Browsing by Author "Cadette Dutra, Diego"
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- Benchmarking the ONOS Intent interfaces to ease 5G service management
A4 Artikkeli konferenssijulkaisussa(2018) Addad, Rami; Cadette Dutra, Diego; Bagaa, Miloud; Taleb, TarikThe use cases of the upcoming 5G mobile networks introduce new and complex user demands that will require support for fast reconfiguration of network resources. Software Defined Network (SDN) is a key technology that can address these requirements, as it decouples the control plane from the data plane of the network devices and logically centralizes the control plane in the SDN controller. SDN network operating system (ONOS) is a state-of-art SDN controller that aims to address this important scalability limitation from its design. An important feature of ONOS is that it allows network administrators to configure and manage networks with a high-level of abstraction by using Intent specifications. An Intent is a policy expression describing what is the desired outcome rather than how the outcome should be reached. The concept of Intents coupled with the distributed storage space are the key components for the theoretical scalability of ONOS. In this paper, we present our evaluation of the ONOS Intent northbound interface using a methodology that takes into consideration the interface access method, type of Intent and number of installed Intents. Our preliminary analysis indicates a linear increase in the computational cost with regards to the number of submitted Intents, with the access method being a major factor in the overall computational cost. - Ensuring end-to-end QoS based on multi-paths routing using SDN technology
A4 Artikkeli konferenssijulkaisussa(2017-12) Cadette Dutra, Diego; Bagaa, Miloud; Taleb, Tarik; Samdanis, KonstantinosSoftware Defined Networking (SDN) is an emerging technology that will play an important role in enabling 5G, since it offers enhanced network management features. SDN allows programmability of the control plane, abstracting the underlying network infrastructure for applications and network services, e.g. through the OpenFlow protocol. In this paper, we propose a solution that enables the end-to-end Quality of Service (QoS) based on the queue support in OpenFlow, allowing an operator with a SDN-enabled network to efficiently allocate the network resources according to the users' demands, reducing or even eliminating the need for over-provisioning. For each traffic flow, the proposed solution guarantees the required end-to- end QoS, while efficiently managing the utilization of open virtual switches (OVSs), which leads to reduced cost. The cost could be also reduced as a fewer number of OVSs are needed, which are enabled in different data centers. For ensuring these objectives, the proposed solution explores the strength of multi-path routing based on SDN with a precise bandwidth allocation. The obtained results show the efficiency of the proposed solution in terms of cost and execution time. - Fast Service Migration in 5G Trends and Scenarios
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä(2020-03-01) Addad, Rami; Cadette Dutra, Diego; Bagaa, Miloud; Taleb, Tarik; Flinck, HannuThe need for faster and higher-capacity networks that can sustain modern, high-demanding applications has driven the development of 5G technology. Moreover, support for low-latency communication (1ms -10ms) is one of the main requirements of 5G systems. Multi-access Edge Computing (MEC) has been seen as a key component to attain the 5G objectives, since it allows hosting and executing critical services at the vicinity of users, thus reducing the latency to its minimum. Motivated by the evolution of real-time applications, we propose and evaluate two different mechanisms to improve the end-user experience by leveraging container-based live migration technologies. The first solution is aware of the users' mobility patterns, while the other is oblivious to the users' paths. Our results show approximately 50 percent reduction in downtime, which demonstrates the efficiency of the proposed solutions compared to prior works using similar underlying technology, i.e., LXC or Docker. - MIRA!: An SDN-based Framework for Cross-Domain Fast Migration of Ultra-Low Latency 5G Services
A4 Artikkeli konferenssijulkaisussa(2018) Addad, Rami; Cadette Dutra, Diego; Taleb, Tarik; Bagaa, MiloudGiven the constantly growing demand for inter-data-center services that 5G networks are bringing, live migration has become a covet and very challenging technology. Meanwhile, the emergence of Software Defined Networking (SDN) and Network Function Virtualization (NFV) technologies has completely transformed modern networks by offering more flexibility and at the same time more complexity. So far, investigations have been confined to integrating the live migration process with SDN/NFV paradigms in order to ensure the desired Quality of Experience (QoE). However, the simple integration is not sufficient to handle unexpected cases such as resources’ unavailability, networking issues, and system control. For this purpose, we present MIRA!, a novel framework for managing reliable live migrations of virtual resources across different Infrastructure as a Service (IaaS), handling unexpected cases, while ensuring high QoS and a very low downtime without human intervention using an SDN aware solution. To validate our proposed framework, we performed a set of experimental evaluations under different configurations. The obtained results of our proposed framework show a 21% time reduction compared to a prior work and an interesting behavior while modifying the number of allocated CPU cores. - Towards A Fast Service Migration in 5G
A4 Artikkeli konferenssijulkaisussa(2018-10) Addad, Rami; Cadette Dutra, Diego; Bagaa, Miloud; Taleb, Tarik; Flinck, HannuThe development of the 5G technology has been driven by the need for faster and higher-capacity networks that would be able to sustain modern, high-demanding applications and low-latency communication. For achieving such requirements, the services should be shifted towards the vicinity of the users as much as possible. In this scope, Multi-access Edge Cloud (MEC) will play a tremendous role in 5G technology by hosting various services close to the end-users. Thanks to the MEC technology, different services could be placed near the User Equipment (UEs) for enabling very low latency and high bandwidth communication, which is required by real-time applications, such as mobile broadband in vehicles that are characterized by high UEs mobility. In order to ensure the service requirement in terms of low-latency communication, those services should follow (i.e., service migration) the user mobility by placing them always at the closest MEC. Motivated by the evolution of real time applications, we propose and evaluate three different mechanisms to improve the end user experience by using container-based live migration paradigm. In these approaches, we leverage the follow-me edge concept for enabling lightweight live migration. While the two first solutions take into consideration the mobile users' paths (e.g., cars), the third one is oblivious to the users' paths. The obtained results demonstrate the efficiency of these solutions compared to prior works. - Towards Modeling Cross-Domain Network Slices for 5G
A4 Artikkeli konferenssijulkaisussa(2018) Addad, Rami; Taleb, Tarik; Bagaa, Miloud; Cadette Dutra, Diego; Flinck, HannuNetwork Slicing (NS) is expected to be a key functionality of the upcoming 5G systems. Coupled with Software Defined Networking (SDN) and Network Function Virtualization (NFV), NS will enable a flexible deployment of Network Functions belonging to multiple Service Function Chains (SFC) over a shared infrastructure. To address the complexities that arise from this new environment, we formulate a MILP optimization model that enables a cost- optimal deployment of network slices, allowing a Mobile Network Operator to efficiently allocate the underlying layer resources according to the users' requirements. For each network slice, the proposed solution guarantees the required delay and the bandwidth, while efficiently handling the usage of underlying nodes, which leads to reduced cost. The obtained results show the efficiency of the proposed solution in terms of cost and execution time for small-scale networks, while it shows an interesting behavior in the optimization of the mapping of slices into underlay nodes of the large-scale topologies. - Virtual Security as a Service for 5G Verticals
A4 Artikkeli konferenssijulkaisussa(2018) Khettab, Yacine; Bagaa, Miloud; Cadette Dutra, Diego; Taleb, Tarik; Toumi, NassimaThe future 5G systems ought to meet diverse requirements of new industry verticals, such as Massive Internet of Things (IoT), broadband access in dense networks and ultra-reliable communications. Network slicing is an important concept that is expected to support these 5G verticals and cope with the conflicting requirements of their respective services. Network slicing allows the deployment of multiple virtual networks, or slices, over the same physical infrastructure as well as supporting on-demand resource allocation to those slices. In this paper, we propose an architecture that will explore how both Network Function Virtualization (NFV) and Software Defined Networking (SDN) may be leveraged to secure a network slice on-demand, addressing the new security concerns imposed to the network management by the flexibility and elasticity support. Our proposed framework aims to ensure an optimal resource allocation that manages the slice security strategy in an efficient way. Moreover, experimental performance evaluations are presented to evaluate the security overhead in virtualized environments.