Interdomain path computation: Challenges and Solutions for Label Switched Networks

Aslam, Faisal; Uzmi, Zartash Afzal; Farrel, Adrian

doi:10.1109/mcom.2007.4342830

Cited by 32 publications

(27 citation statements)

References 7 publications

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“…When the path goes out of the routing area from the ingress node to the egress node or out of the AS of the ingress node, these solutions stop operation [17,18]. In these case, the path computation problem entails great complexity, because it is impossible to acquire complete routing information through the network.…”

Section: Sdn-based Path Managementmentioning

confidence: 99%

An Optimal Path Computation Architecture for the Cloud-Network on Software-Defined Networking

et al. 2015

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Legacy networks do not open the precise information of the network domain because of scalability, management and commercial reasons, and it is very hard to compute an optimal path to the destination. According to today's ICT environment change, in order to meet the new network requirements, the concept of software-defined networking (SDN) has been developed as a technological alternative to overcome the limitations of the legacy network structure and to introduce innovative concepts. The purpose of this paper is to propose the application that calculates the optimal paths for general data transmission and real-time audio/video transmission, which consist of the major services of the National Research & Education Network (NREN) in the SDN environment. The proposed SDN routing computation (SRC) application is designed and applied in a multi-domain network for the efficient use of resources, selection of the optimal path between the multi-domains and optimal establishment of end-to-end connections.

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Section: Sdn-based Path Managementmentioning

confidence: 99%

An Optimal Path Computation Architecture for the Cloud-Network on Software-Defined Networking

et al. 2015

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“…Namely, partial skeleton routes can be specified, and subsequent explicit route (ER) expansion can be used to resolve full label switched paths (LSPs) [1]. RSVP-TE also defines mechanisms for LSP set up across domain boundaries -contiguous, stitched, and nested [3]. Carefully note that proxy devices also can be used to incorporate proprietary domains under the GMPLS framework, for example, see the network-aware resource broker (NARB) in a DRAGON network.…”

Section: Oifmentioning

confidence: 99%

“…All PCC-PCE communication is performed via a new PCE protocol (PCEP) [4]. Although a PCE has access to local domain resource/policy databases, its inter-domain visibility may vary [3]. In the simplest case, a PCE may have knowledge only of its domain egress, namely, local visibility (lowtrust, inter-carrier).…”

Section: Oifmentioning

confidence: 99%

“…Alternatively, a PCE may have knowledge of physical inter-domain links and even resources in external domains, namely, partial visibility (high-trust, intra-carrier). Accordingly, two distributed path computation schemes are envisioned, per-domain and PCE-based [3]. The former computes paths in a domain-domain manner and is suitable for limited visibility.…”

Section: Oifmentioning

confidence: 99%

“…These solutions must be scalable and achieve a level of optimality, where optimality can be inferred as the TE path chosen in the idealized case of a "flat" network, that is, no partitioning with a global state [3]. Typically, these objectives can be conflicting.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Control plane design in multidomain/multilayer optical networks

Ghani¹,

Liu

Benhaddou

et al. 2008

IEEE Commun. Mag.

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As optical networks proliferate, there is a growing need to address distributed multidomain provisioning. Although multi-domain operation has been well-studied in packet/cellswitching networks, the multilayer (granularity) circuit-switched nature of modern optical networks presents a unique set of challenges. This survey addresses control plane design for such heterogeneous infrastructures and describes new challenges in the areas of state dissemination, path computation, and survivability. Sample results from a recent study also are presented.

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