The new 40-channel single-module ROADM with integrated optical pre-amplifier (part number 40-SMR1-C) combines the OSC add/drop filter, a pre-amplifier, and a 2x1 wavelength selective switch (WSS)-based ROADM core into a single-slot unit. This unit is optimized for Degree-2 reconfigurable nodes. The 40-channel single-module ROADM with integrated optical pre-amplifier and boost amplifier (part number 40-SMR2-C) includes the OSC add/drop filter, pre- and boost amplifiers, and a 4x1 WSS-based ROADM core. This unit provides an effective way to support multi-degree nodes up to Degree-4, allowing in-service upgrade from Degree-2 up to Degree-4 at a very competitive price point. Similarly to the already available 40-channel wavelength cross-connect (40-WXC) card, and thanks to the software functionalities extended from previous releases, the 40-SMR2-C card provides multi-degree switching capabilities at the individual wavelength level. Mesh and multi-ring network topologies can now be deployed using the Cisco ONS 15454 MSTP with complete flexibility of service routing at all nodes in the network. Individual channels separation, required on the add/drop ports to terminate local traffic, is provided by the new Cisco ONS 15216 40-channel multiplexer/demultiplexer patch panel (odd channels). The use of athermal Arrayed Waveguide Grating (AWG) technology allows the removal of the multiplexer and demultiplexer function from the Cisco ONS 15454 MSTP shelf. This approach provides many benefits to customers, including: Simplified connectivity to passive patch-panels: 4 LC cables instead of 20 MPO cables. Improved density: passive multiplexing and demultiplexing frees up slots in the main chassis to be used for traffi