A recursive static route specifies a destination network and only the next-hop IP address. The router performs one lookup for that next hop and another to find its forwarding interface. section 9.3.1 section 9.4
For example, R1 can route 192.168.3.0/24 through 192.168.12.2. R1 first matches the destination route, then matches the connected 192.168.12.0/24 network to select GigabitEthernet0/0. IPv4 forwarding then requires ARP to learn the next hop’s MAC address. section 9.3.1
Configure recursive static routes with the destination and next-hop address:
- IPv4: ip route destination-network netmask next-hop section 9.3.1
- IPv6: ipv6 route destination-prefix next-hop, using slash notation such as /64. section 21.3.1
IPv6 recursive route on R2
R2(config)# ipv6 route 2001:db8:3::/64 2001:db8:23::2. The static route identifies the next hop; R2’s connected route for 2001:DB8:23::/64 resolves that address to GigabitEthernet0/1.
