Routing Policy Specification Language
The Routing Policy Specification Language is a language commonly used by Internet Service Providers to describe their routing policies.
The routing policies are stored at various whois databases including RIPE, RADB and APNIC. ISPs then generate router configuration files that match their business and technical policies.
RFC 2622 describes RPSL, and replaced RIPE-181.
RFC 2650 provides a reference tutorial to using RPSL in practice to support IPv6 routing policies.
