Patent ID: 9065759
Filing Date: 2015-06-23
Classification: H04L

Abstract:
1. A mesh network comprising: a working data path including end nodes; a protection data path including the end nodes and an intermediate node not part of the working data path, the intermediate node configured to (i) accept a protection request along a data path from an end node, (ii) determine whether a local resource for a protection data path is available for the protection request, (iii) (a) activate a connection of the protection data path if the local resource is available and (b) forward the protection request along the protection data path to use to activate a next connection of the protection data path if the local resource is available, and (iv) notify, along the data path, the end node from which the protection request originated that the protection data path is unavailable if the local resource is unavailable for enabling a connection of the protection data path to be activated; and multiple nested protection domains, wherein the intermediate node is further configured to determine that the local resource for the protection data path is available for the protection request if the protection data path is at the same or higher level protection domain compared with protection domains of other available protection data paths that are available for the protection request.