An efficient hybrid protection scheme with shared/dedicated backup paths on elastic optical networks

Anoh, Nogbou Georges; Michel, Babri; Kora, Ahmed Dooguy; Faye, Roger Marcelin; Aka, Boko; Lishou, Claude

doi:10.1016/j.dcan.2016.05.001

Cited by 50 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4 in [17]). In the proposed algorithm, named as Modified Dual-path Allocation algorithm (Modified DPA), it was assumed that two link-disjoint paths are calculated on the basis of two weight matrices which causes the weakening of the objective function (2). The first matrix is…”

Section: Optimization Problem Solutionmentioning

confidence: 99%

“…In [1], an offline Routing and Spectrum Allocation (RSA) problem with Dedicated Path Protection (DPP) in EON is proposed. In turn, in [2] two algorithms have been proposed that solve the offline RSA problem with working path protection. The first one is with shared backup path protection and the second one is with dedicated backup path protection.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modified Dual-Path Allocation Algorithm in Elastic Optical Networks

Olszewski

2020

J Netw Syst Manage

View full text Add to dashboard Cite

Dual-path allocation problem is considered to be a case of multipath routing in Elastic Optical Networks. In this article, the optimization problem is formulated and a dual-path allocation algorithm that solves this problem proposed. In the considered problem all traffic for each request is broken into two equal parts, which are directed along two link-disjoint paths. After any link failure, half of the traffic for each affected request is realized. The proposed algorithm is based on the two weight matrices: the elements of the first one depend on the actual length of the links and their utilization, while the elements of the second one assume unit values if the links exist in the network. The proposed algorithm rejects smaller requests and provides a much lower bandwidth blocking probability than other analyzed algorithms.

show abstract

Section: Optimization Problem Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified Dual-Path Allocation Algorithm in Elastic Optical Networks

Olszewski

2020

J Netw Syst Manage

View full text Add to dashboard Cite

show abstract

“…The hybrid protection algorithm also called hybrid protection light path which defines the power consumption and resource availability that has been proposed in [15] for EON. For every request the shortest backup path with minimum resource utilization has been selected.…”

Section: Related Workmentioning

confidence: 99%

A Resource Efficient Recovery Strategy for a Failure in Elastic Optical Networks

Kumar*,

Kumar,

Sharma

2020

IJRTE

View full text Add to dashboard Cite

In the last few years, internet traffic increases continuously due to the more use of live streaming and social sites. To accommodate such high traffic demand the more bandwidth is required. The elastic optical network (EON) is a promising solution for the capacity expansion that can meet the future bandwidth requirement. The EON can provide a higher bit rate. In this paper we purposed a recovery strategy for failure in EON. Our purposed strategy shows the more acceptance rate for randomly generated source (s)-destination (d) requests. Here we considered two topologies viz. COST239 and NSFNET. Then evaluate their performance for Recovery Time, bandwidth blocking probability (BBP) and network capacity utilization (NCU), in which our purposed scheme provides lesser BBP and lower NCU for both topologies and low recovery time than shared path protection (SPP and dedicated path protection (DPP).

show abstract

“…These models are designed to find optimal routes based on static traffic information with an objective to minimize network resources. These models are designed subject to the criteria to assign network resources to given set of lightpaths requests [15], [21]- [23]. In dynamic RSA problems, ligthpath requests with finite holding time and variable bandwidth demands arrives randomly and hold resources in the network till departure.…”

Section: Introductionmentioning

confidence: 99%

Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

et al. 2021

View full text Add to dashboard Cite

Fixed alternate routing is a potential routing scheme for routing and spectrum allocation (RSA) in elastic optical networks (EON) which has less complexity and time consumption compared to adaptive routing scheme. However, adaptive routing scheme efficiently reduces the amount of network bandwidth blocking probabilities (BBPs) which uses traffic engineered paths and tunes according to the current network status. In this paper, an algorithm for routing is proposed for dynamic traffic in EON which works iteratively to arrange the pre-computed fixed alternate routes offline to incorporate link loading. During the offline process, the pre-computed routes are arranged with an objective to reduce link congestion and diverts lightpaths to the under-utilized links. The proposed scheme merges the properties of fixed alternate routing and adaptive routing and is utilized for dynamic traffic in EON. It has been shown through simulation results that the proposed scheme efficiently improves the performance of RSA in EON and reduces the amount of BBPs compared to the fixed alternate routing and an existing constrained-lower-indexed-block (CLIB) based adaptive routing algorithm. The proposed LCA greatly reduces congestion over all links during dynamic network operation and lowers congestion spikes over some links which occues in the existing alternate routing scheme in different network scenarios.

show abstract

An efficient hybrid protection scheme with shared/dedicated backup paths on elastic optical networks

Cited by 50 publications

References 20 publications

Modified Dual-Path Allocation Algorithm in Elastic Optical Networks

Modified Dual-Path Allocation Algorithm in Elastic Optical Networks

A Resource Efficient Recovery Strategy for a Failure in Elastic Optical Networks

Link Congestion Aware Proactive Routing for Dynamic Traffic in Elastic Optical Networks

Contact Info

Product

Resources

About