Distributed schemes for diverse path computation in multidomain MPLS networks

Ricciato, Fabio; Monaco, U.; Ali, Dina Farouk ALtayeb

doi:10.1109/mcom.2005.1452842

Cited by 35 publications

(23 citation statements)

References 1 publication

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“…Certainly, a trade-off exists between the optimality of the resulting QoS paths and the size of the AR. Two different ARs based on the advertisement of the available disjoint paths between the border nodes of a domain can be found in [4] and [12].…”

Section: Figure 4 A) Per-domain Lsp Computation Based On Ero Expanmentioning

confidence: 99%

“…For example, in [12] the disjoint paths computed by a source PCE are both routed along the same chain of domains, since it is assumed that the AS-level path is known in advance (e.g., is precomputed by BGP). The AR in this case is basically an abstraction of an AS-path.…”

Section: Routing Decisionmentioning

confidence: 99%

“…4) are far from optimal, so alternative routing strategies like [4,12,13] deserve to be investigated.…”

Section: Routing Decisionmentioning

confidence: 99%

“…The latter case is subject to the well-known trap topology problem [12], hence network resources can be consumed more efficiently when both paths are computed simultaneously. Accordingly, the heuristic algorithm controlling the decisions made by a PCE should be able to compute disjoint paths at the same time.…”

Section: Strategy For the Computation Of Restoration Pathsmentioning

confidence: 99%

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On the challenges of establishing disjoint QoS IP/MPLS paths across multiple domains

et al. 2006

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MPLS is being actively adopted as the core switching infrastructure at the intradomain level. This trend is mainly attributable to the undeniable potential of MPLS in terms of Virtual Private Networks (VPNs) management, traffic engineering (TE), QoS delivery, path protection, and fast recovery from network failures. However, little progress has been made to attain the expected extension of MPLS label-switched paths (LSPs) across domain boundaries. Among the problems that remain unsolved is how to efficiently find and establish primary and protection interdomain LSPs for mission-critical services subject to QoS constraints. This article explores the major limitations hindering the deployment of these kinds of LSPs across multiple domains, in the context of the current interdomain network model. We describe the critical problems faced by the research community, and present our vision on how to rationally overcome some of the problems exposed. Our perspective is that we should be prepared for rather coarsegrained solutions as long as we need to coexist with the current interdomain network model.

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Section: Figure 4 A) Per-domain Lsp Computation Based On Ero Expanmentioning

confidence: 99%

Section: Routing Decisionmentioning

confidence: 99%

“…4) are far from optimal, so alternative routing strategies like [4,12,13] deserve to be investigated.…”

Section: Routing Decisionmentioning

confidence: 99%

Section: Strategy For the Computation Of Restoration Pathsmentioning

confidence: 99%

See 2 more Smart Citations

On the challenges of establishing disjoint QoS IP/MPLS paths across multiple domains

et al. 2006

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“…Connection diversity can also be used for load balancing, or to split a large flow into smaller parallel connections if there are no connections with enough bandwidth to support the whole flow. Because of its importance for such applications, the connection diversity is a requirement for interdomain traffic engineering [2]. A large number of resilience procedures and architectures affecting the level of the reliability has been developed in recent years.…”

Section: Introductionmentioning

confidence: 99%

Optimized Protection Schemes for Resilient Interdomain Traffic Distribution

Kantor

Chołda

Jajszczyk

2009

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference

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Due to the development of Next Generation Networks, leading to a multiservice transport layer with a multidomain environment, the importance of interconnection issues keeps growing. As the number of possible partners increases, operators face different routing options with regard to service quality and cost. We present the extension of the Least Cost Routing (LCR) concept which takes into account the reliability issues. As for a large number of variables the LCR problem is unsolvable, some heuristic algorithms to find the problem solution are proposed and evaluated. The solution helps to optimize connections among telecommunication operators by minimizing costs for served demands and protecting against network failures.

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GigaManP2P: an overlay network for distributed QoS management and resilient routing

et al. 2011

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SUMMARYManagement of long-distance, high-speed optical backbones spanning multiple administrative domains requires new solutions for challenging tasks. In particular, it is not trivial to negotiate, monitor and continuously enforce the required quality of service (QoS) for applications that span multiple domains. This paper proposes GigaManP2P: a novel peer-to-peer (P2P) management architecture for high-speed QoSaware backbones. GigaManP2P peers provide management services in a ubiquitous fashion through modules that interface with both the communication infrastructure and network users. In particular, we describe management services for on inter-domain QoS monitoring and resilient routing. After detecting a QoS constraint violation trend, a proactive rerouting strategy is triggered based on redundant virtual circuits, allowing both full and partial rerouting. The P2P overlay implementation is the basis for allowing transparent communication across autonomous systems. Experimental results showing the overhead of the P2P infrastructure in comparison to raw Simple Network Management Protocol, and the performance of the rerouting strategy, are presented.

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Distributed schemes for diverse path computation in multidomain MPLS networks

Cited by 35 publications

References 1 publication

On the challenges of establishing disjoint QoS IP/MPLS paths across multiple domains

On the challenges of establishing disjoint QoS IP/MPLS paths across multiple domains

Optimized Protection Schemes for Resilient Interdomain Traffic Distribution

GigaManP2P: an overlay network for distributed QoS management and resilient routing

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