Avoid microloops in IS-IS segment routing MPLS networks

You can enable post-convergence path calculation on a device to avoid microloops between network devices. Microloops form when a network change such as a link or metric change occurs in a segment routing MPLS network. A network change might trigger a loop between upstream and downstream routers for a brief time period because the routers do not update their forwarding state simultaneously. To configure microloop avoidance in a segment routing MPLS network, include the maximum-labels and the maximum-srv6-sids statements at the [edit protocols isis spf-options microlooop-avoidance post-convergence-path]hierarchy level.