Considerations for Internet Routing Registries (IRRs) and Routing Policy Configuration
Resource Certification
Internet Routing Registry
IRR
Routing Policy Specification Language
RPSL
The purpose of this document is to catalog issues that influenced the efficacy of Internet Routing Registries (IRRs) for inter-domain routing policy specification and application in the global routing system over the past two decades. Additionally, it provides a discussion regarding which of these issues are still problematic in practice, and which are simply artifacts that are no longer applicable but continue to stifle inter-provider policy-based filtering adoption and IRR utility to this day.