Abstract: A method and apparatus for automatic downloading and updating of network element software profile files (SPF's) and network element module software images. Embodiments of the invention provide a software routine and system which is executable through the network management system. The utilization of the software routine allows for updating SPF's and software images in the NCP and other modules within the network, while minimizing the interruptions in the data flow. This is accomplished by utilizing a primary and secondary SPF. The updated profile is downloaded as the secondary SPF and secondary images are reconciled with the new secondary SPF. This same operation is then performed with other modules in the network. Upon reconciliation of SPF and software images, the secondary SPF and software images are switched with the primary SPF and software images within the NCP and modules, thereby updating the entire system.

Abstract: A technique in accordance with the present invention provides a systematic approach to find a sub-optimum channel plan with reasonable computational time. In each step, this technique allocates channels to minimize the FWM crosstalk in terms of fiber characteristics, while selecting as many channels as possible to increase the bandwidth efficiency.