TI-LFA SRLG protection preference
The TI-LFA SRLG protection preference scenario is depicted in Figure 14.3.
Figure 14.3 – TI-LFA tiebreaker SRLG protection preference
As seen in the preceding figure, the topology is strategically designed to not offer all three TI-LFA path protections (link + node + SRLG) simultaneously.
Objective
The objective of this lab is to explore a scenario where the router requests TI-LFA to provide link (default) + node + SRLG protection. However, due to the absence of simultaneous protection and the nature of the topology, TI-LFA prefers SRLG protection. This objective is achieved through the tasks outlined here:
- Apply the required configuration to establish the topology as illustrated in Figure 14.3.
- Verify that TI-LFA backup path protection prioritizes SRLG protection.
Let’s dive in.
Configuration
Increase the metric on P9
toward P3
to ensure that neither the classic LFA nor the...