Some open issues in multi-domain/multi-operator/multi-granular ASON/GMPLS networks

Spadaro, Salvatore; Velasco, Luis; Perelló, Jordi; Agraz, Fernando; Comellas, Jaume; Junyent, G.

doi:10.1109/icton.2009.5185089

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…Thus, it reduces the number of resources used for meeting the demands and minimizes the blocking probability ( BP ). The time‐aware signaling and routing in MDON is managed and controlled by network switching and control plane such as automatically switched optical network (ASON) and generalized multi protocol label switching (GMPLS) . The ASON and GMPLS provide a set of functions that include the setup, maintenance, and tear‐down time of the customer demands and enables the interaction between the IP and optical layer .…”

Section: Introductionmentioning

confidence: 99%

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Efficient resource provisioning using traffic balancing in multidomain optical networks

Batham

Yadav

Prakash

2016

Int J Communication

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Summary In multidomain optical networks (MDONs) the emerging multimedia, multivendor applications–based scheduled traffic (ST) is periodic and repeated day by day. The traffic is heavy during the working hours and slack during the non‐office hours. This results in the scarcity of network resources during the working hours, leading to the increased blocking of requests, even though there remains relatively large underused capacity during the non‐office hours. To use the network resources uniformly and efficiently, the demands may be slided within or shifted along the time zones/windows. In this paper, we first propose a heuristic algorithm, time‐aware routing and wavelength assignment (TA‐RWA), which allocates resources without traffic balancing (TB) for the ST in MDON. Time‐aware routing and wavelength assignment policy is then used as a benchmark for comparison with the 3 different TB solutions (named as P1‐TB, P2‐TB, and P3‐TB), in which the network load is redistributed by rescheduling the intradomain and interdomain demands. We performed extensive simulation experiments in MATLAB environment and compared the proposed policies with the existing ordering policies. From the results, it can be inferred that the proposed TB policies outperform the TA‐RWA, and the existing strategies of the blocking probability, resource utilization ratio (RUR), and percentage of intradomain and interdomain connections established. The best performance is achieved using P3‐TB strategy, in which requests are slided within, and shifted, along different time windows. The strategy shows about 70% reduction in the percentage blocking probability with respect to the TA‐RWA and the existing strategies.

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Section: Introductionmentioning

confidence: 99%

“…25,26 The ASON and GMPLS provide a set of functions that include the setup, maintenance, and tear-down time of the customer demands and enables the interaction between the IP and optical layer. 21 Today, GMPLS control plane is a powerful tool for future multidomain based backbone optical networks.…”

Section: Introductionmentioning

confidence: 99%

Efficient resource provisioning using traffic balancing in multidomain optical networks

Batham

Yadav

Prakash

2016

Int J Communication

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“…This time-aware routing and signaling is managed and controlled by switching network and control plane such as automatically switched optical network 12,13 and generalized multiprotocol label switching. [14][15][16] The automatically switched optical networks and generalized multiprotocol label switching frameworks provide a set of functions that include the setup, maintenance, and tear-down time of the client demands.The MDON mainly consist of many single domain optical networks, which are interconnected by inter-domain links through the border nodes, where each domain may be located at different geographical area, incorporate vastly diverse technology, administrative policies, routing protocols, and multiple service providers (SPs). [17][18][19] The internal topological details of each domain are usually hidden to all other domains due to the domain management policies, administrative confidentiality, and scalability constraints.…”

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confidence: 99%

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Survivability using traffic balancing and backup resource reservation in multi‐domain optical networks

Batham

Yadav

Prakash

2018

Int J Communication

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Survivability in the geographically distributed backbone multi-domain optical networks (MDONs) is critical because of issues related to its size, usage of resources, and domain management policies of the comprising domains. In MDONs, the emerging scheduled traffic is increasingly multivendor, multimedia, and periodic. It is high during the office (working) hours and low during the non-office (non-working) hours in a day. A connection failure during the office hours may result in huge amount of information being lost. Towards providing an acceptable level of service even when a connection fails, we first provide traffic balancing (TB) based solutions where the intra/inter-domain traffic is slided (S1-TB), shifted (S2-TB), or slided as well as shifted (S3-TB) based on the service level agreement between the client and domain service provider. Of the above solutions, the solution based on sliding as well as shifting (S3-TB) performs best, and hence for further improvement in S3-TB, we incorporate backup multiplexing with advance backup resource reservation (BRR) and evaluate the performance of the strategy and report results. The performance evaluation of the above strategies is compared with the existing extended path shared protection (EPSP) by a simulator developed in MATLAB and tested on three-domain and five-domain standard network topologies, on the metrics of blocking probability, network resource utilization ratio, network capacity utilized by backup route, wavelength link used per backup lightpath, and a newly introduced metric, network resource utilization index. As compared with the existing strategy EPSP, the S3-TB and S3-TB with BRR showed improved performance on all the metrics. branch office to the head office, and scientific data movement at some specific time and duration or the unspecified time and specified duration. [1][2][3][4][5] In literature, the time specific traffic is known as scheduled traffic (ST). 6 The ST connection request is of three types such as scheduled lightpath demands (SLDs), 7-9 sliding SLDs (SSLDs), 10,11 and delay tolerant (DT) traffic demands/requests. 4,5 If the setup and tear-down time of connection requests is fixed and known a priori, it can be referred as SLDs. If the starting and ending time of window within which a demand is to be scheduled is known, the traffic can be referred to as SSLDs, whereas the connection requests which allow some tolerable delay comprise the DT traffic. The SLDs raise new challenges and opportunities in MDONs due to domain diversity, lack of global information (such as network topology, routing, and resource availability), wavelength continuity, time clashing (overlapping), and time-disjoint constraints. To serve the SLDs, time-aware routing and signaling is essential. This time-aware routing and signaling is managed and controlled by switching network and control plane such as automatically switched optical network 12,13 and generalized multiprotocol label switching. 14-16 The automatically switched optical networks and generalized multipr...

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Energy-efficient design for multi-granular optical transport networks with optical reach consideration

Naas

Kantarcı

Mouftah

2014

Optical Switching and Networking

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Some open issues in multi-domain/multi-operator/multi-granular ASON/GMPLS networks

Cited by 3 publications

References 15 publications

Efficient resource provisioning using traffic balancing in multidomain optical networks

Efficient resource provisioning using traffic balancing in multidomain optical networks

Survivability using traffic balancing and backup resource reservation in multi‐domain optical networks

Energy-efficient design for multi-granular optical transport networks with optical reach consideration

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