This tutorial introduces the Internet Routing Registry (IRR) and the Routing Policy Specification Language (RPSL). We explain how to register and query routing policy objects in the IRR. After a brief introduction to routing policies, we discuss RPSL, the new IETF-proposed standard language for specifying Internet routing policies. RPSL is currently being deployed by IRR participants and will replace RIPE-181, the current IRR routing policy specification language. RPSL provides substantial extensions to RIPE-181, making it possible to specify a much richer set of routing policies in a more concise manner. In addition, we present and demonstrate several IRR policy analysis tools, including RtConfig to configure routers, and roe to reconcile route objects with actual routes in the Internet.

About the Presenter
Cengiz Alaettinoglu works on the Routing Arbiter project at the USC Information Sciences Institute. He co-chairs the IETF Routing Policy System WG, which defined the Routing Policy Specification Language along with the protocols to enable a distributed, secure routing policy system.