Objective

The objective of this lab is to explore a scenario where routers anticipate a microloop in the network due to a change in topology and employ necessary microloop avoidance mechanisms to maintain a continuous flow of traffic, which would otherwise be impacted by the loops. This is accomplished through the following tasks:

1. Adjust the configuration to align with the depicted topology in the diagram.
2. Apply the configuration for microloop avoidance on P2.
3. Initiate a change in the network topology to trigger microloop avoidance.
4. Verify that a loop-free explicit SR-MPLS primary path from P2 to PE5 is computed and added into the Routing Information Base (RIB), Forwarding Information Base (FIB), and Label Forwarding Information Base (LFIB).

The topology shown in Figure 9.1 is used for the purpose of this lab.

Figure 9.1 – Microloop avoidance

The next section covers the configuration required to achieve this state as shown...