MSDP Inter-working Spec describes how an intra-domain Anycast-RP-set interacts with MSDP external peering Stub Domains: Registers from DRs or Anycast-RPs are sent in SA messages (ala the MSDP spec) SAs from outside of the domain get forwarded by Anycast-RPs If not all Anycast-RPs are configured with external MSDP peering, then the ones that are need to build Registers and send them to the non-MSDP members of the Anycast-RP set |