Flexible algorithm in IS-IS for segment routing-traffic engineering

You can thin slice a network by defining flexible algorithms that compute paths using different parameters and link constraints based on your requirements. For example, you can define a flexible algorithm that computes a path to minimize IGP metric and define another flexible algorithm to compute a path based on SPF calculation type to divide the network into separate planes. This feature allows networks without a controller to configure traffic engineering and utilize segment routing capability of a device. To define a flexible algorithm, include flex-algorithm statement at the [edit routing-options] hierarchy level. To configure participation in a flexible algorithm include the flex-algorithm statement at the [edit protocols isis segment routing] hierarchy level