This controls the administrative intent for this circuit across three distinct states: disabled (no resources consumed at all), enabled (the device actively and continuously attempts to establish and maintain the circuit's path), and the more unusual enabledButNotUsed, where the transport segment and its bandwidth are reserved and established but traffic is deliberately blocked from actually passing. That third state is specifically useful for pre-provisioning a circuit's path and reserving its resources ahead of a planned cutover, without yet allowing live traffic to flow. For example, an admin migrating services to a new circuit might set it to enabledButNotUsed first to confirm the path establishes cleanly and reserve its bandwidth, then flip it to enabled only at the actual cutover moment.