Lab 10 – TI-LFA Local SRLG-Disjoint Protection
A Shared Risk Link Group (SRLG) denotes a set of links that share a common risk, potentially being physically routed along the same path with common transmission. This concept holds significance in the design and analysis of network resilience, as a failure within an SRLG can result in correlated impacts. If one link in the SRLG fails, it might lead to the failure of others in the group. In such a scenario, if the backup path of one link is routed along the primary path within the same SRLG, the backup would also fail when the primary path is affected.
In such cases, it is vital to guide the backup path away from SRLG links, ensuring SRLG protection.
The TI-LFA SRLG protection method in SR-MPLS networks can create a backup path upon request, mitigating potential issues associated with SRLG.
In the previous chapter, P2 requested node protection, and TI-LFA provided a post-convergence backup path by entirely omitting the...
