Source Address Validation at the Intra-domain Network Boundary Using IGP

SPA-based SAVNET is a new intra-domain source address validation (SAV) mechanism which requires exchanging and communicating SPA information among routers in an intra-domain network (see [I-D.li-savnet-source-prefix-advertisement]). Routers at the boundary automatically generate accurate SAV rules by using routing information and SPA information. These rules construct a validation boundary which checks the validity of the source address of any data packets flowing into the intra-domain network. This document describes a method to implement SPA-based SAVNET by using OSPF and IS-IS.