being used as starting point in order to optimally solve the scheduling problem of virtual network functions that compose network services to be provisioned within the SDN paradigm. Finally, we also provide an example of the virtualization of the routing function over an SDN-enabled domain.

Radek Krzywania Poznan Supercomputing and Networking Center, ul. Noskowskiego 12/14, 61-704 Pozna... more Radek Krzywania Poznan Supercomputing and Networking Center, ul. Noskowskiego 12/14, 61-704 Poznan, Poland e-mail: radek.krzywania@man.poznan.pl ... Joan Antoni Garcia-Espin Distributed Applications and Networks Area, i2CAT C/Gran Capitŕ 2--4, oficina 203, Edifici Nexus 1, 08034, Barcelona, Catalonia, Spain e-mail: joan.antoni.garcia@i2cat.net ... Chin Guok Lawrence Berkeley National Laboratory, Energy Sciences Network 1 Cyclotron Road, Mail stop 50A-3111, Berkeley, CA 94720, USA e-mail:chin@es.net

2012 IEEE 1st International Conference on Cloud Networking (CLOUDNET), 2012

As bandwidth requirements and computing capacity for future applications have been predicted to e... more As bandwidth requirements and computing capacity for future applications have been predicted to exceed current network and IT infrastructure capabilities, providers face the need to adapt their provisioning models. This article presents the benefits of Cross Stratum Optimized architectures (provision of network and IT resources in a coordinated way) in support of Cloud-based applications. We also present the architecture's potential impact and benefits for operators, based on MACTOR methodology. MACTOR results show the interactions among value-chain actors and identify their business convergences and divergences, revealing the architecture feasibility.

2013 IEEE SDN for Future Networks and Services (SDN4FNS), 2013

ABSTRACT Although cloud computing and the Software Defined Network (SDN) framework are fundamenta... more ABSTRACT Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multi-technology problems are not sufficiently investigated. These multi-domain, end-to-end problems concern communication paths that span from the wireless access and the wireless backhaul networks to the IT resources through optical networks. In this paper we present the CONTENT project approach to network and infrastructure virtualization over heterogeneous, wireless and metro optical networks, that can be used to provide end-to-end cloud services. The project goal is to drive innovation across multi-technology infrastructures and allow ICT to be delivered and consumed as a service by Virtual Network Operators. The communication mechanics between wireless and optical domains and the physical layer abstractions of a CONTENT Virtual Network are presented and the relation of the proposed approach with the SDN framework is investigated.

This deliverable describes setup, execution, and results of tests in the WP1 test network consist... more This deliverable describes setup, execution, and results of tests in the WP1 test network consisting of five interconnected domains, each of them controlled by a separate Network Resource Provisioning System (NRPS). Furthermore, possibilities for enabling reservations spanning Network Service Plane (NSP) based networks as well as G2MPLS based networks and their requirements are analysed.

ABSTRACT This deliverable, named "NRPS southbound interfaces for standard GMPLS control ... more ABSTRACT This deliverable, named "NRPS southbound interfaces for standard GMPLS control plane", defines the interfaces and methods that have been implemented to provide a GMPLS interface for the Network Resources Provisioning Systems (NRPS) and the Network Service Plane (NSP).

This deliverable presents the results of several collaboration lines initiated by WP1 partners. M... more This deliverable presents the results of several collaboration lines initiated by WP1 partners. Mainly, cooperation with JRA3 from GÉANT2 and IDC from Internet2/DICE, and Phosphorus/Harmony partners contribution to standardization and other bodies such as the Open Grid Forum and the Glif community are described. Finally, collaboration with HSVO/SAVOIR project initiatives from the United States are presented, where the Harmony system has been enabled to interwork with the health systems from HSVO organisations.

Optical Networks, 2013

ABSTRACT During the last years, a trend has emerged at universities, large enterprises, governmen... more ABSTRACT During the last years, a trend has emerged at universities, large enterprises, government institutions, hospitals and public institutions towards acquiring and deploying their own dark-fibre or wavelength networks as opposed to purchasing bandwidth network services from the traditional operators. These institutions usually follow the condominium model to build and deploy their network. The parties get together in a joint effort to purchase the network equipment and deploy the dark fibre. Each institution gets a subset of the deployed fibre and part of the available ports, proportional to their initial investment. However, each institution manages their resources independently of the other organisations that share the physical substrate. Traditional control plane architectures cannot address the requirements of this type of networks, because they assume a single entity has administrative control of all the network elements in a physical domain. At the same time, a new set of bandwidth-intensive applications are emerging. e-Science applications, Grid applications and high-definition digital media streaming produce such a big amount of data that often justifies dedicating a network to a single application. In order to efficiently manage the resources, these applications must be able to configure the network in the way it better suits their needs. In response to these requirements, the user-controlled light paths (UCLP) concept, described in Sect. 2, allows a network to be partitioned in several independent management domains and exposes the network resources belonging to each partition as software objects or services under the control of different users. The UCLP results have evolved into Argia (Sect. 3), which is an effort towards creating a commercial product that can be deployed in production optical networks. UCLP and related works are the precursors of infrastructure as a service (IaaS) applied to networks and are changing the way network pieces are being acquired. For making the UCLP concept flexible to any kind of resources, the IaaS Framework (Sect. 4) addresses the need to have a unified framework using enterprise-grade tools and libraries in which new resources can quickly and easily be created. Finally, Sect. 5 introduces the multidomain provisioning systems and the Harmony implementation, an inter-domain broker solution for providing bandwidth-on-demand services over different administrative domains controlled by different local resource managers.

Abstract. During the last years, Grid applications have become one of the principal consumers of ... more Abstract. During the last years, Grid applications have become one of the principal consumers of distributed network resources. Grid applications would greatly benefit from a network-aware scheduler system. Harmony is a network resource brokering system ...

... Please use this identifier to cite or link to this item: Record Details. Record ID, 1262689. ... more ... Please use this identifier to cite or link to this item: Record Details. Record ID, 1262689. Record Type, conference. Author, Eduard Escalona; Shuping Peng; Reza Nejabati; Dimitra Simeonidou; Joan A Garcia-Espin; Jordi Ferrer; Sergi Figuerola; Giada Landi; Nicola Ciulli; ...

New emerging applications are bringing to telecom operators new optical infrastructure challenges... more New emerging applications are bringing to telecom operators new optical infrastructure challenges to be faced. Thus, we introduce a novel paradigm being studied under the FP7 GEYSERS project, based on optical resource abstraction mechanisms that aims at decoupling the physical infrastructure (optical and IT) from its virtual instance(s) and the Network Control Plane technologies that operate them.

Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual netw... more Optical network infrastructures can be partitioned into multiple parallel, dedicated virtual networks for a physical infrastructure sharing purpose. However, different transport technologies may impact in both the amount and the characteristics of the different virtual instances that can be built on top of a single physical infrastructure. To analyse the impact of the transport technology in this regard, we present exact Integer Linear Programming (ILP) formulations that address the off-line problem of optimally allocate a set of virtual networks in two kind of substrates: wavelength switching and spectrum switching. Both formulations serve the purpose to provide opaque transport services from the virtual network point of view, where electronic terminations are assumed in the virtual network nodes. We carry out a series of experiments to validate the presented formulations and determine which is the impact of both substrates in the number of virtual networks that can be optimally allocated in the transport network.