Refer to the exhibit. Company ABC is a Tier 3 service provider that offers Layer 2 and Layer 3 transport for small/medium enterprise customers in the US. Most of their network is built on Layer 2 MPLS

Migrating customers to Company ABC's L3 VPN does not change the underlying Layer 2 transport topology, so convergence problems caused by Tier 1 outages would persist.

Fine-tuning routing protocol timers is a short-term mitigation that reduces convergence time but does not eliminate the outage impact or add redundancy to the network design.

Replacing MPLS circuits with dark fiber is expensive, geographically constrained, and does not inherently provide redundancy unless paired with a topology change like full-mesh connectivity.

Full-mesh POP connectivity ensures every Company ABC Point of Presence has a direct path to every other POP, so a single Tier 1 provider link or node failure does not isolate any segment of the network. This topological redundancy is a long-term architectural change that directly addresses the root cause - lack of alternate paths in the transport layer. Customers' overlay VPNs and routing protocols will converge faster because alternate physical paths exist without waiting for the Tier 1 provider to restore its core.