Patent ID: 9735912
Date: 2017-08-15
CPC Classifications: H04J,H04L,H04Q

Claim:
1. A method for routing traffic in a reconfigurable optical add-drop multiplexer layer of a dense wavelength division multiplexing network, the method comprising: determining, by a processor, the reconfigurable optical add-drop multiplexer layer has asymmetric traffic; and routing, by the processor, the asymmetric traffic in the reconfigurable optical add-drop multiplexer layer over a plurality of asymmetrical optical connections, wherein the plurality of asymmetrical optical connections is provided with only uni-directional equipment in the reconfigurable optical add-drop multiplexer layer, wherein the routing comprises changing a route of the asymmetric traffic in one direction from travelling directly from an internet protocol layer to the reconfigurable optical add-drop multiplexer layer by by-passing an optical transport network layer to travelling from the internet protocol layer to the reconfigurable optical add-drop multiplexer layer via the optical transport network layer, wherein the uni-directional equipment is for replacing bi-directional equipment, wherein the replacing comprises: