Stitching Inter-Domain Paths over IXPs

Kotronis, Vasileios; Klöti, Rowan; Rost, Matthias; Georgopoulos, Panagiotis; Ager, Bernhard; Schmid, Stefan; Dimitropoulos, Xenofontas

doi:10.1145/2890955.2890960

Cited by 36 publications

(41 citation statements)

References 70 publications

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“…The work SDX [8] is deployed on Internet eXchange Points (IXPs) and impacts the interdomain traffic between the IXPs' member networks. The work CXP [10] further extends SDX. It uses SDN centralized control over multiple IXPs to create QoS-aware end-to-end paths.…”

Section: Introductionmentioning

confidence: 78%

“…But it only impacts the inter-domain traffic between the IXPs' member networks. CXP [10] extends SDX to multiple IXPs' cooperation with centralized control to construct QoS-aware end-to-end paths across multiple ISPs. WEBridge [14] proposes an approach for inter-domain SDN to create peer session and exchange network views between SDN domains.…”

Section: Related Workmentioning

confidence: 99%

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A SDN-Based Framework for Fine-Grained Inter-domain Routing Diversity

Wang

Zhang

2017

Mobile Netw Appl

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The Internet reserves numerous potential path diversity among densely connected autonomous systems (ASes). However, the Internet routing is controlled by Border Gateway Protocol (BGP), which has limitations in path diversity expression and cooperation between ASes. The emergence of software defined networking (SDN) scheme provides flexible control over networks. In this paper, we leverage the programmability of SDN, and propose a new routing control plane, named RCS. It can support flexible inter-domain forwarding control, and enable network functions chaining along inter-domain paths. In RCS, network functions are abstracted and disseminated between SDN ASes. Customer networks can set up desired routing paths for particular applications, such as multipath routing. RCS can be deployed incrementally to apply SDN on current inter-domain settings. In our experimental analysis based on BGP data, the provision of RCS control at only a few ASes can lead to much potential path diversity.

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Section: Introductionmentioning

confidence: 78%

Section: Related Workmentioning

confidence: 99%

A SDN-Based Framework for Fine-Grained Inter-domain Routing Diversity

Wang

Zhang

2017

Mobile Netw Appl

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“…Future work : Close collaboration between the application and the network is effective for ultra‐low delay sensitive cases such as the NMP systems. The proposed Software‐Defined NMP solution can be also applied in the real Internet, considering the domains (Autonomous Systems) as “big switches” connected with physical links or classic overlay tunneling mechanisms –. Apart from this type of service, there are various daily life applications that can support this concept.…”

Section: Discussionmentioning

confidence: 99%

“…The proposed Software-Defined NMP solution can be also applied in the real Internet, considering the domains (Autonomous Systems) as "big switches" connected with physical links or classic overlay tunneling mechanisms. [97][98][99] Apart from this type of service, there are various daily life applications that can support this concept. A modified version of our system could incorporate ultra-low delay encoding/decoding methods (eg, Opus 22 ) for modifying the audio bit-rate based on the network conditions.…”

Section: Discussionmentioning

confidence: 99%

Improving networked music performance systems using application‐network collaboration

Lakiotakis

Liaskos

Dimitropoulos

2018

Concurrency and Computation

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Summary Networked Music Performance (NMP) systems involve musicians located in different places who perform music while staying synchronized via the Internet. The maximum end‐to‐end delay in NMP applications is called Ensemble Performance Threshold (EPT) and should be less than 25 milliseconds. Due to this constraint, NMPs require ultra–low‐delay solutions for audio coding, network transmission, relaying, and decoding, each one a challenging task on its own. There are two directions for study in the related work referring to the NMP systems. From the audio perspective, researchers experiment on low‐delay encoders and transmission patterns, aiming to reduce the processing delay of the audio transmission, but they ignore the network performance. On the other hand, network‐oriented researchers try to reduce the network delay, which contributes to reduced end‐to‐end delay. In our proposed approach, we introduce an integration of dynamic audio and network configuration to satisfy the EPT constraint. The basic idea is that, the major components participating in an NMP system, the application and the network interact during the live music performance. As the network delay increases, the network tries to equalize it by modifying the routing behavior using Software‐Defined Networking principles. If the network delay exceeds a maximum affordable threshold, the network reacts by informing the application to change the audio processing pattern to overcome the delay increase, resulting in below EPT end‐to‐end delay. A full prototype of the proposed system was implemented and extensively evaluated in an emulated environment.

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“…The proposed solutions have demonstrated that bringing SDN to inter-domain routing can indeed improve the convergence performance of BGP [12], offer new routing capabilities [6], or lay the groundwork for new services and markets [13], [7]. However, most of previous works are systemoriented: they propose new systems or architectures, and focus on design or implementation aspects.…”

Section: Introductionmentioning

confidence: 99%

Can SDN accelerate BGP convergence?— A performance analysis of inter-domain routing centralization

Sermpezis

Dimitropoulos

2017

2017 IFIP Networking Conference (IFIP Networking) and Workshops

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The Internet is composed of Autonomous Systems (ASes) or domains, i.e., networks belonging to different administrative entities. Routing between domains/ASes is realised in a distributed way, over the Border Gateway Protocol (BGP). Despite its global adoption, BGP has several shortcomings, like slow convergence after routing changes, which can cause packet losses and interrupt communication even for several minutes. To accelerate convergence, inter-domain routing centralization approaches, based on Software Defined Networking (SDN), have been recently proposed. Initial studies show that these approaches can significantly improve performance and routing control over BGP. In this paper, we complement existing system-oriented works, by analytically studying the gains of inter-domain SDN. We propose a probabilistic framework to analyse the effects of centralization on the inter-domain routing performance. We derive bounds for the time needed to establish data plane connectivity between ASes after a routing change, as well as predictions for the control-plane convergence time. Our results provide useful insights (e.g., related to the penetration of SDN in the Internet) that can facilitate future research. We discuss applications of our results, and demonstrate the gains through simulations on the Internet AS-topology. • We propose a model (Section II) and methodology (Sections III and IV) for the performance analysis of interdomain routing centralization. To our best knowledge, we are the first to employ a probabilistic approach to study the performance of inter-domain SDN. • We analyse the time that the network needs to establish connectivity after a routing change. In particular, we derive upper and lower bounds for the time needed to achieve data-plane connectivity between two ASes (Section III), and exact expressions and approximations for the time till control-plane convergence over the entire network (Section IV). Our results are given by closed-form expressions, as a function of network parameters, like network size, path lengths, and number of SDN nodes. • Based on the theoretical expressions, as well as on extensive simulation results, we provide insights for potential gains of centralization, inter-domain SDN deployment strategies, network economics, etc.We believe that our study can be useful in a number of directions. Research in inter-domain SDN can be accelerated

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Stitching Inter-Domain Paths over IXPs

Cited by 36 publications

References 70 publications

A SDN-Based Framework for Fine-Grained Inter-domain Routing Diversity

A SDN-Based Framework for Fine-Grained Inter-domain Routing Diversity

Improving networked music performance systems using application‐network collaboration

Can SDN accelerate BGP convergence?— A performance analysis of inter-domain routing centralization

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