Patent ID: 8125930
Filing Date: 2012-02-28
Classification: H04J,H04L

Abstract:
1. In a network in which information about nodal adjacency and nodal clock quality level are available, a method for configuring and maintaining network clock distribution infrastructure comprising the steps of: selecting, from among a plurality of candidate Primary Reference Clocks (PRCs), a root node; creating, by the root node, an eligibility matrix of elements that do not violate clock sourcing hierarchy constraints; deriving, by the root node, a clock distribution tree topology indicative of clock sourcing for a plurality of nodes from the eligibility matrix; detecting, by the root node, a network topology change; calculating, by the root node, a new clock distribution path for a node affected by the network topology change, the calculating step being based at least in-part on the clock distribution tree topology; and signaling, by the root node to the affected node, an indication of the new clock distribution path.