Improving Survivability through Traffic Engineering in MPLS Networks

Amin, Mina; Ho, Kin-Hon; Pavlou, George; Howarth, Michael

doi:10.1109/iscc.2005.84

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Although it states that MIRA is computationally complex yet, it has been utilized more number of times than that in the original MIRA algorithm [7]. The paper [3] proposes a probabilistic algorithm for improving survivability of the selected paths for the traffic demands in the network. It proposes four cost functions and computes their performance by sequentially implementing the cost functions in the algorithms.…”

Section: Related Workmentioning

confidence: 99%

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Probabilistic Selection of QoS Paths for Improving Survivability in MPLS Networks

Singh¹,

Chaudhari²,

Saxena³

2013

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Many applications do not fit well with the traditional best effort packet delivery policy of the Internet. These include applications such as Internet telephony and video conferencing which require voice and bulky graphical images transfer. Therefore, the policies of assigning traffic to various service classes and providing service as per the service level agreement of the user with the network provider came into existence. Multi-protocol Label Switching is the backbone of fast switching technology that helps the network service providers to implement these policies. It provides Quality of service oriented reserved paths from the source to the destination for the user's traffic. Selection of these paths is a cumbersome task, especially when the traffic forecast is totally unknown. Furthermore, nodes and link failures in the Internet worsen the situation. This paper addresses the issue of selecting Label Switched Paths (LSPs) for various traffic demands in the network so that the resultant network has the characteristics like high failure resistance, low LSP demand blocking probability, low impact from the node or link failure, load balancing and low overall resource utilization. By extensive simulations, the proposed cost function has been compared with the various cost functions mentioned in the literature and it was found to score over them in major aspects.

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Section: Related Workmentioning

confidence: 99%

“…Failure in the network cannot be fully avoided but it can be reduced if some consideration is paid to the failure history of the link during its selection [3]. This paper proposes a model for selection of paths with the lowest cost functions.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Selection of QoS Paths for Improving Survivability in MPLS Networks

Singh¹,

Chaudhari²,

Saxena³

2013

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“…Protection at the network layer can provide high level of flexibility and better resource efficiency. Research presented in [11], [12] are examples about protection trends where it was shown that SBPP can provide flexible, low cost and end-to-end protection.In this section, we review two important multipath provisioning methods based on SPM for IP/MPLS and in SONET/SDH networks.…”

Section: Related Work and Backgroundmentioning

confidence: 99%

Availability-Constrained Multipath Protection in Backbone Networks with Double-Link Failure

Fayek

2008

2008 IEEE International Conference on Communications

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Reliability is crucial for high speed backbone networks. Protection mechanisms are therefore critical in the design of infrastructure networks. This paper investigates a new multipath provisioning model with availability-guarantee on networks where events of up to two simultaneous link failures can occur. A service level agreement (SLA) which mandates service availability must be met even during network failure situations. We present a mathematical formulation to perform optimal capacity allocation in both GMPLS Self-protecting Multi-path (SPM) environment and SONET/SDH networks. Linear Programming (LP) and Integer Linear Programming (ILP) models are formulated in this study to provide multi-path protection mechanisms on MPLS and SONET/SDH networks. Network Service Providers (NSP) could use this mathematical model to design a network with certain availability requirement according to a priori defined SLAs to accommodate network traffic under dual link failure scenarios.

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“…In the proposed method, each LSR establishes the bypass tunnels to its NNHop LSR, and the PBT (n hops) means that the bypass tunnels established by a LSR can have n extra hops over the LSR and its NNHop LSR. RSVP represents Extended RSVP [11], and Pre-Qualify represents Efficient Pre-Qualify [17]. Fig.…”

Section: Simulationsmentioning

confidence: 99%

“…Some methods also consider the traffic engineering when establishing the backup path [7,9,11,17]. A broken link or LSR affects all working paths passing through it.…”

Section: Introductionmentioning

confidence: 99%