Alcatel-Lucent Alcatel-Lucent Ericsson Ericsson Huawei Technologies Huawei Technologies ITU-T recommendation G.709-2012 has introduced new fixed and flexible Optical channel Data Unit (ODU) containers in Optical Transport Networks (OTNs). This document provides an evaluation of existing Generalized Multiprotocol Label Switching (GMPLS) routing and signaling protocols against the G.709 OTNs.