Minimum Cost SDN Routing With Reconfiguration Frequency Constraints

Destounis, Apostolos; Paris, Stefano; Maggi, Lorenzo; Paschos, Georgios S.; Leguay, Jérémie

doi:10.1109/tnet.2018.2845463

Cited by 19 publications

(11 citation statements)

References 26 publications

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“…In response to this, research has been conducted to automatically generate procedures for updating to the desired network configuration and to verify configuration errors [6]. In addition, research is being conducted to minimize the frequency of network updates [7].…”

Section: A Sdnmentioning

confidence: 99%

Design and Prototype Implementation of Software-Defined Radio Over Fiber

et al. 2021

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Future networks require a high degree of flexibility over wide areas to enable many services that require higher quality wireless networks such as remote control of cars and remote surgery. Therefore, the network technology must combine high capacity, low latency, and flexibility. To deal with these requirements, we developed Software-Defined Radio over Fiber (SD-RoF), which is an architecture that tightly couples light and radio at a low cost. SD-RoF offers the following two key features: elastic wireless service and elastic bidirectional passthrough. The elastic wireless service provides users with access to wireless services that they need at any time in any place. The elastic bidirectional passthrough connects two remotely located points via RoF through radio waves and enables allowing for bidirectional radio communication between devices at each location. In this study, we design and prototype implementation of SD-RoF, and conduct a basic evaluation of the implemented circuit and demonstration experiments on elastic bidirectional passthrough. Through demonstration experiments, we found the feasibility and the challenges of SD-RoF. In addition, the deployment of SD-RoF, application scenarios, and operational issues are discussed.

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Section: A Sdnmentioning

confidence: 99%

Design and Prototype Implementation of Software-Defined Radio Over Fiber

et al. 2021

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“…Subsequent developments in optical cross‐connects [126] and SDN standards [103] enabling centralized control schemes have made this idea feasible for current fiber optic networks [93]. There is some work on this topic [34, 53, 54] but additional optimization‐based research would be useful.…”

Section: Backbone Networkmentioning

confidence: 99%

Telecommunications network design: Technology impacts and future directions

Wong

2020

Networks

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During the past 50 years telecommunication network technology has raced ahead powered by exponential advances in computer chip and fiber optic technology. The introduction of packet‐switched networks and the Internet has increased network traffic demands exponentially and has nurtured a variety of new telecommunication services (e.g., email, web‐surfing, social media, streaming services, e‐commerce, the Internet of Things, etc.) over the past 30 years. This rapidly changing environment (along with certain technical considerations) has made it very difficult to give accurate forecasts of traffic demands for both the short‐term (intraday) and for the longer term (year‐to‐year). Telecommunications network design has evolved from the voice‐only networks of the 1970s where operations research (OR) methodology was indispensable to current multiservice packet‐switched data networks whose uncertainty and rapid evolution has reduced the utility of classical optimization models that rely on accurate traffic demand forecasts. After summarizing the major developments in telecommunications network design technologies/services, we describe some promising future research directions to address an environment where technology is ever‐changing and traffic forecasting is difficult. In particular, we focus on the public Internet and emphasize possible work where OR/optimization methodology may be useful in understanding and solving telecommunications network routing and design problems.

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“…It is widely recognized that flow configuration, i.e., the configuration of flow forwarding rules at the SDN switches, is critical for SDN operation. Configuration updates due to changed flows must be performed consistently and quickly to avoid congestion [1], [2], [3], delays [4], loops and policy violations [3], [5], [6]. In particular, the need to reestablish disrupted flows caused by failing links as the result of a failure, congestion or attack on the network infrastructure, motivates the requirement to perform fast network reconfiguration.…”

Section: Introductionmentioning

confidence: 99%

“…The work from Paris et al [1] considers the variability of flow demand as a limitation to the applicability of solutions even as simple as a Linear Program (LP) formulation of the problem of flow reconfiguration. The authors consider an iterative execution of a global flow optimization problem, and propose the adoption of sub-optimal solution with gradually lower optimality gap at given time instants.…”

Section: Introductionmentioning

confidence: 99%

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Fast Network Configuration in Software Defined Networking

Achleitner

Bartolini

et al. 2018

IEEE Trans. Netw. Serv. Manage.

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Software Defined Networking (SDN) provides a framework to dynamically adjust and re-program the data plane with the use of flow rules. The realization of highly adaptive SDNs with the ability to respond to changing demands or recover after a network failure in a short period of time, hinges on efficient updates of flow rules. We model the time to deploy a set of flow rules by the update time at the bottleneck switch, and formulate the problem of selecting paths to minimize the deployment time under feasibility constraints as a mixed integer linear program (MILP). To reduce the computation time of determining flow rules, we propose efficient heuristics designed to approximate the minimum-deployment-time solution by relaxing the MILP or selecting the paths sequentially. Through extensive simulations we show that our algorithms outperform current, shortest path based solutions by reducing the total network configuration time up to 55% while having similar packet loss, in the considered scenarios. We also demonstrate that in a networked environment with a certain fraction of failed links, our algorithms are able to reduce the average time to reestablish disrupted flows by 40%.

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Minimum Cost SDN Routing With Reconfiguration Frequency Constraints

Cited by 19 publications

References 26 publications

Design and Prototype Implementation of Software-Defined Radio Over Fiber

Design and Prototype Implementation of Software-Defined Radio Over Fiber

Telecommunications network design: Technology impacts and future directions

Fast Network Configuration in Software Defined Networking

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