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Hierarchy Level


Configure backup paths along post-convergence on this interface.



Enable fate-sharing protection. A list of fate-sharing groups are configured on each point of local repair (PLR) with the links in each fate-sharing group identified by their respective IP addresses. The PLR associates a cost with each fate-sharing group. The fate-sharing-aware post-convergence path is computed by assuming that the cost of each link in the same fate-sharing group as the failed link has increased the cost associated with that group.


Enable Shared Risk Link Group (SRLG) protection in an IS-IS network if you want IS-IS to choose a fast reroute path that does not include SRLG links in the topology-independent loop-free alternate (TI-LFA) backup paths. If you have configured fate-sharing-protection in addition to srlg-protection then both costs are added to the link metric to calculate the final TI-LFA backup path. These links have a higher metric cost and therefore TI-LFA backup computation enables IS-IS to avoid these links.

The remaining statements are explained separately. Search for a statement in CLI Explorer or click a linked statement in the Syntax section for details.

Required Privilege Level


Release Information

Statement introduced in Junos OS Release 17.4R1.

srlg-protection option introduced in Junos OS release 20.2R1 for MX Series and PTX Series.