TI-LFA SRLG protection for IS-IS

You can configure Shared Risk Link Group (SRLG) protection in topology-independent loop free alternate (TI-LFA) networks. IS-IS computes the fast reroute path that is aligned with the post-convergence path and excludes the SRLG of the protected link. All local and remote links that share any SRLG with the protecting link are excluded. The point of local repair (PLR) sets up the label stack for the fast reroute path with a different outgoing interface. To enable TI-LFA SRLG protection with segment routing for IS-IS, include the srlg-protection statement at the [edit protocols isis interface name level number post-convergence-lfa] hierarchy level.