Which event occurs when a software-defined networking (SDN) controller experiences a sudden loss of connectivity to managed switches?

💡 Explanation

When SDN controller connectivity is lost, the managed switches lose centralized control, triggering a fallback to pre-programmed static routing because the dynamic routing updates cease. Therefore switches revert to static routing, rather than broadcast storms, policy enforcement, or automatic failover which require functional control plane communication or redundancy mechanisms.

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