Content-aware traffic engineering

Frank, Benjamin; Poese, Ingmar; Smaragdakis, Georgios; Uhlig, Steve; Feldmann, Anja

doi:10.1145/2254756.2254819

Cited by 26 publications

(24 citation statements)

References 7 publications

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“…Traditionally, CDNs operate solely on self-obtained information and metrics, which is often inaccurate and gives only an estimate of end-to-end performance rather than specifics of the traversed networks and links [27,28]. In line with the vision presented in this article, there has been a recent push towards collaborative techniques between CDNs and ISPs, giving the latter the opportunity to steer the CDN server selection process based on more accurate information from its own network.…”

Section: Content Delivery Networkmentioning

confidence: 99%

“…In line with the vision presented in this article, there has been a recent push towards collaborative techniques between CDNs and ISPs, giving the latter the opportunity to steer the CDN server selection process based on more accurate information from its own network. Frank et al proposed Content-aware Traffic Engineering (CaTE) [28]. The framework leverages the location diversity offered by distributed CDNs, influencing the delivery path of content by selecting an appropriate server.…”

Section: Content Delivery Networkmentioning

confidence: 99%

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End-to-End Resource Management for Federated Delivery of Multimedia Services

et al. 2013

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Recently, the Internet has become a popular platform for the delivery of multimedia content. Currently, multimedia services are either offered by Over-the-top (OTT) providers or by access ISPs over a managed IP network. As OTT providers offer their content across the best-effort Internet, they cannot offer any Quality of Service (QoS) guarantees to their users. On the other hand, users of managed multimedia services are limited to the relatively small selection of content offered by their own ISP. This article presents a framework that combines the advantages of both existing approaches, by dynamically setting up federations between the stakeholders involved in the content delivery process. Specifically, the framework provides an automated mechanism to set up end-to-end federations for QoSaware delivery of multimedia content across the Internet. QoS contracts are automatically negotiated between the content provider, its customers, and the intermediary network domains. Additionally, a federated resource reservation algorithm is presented, which allows the framework to identify the optimal set of stakeholders and resources to include within a federation. Its goal is to minimize delivery costs for the content provider, while satisfying customer QoS requirements. Moreover, the presented framework allows intermediary storage sites to be included in these federations, supporting on-the-fly deployment of content caches along the delivery paths. The algorithm was thoroughly evaluated in order to validate our approach and assess the merits of including intermediary storage sites. The results clearly show the benefits of our method, with delivery cost reductions of up to 80% in the evaluated scenario.

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Section: Content Delivery Networkmentioning

confidence: 99%

Section: Content Delivery Networkmentioning

confidence: 99%

End-to-End Resource Management for Federated Delivery of Multimedia Services

et al. 2013

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“…While some of the proposals have focused on content placement strategy only (Sourlas et al, 2012;Laoutaris et al, 2006;Borst et al, 2010;Dai et al, 2012;Wauters et al, 2006;Korupolu and Dahlin, 2002), others have proposed new mechanisms to manage the redirection of user requests (Valancius et al, 2013;Frank et al, 2012). Optimal solution structures for the combined problem of content placement and server selection have also been developed (Baev and Rajaraman, 2008;Bekta et al, 2008;Applegate et al, 2010).…”

Section: Related Workmentioning

confidence: 99%

“…These range from ISP-centric caching approaches (Kamiyama et al, 2009;Cho et al, 2011), which exclude CDNs from the delivery chain, to collaborative solutions (Jiang et al, 2009;Frank et al, 2012;Wichtlhuber et al, 2015), defining new models of cooperation between ISPs and CDNs. Another relevant initiative concerns the Content Delivery Network Interconnection (CDNI) working group of the Internet Engineering Task Force (IETF) which focuses on standardizing the communications between CDNs to allow interoperability between different vendors 1 .…”

Section: Related Workmentioning

confidence: 99%

Hybrid multi-tenant cache management for virtualized ISP networks

Claeys

Tuncer

Famaey

et al. 2016

Journal of Network and Computer Applications

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In recent years, Internet Service Providers (ISPs) have started to deploy Telco Content Delivery Networks (Telco CDNs) to reduce the pressure on their network resources. The deployment of Telco CDNs results in reduced ISP bandwidth utilization and improved service quality by bringing the content closer to the end-users. Furthermore, virtualization of storage and networking resources can open up new business models by enabling the ISP to simultaneously lease its Telco CDN infrastructure to multiple third parties. Previous work has shown that multi-tenant proactive resource allocation and content placement can significantly reduce the load on the ISP network. However, the performance of this approach strongly depends on the prediction accuracy for future content requests. In this paper, a hybrid cache management approach is proposed where proactive content placement and traditional reactive caching strategies are combined. In this way, content placement and server selection can be optimized across tenants and users, based on predicted content popularity and the geographical distribution of requests, while simultaneously providing reactivity to unexpected changes in the request pattern. Based on a Video-on-Demand (VoD) production request trace, it is shown that the total hit ratio can be increased by 43% while using 5% less bandwidth compared to the traditional Least Recently Used (LRU) caching strategy. Furthermore, the proposed approach requires 39% less migration overhead compared to the proactive placement approach we previously proposed in Claeys et al. (2014b) and achieves a hit ratio increase of 19% and bandwidth usage reduction of 7% in the evaluated VoD scenarios and topology.

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“…This is mainly attributed to the fact that CDN providers control both the placement of content in surrogate servers spanning different geographic locations, as well as the decision on where to serve client requests from (i.e., server selection) [6]. These decisions are taken without knowledge of the precise network topology and state in terms of traffic load, and can result in network performance degradation affecting the service quality experienced by the end users.…”

Section: Introductionmentioning

confidence: 99%

Scalable Cache Management for ISP-Operated Content Delivery Services

Tuncer

Sourlas

Charalambides

et al. 2016

IEEE J. Select. Areas Commun.

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Abstract-Content Delivery Networks (CDNs) have been the prevalent method for the efficient delivery of content across the Internet. Management operations performed by CDNs are usually applied based only on limited information about Internet Service Provider (ISP) networks, which can have a negative impact on the utilization of ISP resources. To overcome these issues, previous research efforts have been investigating ISPoperated content delivery services, by which an ISP can deploy its own in-network caching infrastructure and implement its own cache management strategies. In this paper, we extend our previous work on ISP-operated content distribution and develop a novel scalable and efficient distributed approach to control the placement of content in the available caching points. The proposed approach relies on parallelizing the decision-making process and the use of network partitioning to cluster the distributed decision-making points, which enables fast reconfiguration and limits the volume of information required to take reconfiguration decisions. We evaluate the performance of our approach based on a wide range of parameters. The results demonstrate that the proposed solution can outperform previous approaches in terms of management overhead and complexity while offering similar network and caching performance.

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Content-aware traffic engineering

Cited by 26 publications

References 7 publications

End-to-End Resource Management for Federated Delivery of Multimedia Services

End-to-End Resource Management for Federated Delivery of Multimedia Services

Hybrid multi-tenant cache management for virtualized ISP networks

Scalable Cache Management for ISP-Operated Content Delivery Services

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