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Exploiting Dual Homing in Access Networks to Improve Resiliency in Core Networks
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0001-5600-3700
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0002-5636-9910
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0001-6704-6554
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2016 (English)In: Journal of Optical Communications and Networking, ISSN 1943-0620, E-ISSN 1943-0639, Vol. 8, no 11, p. 854-862Article in journal (Refereed) Published
Abstract [en]

We propose a network architecture consisting of long-reach passive optical network-based access and a transparent optical core network. The end users are connected to the remote node or the local exchange (LE) through an optical distribution network, and the remote node is connected by disjoint feeder fiber links to central offices located in two distinct metro/ core (MC) nodes. This method of connecting a single remote node to two geographically separate MC nodes for dedicated protection in case of feeder fiber failure is referred to as dual homing. In this work, we explore the benefits of dual homing in the access in simultaneously providing better resilience and load balancing in the core network considering connections between LEs. While looking into the benefits of dual homing in terms of network resiliency, we also explore whether the path redundancies added by dual homing play a role in providing efficient distribution of load across the core network and thereby reduce the cost of provisioning capacity in terms of number of lightpaths, transponders, etc. Dual homing at both the source and destination LEs offers more options for paths between LEs through the core network. Our results show that dual-homed access proves to be advantageous over single-homed access in terms of enhancing both core network resiliency and facilitating better load balancing.

Place, publisher, year, edition, pages
Optical Society of America, 2016. Vol. 8, no 11, p. 854-862
Keywords [en]
Dual homing, Long-reach PON, Optimization, Resiliency
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-199565DOI: 10.1364/JOCN.8.000854ISI: 000388941800010Scopus ID: 2-s2.0-85012136608OAI: oai:DiVA.org:kth-199565DiVA, id: diva2:1065056
Note

QC 20170113

Available from: 2017-01-13 Created: 2017-01-09 Last updated: 2017-11-29Bibliographically approved

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Furdek, MarijaMonti, PaoloWosinska, Lena

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