A comparative study of restoration schemes and spare capacity assignments in mesh networks

Patel, Maulin; Chandrasekaran, R.; Venkatesan, S.

doi:10.1109/icccn.2003.1284200

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…The second instance that we analyze is an artificial network (Test network) that has been first introduced by [28]. It is composed by n = 9 nodes and 15 bidirected edges that compose m = 30 arcs.…”

Section: Resultsmentioning

confidence: 99%

Primary and backup paths optimal design for traffic engineering in hybrid IGP/MPLS networks

Mereu

Cherubini²,

Fanni

et al. 2009

2009 7th International Workshop on Design of Reliable Communication Networks

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Abstract-The paper describes an optimization model which aims at minimizing the maximum link utilization of IP telecommunication networks under the joint use of the traditional IGP protocols and the more sophisticated MPLS-TE technology. The survivability of the network is taken into account in the optimization process implementing the path restoration scheme. This scheme benefits of the Fast Re-Route (FRR) capability allowing service providers to offer high availability and high revenue SLAs (Service Level Agreements). The hybrid IGP/MPLS approach relies on the formulation of an innovative Linear Programming mathematical model that, while optimizing the network utilization, provides optimal user performance, efficient use of network resources, and 100% survivability in case of single link failure. The possibility of performing an optimal exploitation of the network resources throughout the joint use of the IGP and MPLS protocols provides a flexible tool for the ISP (Internet Service Provider) networks traffic engineers.The efficiency of the proposed approach is validated by a wide experimentation performed on synthetic and real networks. The obtained results show that a limited number of LSP tunnels have to be set up in order to significantly reduce the congestion level of the network while at the same time guaranteeing the survivability of the network.

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Section: Resultsmentioning

confidence: 99%

Primary and backup paths optimal design for traffic engineering in hybrid IGP/MPLS networks

Mereu

Cherubini²,

Fanni

et al. 2009

2009 7th International Workshop on Design of Reliable Communication Networks

View full text Add to dashboard Cite

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“…However, if a link is present in more than one segment, then a backup path must be chosen from the set of backup path segments. While there may be several possible ways in which segmented path protection may be achieved [16], this paper considers one variant of the segmented path protection, referred to as Diversion, that diverts the connection from the last node before the failed link directly to the destination. For the example considered in Fig.…”

Section: Segmented Path Protectionmentioning

confidence: 99%

Comparison of failure dependent protection strategies in optical networks

Ramasubramanian

Harjani

2006

Photon Netw Commun

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The criticality of survivable network design and operation increases with increasing transmission speed. Path protection strategies achieve better network utilization compared to link protection strategies; however, the recovery time of connections in path protection strategies are higher than that in link protection strategies. This paper evaluates and compares the performance of three failure dependent strategies: (1) failure dependent path protection; (2) link protection; and (3) Diversion-a variant of the segmented path protection approach. In addition, a framework for evaluating the connection recovery time is also developed. The protection strategies are compared for their recovery time and blocking performance using extensive simluations.

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