What does 'Passive' indicate in the EIGRP topology table?

In the context of the EIGRP topology table, the term 'Passive' indicates that no changes have occurred in the network. This state reflects stability in the routing environment, meaning that the EIGRP process has not detected any new changes that would warrant updates to the topology database. When routes are in a passive state, it signifies that the transitions and queries for those paths have completed successfully, and EIGRP has determined that the routing paths are stable and operational.

In contrast, other states in the topology table would indicate different conditions, such as active queries being sent to gather information about routes or routing information being unavailable or lost due to unreachable neighbors. Therefore, understanding the passive state helps network engineers assess the stability and performance of the EIGRP routing process.