Implement RPKI-based BGP route origin validation by creating Route Origin Authorizations (ROAs) at RIRs (ARIN, RIPE, APNIC, AFRINIC, LACNIC), deploying validator software (Routinator, FORT, OctoRPKI), and configuring RPKI-to-Router protocol and ROV accept/reject policies on Cisco IOS-XE and Juniper Junos routers. Use when hardening BGP against route hijacking or leaks, or when configuring ROV filtering policy on production routers.