Patent ID: 8599703
Filing Date: 2013-12-03
Classification: H04L

Abstract:
1. A method for determining the availability of an end-to-end physical path associated with reserved resources of a tunnel, comprising: determining, for a plurality of optical network nodes, a resource status for one or more resources of each node, where the resources comprise internal optical components of each node; recording, for each node, the resource status for its resources in a message; communicating, by each node, its associated message to the other nodes; receiving, by at least one particular node of the plurality of nodes, the messages communicated from the other nodes; storing, by the at least one particular node, the resource statuses for each of the other nodes; determining, by the at least one particular node, an availability of an end-to-end path of reserved resources of the tunnel including one or more of the other nodes based on an analysis of the resource statuses received from the other nodes; and determining, by the at least one particular node, an identity of one or more resources of the one or more nodes whose resource status prevents the availability of the end-to-end path.