Flexible Algorithm with OSPF

This feature introduces thin network topology slicing by defining flexible algorithms for OSPF that compute paths using different parameters and link constraints based on the requirements. For example, you can define a flexible algorithm that computes a path to minimize the IGP metric and define another flexible algorithm to compute a path based on the traffic engineering metric to divide the network into separate planes. This feature allows networks without a controller to configure traffic engineering using segment routing without actually implementing a network controller. You can use the prefix SIDs to steer packets along the constraint-based paths. You can configure the prefix SIDs for the flexible algorithm through policy configurations.