What is a major advantage of a route-based VPN?

A major advantage of a route-based VPN is its flexibility in how traffic is routed. Unlike policy-based VPNs, which work based on predefined policies that dictate specific traffic flows, route-based VPNs utilize virtual tunnel interfaces (VTIs). This allows for the use of regular routing protocols to make dynamic routing decisions.

With a route-based VPN, administrators can leverage existing routing protocols (like OSPF or BGP) and make real-time adjustments to traffic flows based on current network conditions. This capability is particularly beneficial in complex networks where conditions might change frequently, enabling seamless rerouting and load balancing as needed. This flexibility enhances overall network resilience and adaptability, making route-based VPNs preferable for organizations with dynamic and diverse traffic needs.

Other options, while related to VPNs, do not capture this key aspect of flexibility and adaptability in route selection that route-based VPNs provide.