Objective

The objective of this lab is to explore a scenario where TI-LFA is configured to provide SRLG protection. This involves instructing the Point of Local Repair (PLR) router to calculate and install a fast reroute path to be used in the event of a link failure, aiming to avoid not only the failed link but also others that share the same risk of failure. The local SRLG-disjoint protection is accomplished using the following tasks:

1. Inform router P2 about its local SRLGs.
2. Apply the configuration to enable TI-LFA SRLG protection on P2.
3. Verify that the local SRLG protection backup path is computed and added to the RIB, FIB, and LFIB of P2.

The task begins by first identifying the shared risks in the network with the help of the transmission team. Once this is done, each SRLG is allocated a unique identity and configured on the routers.

The SRLGs in this case, as explored in this lab, are local SRLGs. This means they are only locally significant to the PLR...