Final answer:
The "passive-interface" command is not applicable to EIGRP. It has a different meaning in EIGRP and using it on EIGRP interfaces may cause issues.
Step-by-step explanation:
The command "passive-interface" is not applicable to the EIGRP protocol. In EIGRP, there is no need to use the passive-interface command because EIGRP uses a different approach to control routing updates. EIGRP routers dynamically advertise their routing information to their neighbors, so there is no need to manually configure passive interfaces like in other routing protocols such as OSPF or RIP.
This command has a different meaning in EIGRP compared to other protocols. In EIGRP, the "passive-interface" command is used to control whether EIGRP should form neighbor adjacencies on an interface or not, by default all interfaces participate in forming neighbor relationships in EIGRP.
If you were to use the "passive-interface" command on an EIGRP interface, it may cause issues such as preventing EIGRP neighbors from forming adjacencies and exchanging routing updates, leading to a loss of connectivity in the network