Paper Info
Title
On the dimensioning of survivable optical metro/core networks with dual-homed access
Abstract
Long-reach passive optical networks (LR-PONs) are able to effectively support the growing demand of traffic originating from residential and business customers. Failures of metro/core (M/C) nodes serving the traffic to/from the access networks covered by LR-PONs, may potentially affect hundreds or thousands of customers. One way of guaranteeing 100% survivability from single-node failures is to apply dual-homing, where each LR-PON is connected to two M/C nodes, and combine it with node-disjoint dedicated-path protection (DPP). In this paper, we present a new approach to provide network survivability against single M/C node failures. Instead of applying dedicated path protection (DPP) strategy, which can require huge amount of extra resources, we combine an unprotected network design with a dynamic multilayer restoration algorithm. Our aim is to determine a suitable amount of resource overbuild (in terms of extra transponders) needed to provide average connection availability close to that guaranteed by DPP. Preliminary results show that dimensioning for the worst-case scenario among a set of predefined M/C node failures, i.e., the one disrupting the highest number of connections, yields to a cost-effective strategy requiring up to 35% less transponders than DPP, while offering the same average connection availability.
Year
DOI
Venue
2015
10.1109/HPSR.2015.7483089
2015 IEEE 16th International Conference on High Performance Switching and Routing (HPSR)
Keywords
Field
DocType
Dual-homing,LR-PON,flat metro/core network,IP-over-WDM resilience schemes,traffic blocking and survivability
Survivability,Network planning and design,Computer science,Passive optical network,Communications system,Computer network,Dual-homed,Dimensioning,Access network,Path protection
Conference
Citations 
PageRank 
References 
0
0.34
5
Authors
6
Name
Order
Citations
PageRank
José Luis Izquierdo-Zaragoza1306.03
Marija Furdek25413.96
Avishek Nag3528.75
Paolo Monti413515.94
lena wosinska544249.88
Pablo Pavón-Mariño69820.58