Cisco Certified Network Associate (CCNA) Practice Exam

Which command is used to configure a static EIGRP neighbor?

1. router eigrp AS NUMBER static

2. router eigrp AS NUMBER neighbor REMOTE IP ADDRESS local interface

3. eigrp neighbor REMOTE IP ADDRESS

4. enable eigrp neighbor

The correct answer is: router eigrp AS NUMBER neighbor REMOTE IP ADDRESS local interface

The command that is used to configure a static EIGRP neighbor is the one that specifies the Autonomous System (AS) number, the remote IP address, and the local interface. This command allows the router to form a neighbor relationship with a specific device on the network, ensuring that EIGRP updates are sent and received correctly, even if those routers are not directly connected to each other. In EIGRP, neighbors are typically discovered automatically through multicast. However, in some situations, such as when a direct connection is not present, or to control the neighbor relationships in a more granular manner, the static neighbor command is necessary. By configuring the EIGRP neighbor statically, you can define the relationship explicitly, which contributes to network stability and predictability. The command requires the AS number to identify the routing domain, the IP address of the remote neighbor, and the local interface that will be used for sending EIGRP packets. This level of specificity is crucial in ensuring that EIGRP operates effectively in more complex network topologies.