Cisco Certified Network Professional 2025 – 400 Free Practice Questions to Pass the Exam

A single mGRE (Multipoint Generic Routing Encapsulation) configuration represents a hub and spoke topology with mGRE at the center because mGRE allows for the creation of multiple GRE tunnels from a single physical interface. In this setup, the hub (often referred to as the center) is responsible for establishing tunnels to multiple spoke sites. Each spoke can communicate with the hub directly, and mGRE is particularly advantageous in scenarios where spokes may change frequently or where there might be a need for dynamic tunnel creation.

This configuration simplifies the management of multiple VPN connections, as it consolidates the routing necessary for multiple spokes into a single interface on the hub. By using mGRE, the hub can dynamically adjust to changes in spokes without the need to manually reconfigure each connection, providing scalability and reducing complexity.

In contrast, the other options do not accurately describe the nature of a single mGRE setup. For instance, a full mesh network implies that every node connects directly to every other node, which is not characteristic of a hub and spoke arrangement. Peer-to-peer connections suggest direct links between every pair of nodes, diverging from the central hub model. Lastly, while point-to-multipoint configurations can be established, the mention of encryption in that context does not