JN0-650: Enterprise Routing and Switching, Professional (JNCIP-ENT)

The inet.2 table provides unicast routes for multicast reverse-path-forwarding (RPF) lookups, allowing multicast routing to use a topology independent of normal unicast forwarding. PIM uses inet.0 for RPF checks by default. inet.1 is the IPv4 multicast forwarding cache, not the direct route table for MP-BGP or IS-IS multicast routes; OSPFv3 uses IPv6 routing tables rather than IPv4 inet.2.