Cisco Certified Network Associate (CCNA) Practice Exam

Which command displays EIGRP for IPv6 routers and their successor routes?

1. show ipv6 eigrp commands

2. show ipv6 eigrp neighbors

3. show ipv6 eigrp topology

4. show ipv6 protocols

The correct answer is: show ipv6 eigrp topology

The command that displays EIGRP for IPv6 routers and their successor routes is indeed the one that retrieves information about the EIGRP topology. When you use this command, it provides a detailed view of the routes that EIGRP has learned, including the successor routes, which are the best routes for forwarding packets to a destination. This command is crucial for troubleshooting and understanding the current state of EIGRP routes within the network. It allows network administrators to review the selected paths and the corresponding metrics used for route selection, helping them ensure optimal performance and identify any issues in the routing process. Other commands like those focused on neighbors or protocols provide specific subsets of information but do not give a comprehensive overview of the routes and topology associated with EIGRP for IPv6, which makes them less suitable for this particular inquiry. The command related to neighbors, for instance, focuses solely on the devices that are adjacent to the router in the EIGRP domain, lacking the broader context of the routing decisions being made.