Cisco Certified Network Associate (CCNA) Practice Exam

Which command would verify EIGRP for IPv6 neighborships?

1. #show eigrp neighbors

2. #show ipv6 protocols

3. #debug eigrp packets

4. #debug eigrp notifications

The correct answer is: #show eigrp neighbors

The command to verify EIGRP for IPv6 neighborships is the one that displays the status of the neighboring devices that are participating in the EIGRP routing process. EIGRP uses a neighbor table to maintain information about directly connected EIGRP peers. The specific command that provides the necessary details about these neighbors, including their IPv6 addresses, the state of the relationship, and various timing information (like hold time and uptime), is critical for troubleshooting and ensuring network connectivity. In the case of EIGRP for IPv6, the command to check for neighbor relationships focuses on its specific implementation, which is reflected in the command output. It allows network engineers to confirm that adjacent routers have successfully formed a neighbor relationship and are able to exchange EIGRP packets. The other commands, while useful in their own right, do not specifically address EIGRP neighborships. They provide broader information or different types of data. For instance, the command to show IPv6 protocols gives an overview of the routing protocols configured but does not detail neighbors. Debug commands are typically used for real-time monitoring of protocols but do not efficiently summarize existing neighbor relationships.