Experimental Investigation of Quality of Service in an IP All-Optical Network Adopting Wavelength Conversion

Valenti, A.; Pompei, S.; Rea, Luca; Matera, F.; Beleffi, G. Tosi; Curti, F.; Bartolo, S. Di; Incerti, G.; Forin, D.

doi:10.1364/jocn.1.00a170

Cited by 12 publications

(12 citation statements)

References 13 publications

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“…To guarantee an End-to-End minimum bandwidth in the backbone path, we use the technique described in [20] that allows us to assign a guaranteed bandwidth between two end-points of the network by means of different tagging techniques, that is, virtual LAN and virtual private LAN service (VPLS). This technique enforces strict bandwidth requirements so that background traffic that may be present on the testbed does not interfere with our tests.…”

Section: Methodsmentioning

confidence: 99%

Multilevel bandwidth measurements and capacity exploitation in gigabit passive optical networks

et al. 2014

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The authors report an experimental investigation on the measurement of the available bandwidth for the users in gigabit passive optical networks (GPON) and the limitations caused by the Internet protocols, and transfer control protocol (TCP) in particular. We point out that the huge capacity offered by the GPON highlights the enormous differences that can be showed among the available and actually exploitable bandwidth. In fact, while the physical layer capacity can reach value of 100 Mb/s and more, the bandwidth at disposal of the user (i.e. either throughput at transport layer or goodput at application layer) can be much lower when applications and services based on TCP protocol are considered. In the context of service level agreements (SLA) verification, we show how to simultaneously measure throughput and line capacity by offering a method to verify multilayer SLA. We also show how it is possible to better exploit the physical layer capacity by adopting multiple TCP connections avoiding the bottleneck of a single connection.

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Section: Methodsmentioning

confidence: 99%

Multilevel bandwidth measurements and capacity exploitation in gigabit passive optical networks

et al. 2014

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“…Depending balance principle role in the boat at any time on the x-axis torque mode sum to zero, both the following balance equation [5]:…”

Section: Identification Methods Of Rolling Motion and Pitching Motion mentioning

confidence: 99%

Research on the Rolling Motion and Pitch Motion of Planing Boat

Zhang¹,

Wei²,

Yang³

2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

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Abstract. In this paper, a planing boat has been selected as the research object, which has been used as a model to make a new model by scaling. And the free decay experiments have been conducted under different states including different rolling angle, different pitching angle and different ship's draft, whose corresponding mathematical models have been established according to the characteristics of the planing boat. A identification system using optimization concept has been used to identify the experimental data, which finally obtained the variation law of hydrodynamic derivatives. And the hydrodynamic coefficients related have been obtained by the later analyzing the data. The results and the methods of studying the planing boat can provide basis for the improvement in the navigating performance of the planing boat.

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“…In particular, as reported in [28], VPLS can be used to manage reliable unbundling in a PON, guaranteeing bandwidth and QoS to the users. VPLS is compatible with novel optical technologies such as the AOWC [23,24]. In particular, the network performance of a WAN GbE with the presence of an AOWC based on four-wave mixing in dispersion shifted (DS) fiber was tested, and it was verified that the AOWC does not introduce any signal degradation and can be achieved in a very short time, guaranteeing the out-of-service requirement of wide bandwidth real-time services such as HD TV streaming.…”

Section: Current Ethernet Scenario: the Vplsmentioning

confidence: 96%

“…The introduction of optical processing can be seen as a migration of functions from Layer 3 to Layer 1, and, in this environment, it is clear that processes at Layer 2 will be the bridge between Layer 3 and Layer 1. Just in the framework of Layer 2 operations, a fundamental role is played by the evolution toward the carrier Ethernet approach [23] and by the increasing capacity of GbE transmission, which is evolving to become an end-to-end technology spanning across LANs, MANs, and WANs with several impacts also on the backbone segment. Therefore, GbE transmission is gaining more and more importance in several network contexts, playing the key role in the convergence between the IP and optical environments.…”

Section: Downloaded By [University Of West Florida] At 03:50 11 Octobmentioning

confidence: 99%

“…Looking at GbE WDM aspects, some advantages are evident, not only in terms of fiber capacity, but also in terms of network OAM functionalities, as, for example, the all-optical restoration [24]. In this optics/IP convergence context, the introduction of the AOWC will be one of the relevant processes at Layer 1 for efficient wavelength allocation to enhance routing capabilities and to improve network re-configurability [23,25].…”

Section: Downloaded By [University Of West Florida] At 03:50 11 Octobmentioning

confidence: 99%

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Network Evolution Toward a Carrier-Grade Ethernet Transport Network

Coiro

Valenti

Pompei

et al. 2009

Fiber and Integrated Optics

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In this article, an overview is presented about state-of-the-art Ethernet technology and its evolutions beyond local area networks into metropolitan and wide area networks as carrier-grade technologies. It will be shown that the Ethernet can be used to guarantee the performance of current transport technologies in terms of operations, administration and maintenance, quality of service, monitoring, and test capabilities in support of service level agreements; in particular, the Ethernet could replace current transport techniques, simplifying network design and reducing both capital and operational expenditures. The Ethernet data-plane evolution will also be presented, from the virtual bridged local area network up to provider backbone bridging traffic engineering, including the issues related to the control plane. Also indicated is a future scenarios dealing with close interworking with optical technologies. In conclusion, a summary is given of experimental activities carried out on the virtual private local area network service, a current Layer 2 technique that can be assumed as a first step toward a carrier-grade Ethernet, which show the implementation of reliable wide area networks based only on gigabit Ethernet transmission.

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Experimental Investigation of Quality of Service in an IP All-Optical Network Adopting Wavelength Conversion

Cited by 12 publications

References 13 publications

Multilevel bandwidth measurements and capacity exploitation in gigabit passive optical networks

Multilevel bandwidth measurements and capacity exploitation in gigabit passive optical networks

Research on the Rolling Motion and Pitch Motion of Planing Boat

Network Evolution Toward a Carrier-Grade Ethernet Transport Network

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