ABNO-driven content distribution in the telecom cloud
As current traffic growth is expected to strain capacity of today¿s metro network, novel content distribution architectures where contents are placed closer to the users are being investigated. In that regard, telecom operators can deploy datacenters (DCs) in metro areas, thus reducing the impact of...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/108152 |
| Acceso en línea: | https://hdl.handle.net/2117/108152 https://dx.doi.org/10.1016/j.osn.2015.07.006 |
| Access Level: | acceso abierto |
| Palabra clave: | Telecommunication -- Traffic -- Management Optical communications Data processing service centers Datacenter interconnection Optical networks Content distribution Telecomunicació -- Tràfic -- Gestió Comunicacions òptiques Centres informàtics Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica |
| Sumario: | As current traffic growth is expected to strain capacity of today¿s metro network, novel content distribution architectures where contents are placed closer to the users are being investigated. In that regard, telecom operators can deploy datacenters (DCs) in metro areas, thus reducing the impact of the traffic between users and DCs. In this paper, a hierarchical content distribution architecture for the telecom cloud is investigated: core DCs placed in geographically distributed locations, are interconnected through permanent “per content provider” (CP) virtual network topologies (CP-VNT); additionally, metro DCs need to be interconnected with the core DCs. CP¿s data is replicated in the core DCs through the CP-VNTs, while metro-to-core (M2C) anycast connections are established periodically for content synchronization. Since network failures might disconnect the CP-VNTs, recovery mechanisms are proposed to reconnect both topologies and anycast connections. Topology creation, anycast provisioning, and recovery problems are first formally stated and modeled as Integer Linear Programs (ILP) and heuristic algorithms are proposed. Exhaustive simulation results show significant improvements in both supported traffic and restorability. Workflows to implement the algorithms within the Applications-based Network Operations (ABNO) architecture and extensions for PCEP are proposed. Finally, the architecture is experimentally validated in UPC's SYNERGY test-bed running our ABNO-based iONE architecture. |
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