Huawei Huawei Orange Time-Variant Routing (TVR) is a routing system that can accommodate predicted topology changes caused by internal or external factors. Typical use cases include resource preservation networks, operating efficiency networks and dynamic reachability networks. This document provides examples of how to implement the TVR scheduling capabilities for key use cases. It describes which part of the TVR data model is used and why, and it outlines operational and security considerations when deploying TVR-based technologies.