Subnet Route Leak Guard

Subnet Route Leak Guard is a networking routing control that detects and blocks accidental route propagation for address segmentation. It uses prefix filters, validation, and peer policy so teams can protect reachability while keeping evidence, reliability, and public-safe operational boundaries clear.

“The network engineering team used Subnet Route Leak Guard when a workload moved networks, so the team could protect reachability before traffic crossed a service boundary.”