Experimental testbed of reconfigurable flexgrid optical network with virtualized GMPLS control plane and autonomic controls towards SDN

This paper demonstrates a testbed of a reconfigurable optical network composed by four ROADMs equipped with flexgrid WSS modules, optical amplifiers, optical channel monitors, and supervisor boards. A controller daemon implements a node abstraction layer based in the YANG language, providing NETCONF and CLI interfaces. Additionally we demonstrate the virtualization of GMPLS control plane, while supporting automatic topology discovery and TE-Link instantiation, enabling a path towards SDN. GMPLS have been extended to collect specific DWDM measurement data allowing the implementation of adaptive/cognitive controls and policies for autonomic operation, based on global network view.