Cisco ENCOR Practice Exam 2025 – All-in-One Comprehensive Guide to Mastering Enterprise Network Core Technologies!

In EIGRP (Enhanced Interior Gateway Routing Protocol), the Hello interval refers to the frequency at which EIGRP routers send Hello packets to establish and maintain neighbor relationships. For high-speed links, the default Hello interval is set to 5 seconds. This interval allows for quicker detection of neighbor reachability changes and promotes faster convergence in the network.

Choosing a shorter Hello interval like 5 seconds is particularly advantageous for high-speed links because it ensures that the routers can promptly respond to any topology changes or failures. This rapid communication helps maintain accurate routing information and improves the overall stability and performance of the network.

The other intervals listed—15 seconds, 30 seconds, and 60 seconds—are typically used in different contexts or configurations, such as slower links or specific administrative adjustments, but they do not apply to the standard default setting for high-speed links in EIGRP.