Patent ID: 9042395
Filing Date: 2015-05-26
Classification: H04L

Abstract:
1. A method of routing traffic through a packet network having physical nodes interconnected by physical links in a mesh physical topography, the method comprising: defining at least two types of network primitive, including: defining a network model encompassing at least a portion of the network, using at least one ring network primitive and at least two of the sub-ring network primitives, such that each physical node and physical link of the network is associated with a respective network primitive of the network model, and the respective virtual link of a first one of the sub-ring network primitives is mapped through at least another one of the sub-ring network primitives; computing respective forwarding information for each physical node of the network, based on the network model; and for each physical node of the network, installing the respective computed forwarding information in a forwarding database associated with the physical node, such that traffic is forwarded by each physical node of the network in accordance with the respective computed forwarding information; and restoring end-to-end connectivity using the respective virtual link of a given sub-ring network primitive following a network failure affecting traffic forwarding through a physical link of the network associated with the given sub-ring network primitive.