Network Service Layer Abstract Model

While the networking technologies have evolved over the years, the layered approach has been dominant in many network solutions. Each layer may have multiple interchangeable, competing alternatives that deliver a similar set of functionality. In order to provide an objective benchmarking data among various implementations, the need arises for a common abstract model for each network service layer, with a set of required and optional specifications in respective layers. Many overlay and or underlay solutions can be described using these models.