A true IPoDWDM solution is implemented only when the IP Routers and Switches support ITU-T G.709.
[1] In this way IP devices can monitor the optical path and implement the transport functionality as FEC (Forward Error Correction) specified by ITU-T G.709/Y.1331[1] or Super FEC functionality defined in ITU-T G.975.1.
[2] This approach saves network components including shelves, processors, interfaces cards and hence it permits to reduce the power consumption, OPEX (Operational expenditure) and CAPEX (capital expenditure).
This approach brings also a simplification of the network, eliminating the SDH/SONET intermediate layer.
[3] A DWDM network can be implemented using different vendor technology from the IP devices as long as they support alien wavelength transmission specified by ITU-T G.698.2.