Hybrid IP/SDN Networking: Open Implementation and Experiment Management Tools

Salsano, Stefano; Ventre, Pier Luigi; Lombardo, Francesco; Siracusano, Giuseppe; Gerola, Matteo; Salvadori, Elio; Santuari, Michele; Campanella, M.; Prete, Luca

doi:10.1109/tnsm.2015.2507622

Cited by 34 publications

(24 citation statements)

References 20 publications

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“…This is a Southbound API as seen from the controller point of view. Similar solutions have been proposed recently and often referred to as hybrid IP/SDN (see for example [18]). The peculiarity and novelty of our approach is that we consider an SRv6 enabled network, hence our node offers a SRv6 Southbound API.…”

Section: Linux Srv6 Node Architecturementioning

confidence: 88%

SDN Architecture and Southbound APIs for IPv6 Segment Routing Enabled Wide Area Networks

Ventre

Tajiki

Filsfils³

2018

IEEE Trans. Netw. Serv. Manage.

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The SRv6 architecture (Segment Routing based on IPv6 data plane) is a promising solution to support services like Traffic Engineering, Service Function Chaining and Virtual Private Networks in IPv6 backbones and datacenters. The SRv6 architecture has interesting scalability properties as it reduces the amount of state information that needs to be configured in the nodes to support the network services. In this paper, we describe the advantages of complementing the SRv6 technology with an SDN based approach in backbone networks. We discuss the architecture of a SRv6 enabled network based on Linux nodes. In addition, we present the design and implementation of the Southbound API between the SDN controller and the SRv6 device. We have defined a data-model and four different implementations of the API, respectively based on gRPC, REST, NETCONF and remote Command Line Interface (CLI). Since it is important to support both the development and testing aspects we have realized an Intent based emulation system to build realistic and reproducible experiments. This collection of tools automate most of the configuration aspects relieving the experimenter from a significant effort. Finally, we have realized an evaluation of some performance aspects of our architecture and of the different variants of the Southbound APIs and we have analyzed the effects of the configuration updates in the SRv6 enabled nodes.

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Section: Linux Srv6 Node Architecturementioning

confidence: 88%

SDN Architecture and Southbound APIs for IPv6 Segment Routing Enabled Wide Area Networks

Ventre

Tajiki

Filsfils³

2018

IEEE Trans. Netw. Serv. Manage.

Self Cite

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“…Sequential assignment of resources may cause resource partitioning. To cope this, if the variable f lag is not set to true (line 9) then FFR tries to find a proper LSP by adding the free capacity of links to the LSP and comparing the new LSP capacity with the flow size (lines [10][11][12][13][14][15][16]. In lines 17-19, the selected LSP is assigned to the flow, however, if a proper LSP is not found then the LSP Recreation function would invoked.…”

Section: Fast Flow Re-routing Heuristic (Ffr)mentioning

confidence: 99%

SDN‐based resource allocation in MPLS networks: A hybrid approach

Tajiki

Akbari

Mokari

et al. 2018

Concurrency and Computation

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The highly dynamic nature of the current network traffics makes the network managers to exploit the flexibility of the state-of-the-art paradigm called SDN. In this way, there has been an increasing interest in hybrid networks of SDN-MPLS. In this paper, a new traffic engineering architecture for SDN-MPLS network is proposed. To this end, OpenFlow-enabled switches are applied over the edge of the network to improve flow-level management flexibility while MPLS routers are considered as the core of the network to make the scheme applicable for existing MPLS networks. The proposed scheme re-assigns flows to the Label-Switched Paths (LSPs) to highly utilize the network resources. In the cases that the flow-level re-routing is insufficient, the proposed scheme re-computes and re-creates the undergoing LSPs. To this end, we mathematically formulate two optimization problems, ie, i) flow re-routing and ii) LSP re-creation, and propose a heuristic algorithm to improve the performance of the scheme. Our experimental results show the efficiency of the proposed hybrid SDN-MPLS architecture in traffic engineering superiors traditionally deployed MPLS networks. KEYWORDS hybrid networks, MPLS, OpenFlow, PCE/PCEP, SDN, software defined WAN 1 INTRODUCTION Service providers around the world have large investments in highly sophisticated and feature-rich MPLS network infrastructures for providing services to their customers. These infrastructures are built on traditional network equipment (combined data plane and control plane), which are costly to scale, complex to manage, and time consuming to reconfigure. Network Function Virtualization (NFV), cloud computing, and the proliferation of connected devices are leading to exponentially increasing traffic and significant fluctuations in usage patterns. These reasons make network operators to move to agile architectures that support dynamic reconfiguration of both services and the network infrastructures. 1 For service providers, these capabilities provide new revenues, reduce time to market, increase new service uptake, and enhance their ability to meaningfully differentiate their offerings. 2The state-of-the-art paradigm called SDN 3 along with the OpenFlow protocol 4 provides lots of new traffic management features. 5 This makes it a proper and highly adopted technology for data center networks. One of the most important benefits of employing OpenFlow is its ability to route/re-route the traffic flows based on the network traffic pattern. In other words, it optimally routes/re-routes the traffic in flow level granularity.Therefore, there are lots of novel works that focus on traffic engineering in pure OpenFlow networks. 6-11 However, migration from carrier networks that are mostly MPLS-based to OF-based network is challenging and highly expensive.To circumvent the aforementioned challenges, we propose a novel traffic engineering architecture in which the integration of OpenFlow and traditional MPLS is adopted. This traffic engineering architecture is motivated by scenarios where S...

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“…It provides a distributed router based on RouterFlow [9] to reduce the operational complexity of maintaining IP routers through OpenFlow switches in the network. OSHI [10] is an open source hybrid IP/SDN network using Quagga routing software suite. It provides a hybrid IP/SDN device as a router/switch node that can operate both at IP level and SDN level within the same domain.…”

Section: Related Workmentioning

confidence: 99%

A Hybrid Software Defined Networking Architecture for Next-Generation IoTs

2018

KSII TIIS

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Everything in the world is becoming connected and interactive due to the Internet. The future of interactive smart environments such as smart cities, smart industries, or smart farms demand high network bandwidth, high network flexibility, and self-organization systems without costly hardware upgrades, and they provide a sustainable, scalable, and replicable smart environment backbone infrastructure. This paper presents a new Hybrid Software-Defined architecture for integrating Internet-of-Things technologies that are essential technologies for smart environments. It combines a software-defined networking infrastructure and a real-time distributed network framework with an advanced optimization to enable self-configuration, self-management, and self-adaption for providing seamless communication and efficiently managing a vast number of smart heterogeneous devices.

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Hybrid IP/SDN Networking: Open Implementation and Experiment Management Tools

Abstract: Tor Vergata -(2) Consortium GARR -(3) CREATE-NET -(4) ON.Lab

Cited by 34 publications

References 20 publications

SDN Architecture and Southbound APIs for IPv6 Segment Routing Enabled Wide Area Networks

SDN Architecture and Southbound APIs for IPv6 Segment Routing Enabled Wide Area Networks

SDN‐based resource allocation in MPLS networks: A hybrid approach

A Hybrid Software Defined Networking Architecture for Next-Generation IoTs

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