Your question is Routing Protocol Convergence. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How do you handle routing protocol convergence in a large-scale network and what strategies prevent downtime during convergence? Explain how you would detect a failure, propagate and select replacement routes, and verify that forwarding has stabilized. Cover the operational trade-offs between faster convergence, control-plane load, route stability, and avoiding transient loops or blackholes. Scope your answer to production IP networks using BGP and an IGP such as OSPF or IS-IS, including AWS Direct Connect or AWS Transit Gateway where relevant.
