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In this paper we focus on 1+1 dedicated protection in multi-layer network formed by Connection-Oriented (CO) Ethernet over Wavelength Switched Optical Networks (WSON) under the framework of a GMPLS control plane. We propose a dynamic path computation algorithm that is used for computing both the working and protecting paths, ensuring the Shared Risk Link Group (SRLG) disjointness at both layers. The...
In this paper, we propose a path-computation algorithm for a dynamic virtual network topology (VNT) configuration. We focus on a multi-layer network formed by a connection-oriented Ethernet over a wavelength-switched optical network under the framework of a unified generalized multi-protocol label-switching control plane. The algorithm chooses the route depending on the current state of the network...
In this paper we propose a dynamic multi-layer path computation algorithm which favors the re-usage of FA LSPs (Forwarding Adjacency Label Switched Path) and virtual links over a new LSP establishment. To evaluate the algorithm, we explore several approaches for the dynamic configuration of the Virtual Network Topology (VNT) within a multi-layer network (Connection - Oriented Ethernet transport over...
In this paper we focus on the dynamic Virtual Network Topology (VNT) configuration in a Connection-Oriented (CO) Ethernet over Wavelength Switched Optical Network (WSON), controlled by a single instance of the GMPLS control plane. We propose the usage of a FA (Forwarding Adjacency) link timer, which postpones the release of the induced link, avoiding the eventual new creation of the FA between the...
This paper focuses on the dynamic Virtual Network Topology (VNT) configuration in a multi-layer (CO-Ethernet over WSON) network controlled by a unified GMPLS control plane. An on-line multi-layer path computation based on the shortest path algorithm is devised, using a path cost function which depends on the state and the attributes of the network elements (i.e., nodes and links). The aim is to promote...
In this paper we focus on end-to-end (e2e) 1+1 dedicated path protection in a Connection-Oriented (CO) Ethernet over Wavelength Switched Optical Network (WSON) controlled by a unified GMPLS control plane. We propose a multi-layer protection scheme in which a path computation algorithm for both, working and protecting path is presented. The path computation algorithm for the working path is a shortest...
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