Next-generation MVPN Inter-AS option B

Junos OS supports improved security and scalability, Juniper supports Rosen Inter-AS option B for next-generation multicast virtual private networks (MVPNs) and segmented provider tunnels. Only specific configurations are supported, so for example, static tunnels (such as RSVP-TE and IR) are not supported, nor are PIM any-source multicast (ASM) and PIM source-specific multicast (SSM) tunnels. In the supported configuration, next-generation MVPN sites can span multiple autonomous system (AS) boundaries (that is, domains). Each AS can implement its own p-tunnel (they don't have to be the same). Per-VPN subinterfaces are not shared between ASBRs. Likewise, provider edge (PE) routers from one AS cannot be reached from another AS, and the AS topology of one site is not exposed to any others.