METHOD OF OPERATING A COMMUNICATION NETWORK AND NETWORK NODE

摘要

The invention relates to a method of operating a communication network (1) comprising a plurality of network nodes (2) and a plurality of optical network links (3). The method comprises: A) defining, in a network path within the communication network (1), a network path subsection, wherein the network path comprises a network path source node (S), a network path destination node (D), and at least two of the network links (3) connecting the network path source node (S) with the network path destination node (D), and wherein the net- work path subsection comprises a network path subsection starting node (5), a network path subsection ending node (6), and at least one of the network links (3) connecting the network path subsection starting node (5) and the network path subsection ending node (6), wherein the network path subsection starting node (5) is located closer to the network path source node (S) than the network path subsection ending node (6); B) determining the influence of the network links (3) between the network path subsection starting node (5) and the network path subsection ending node (6) on a quality of a signal propagating from the network path subsection ending node (6) to the network path subsection starting node (5); and C) determining whether the influence exceeds a predetermined threshold value, wherein, if it is determined that the influence does exceed the predetermined threshold value, configuring the node prior to the network path subsection ending node (6) to be perform signal regeneration.