Here is some basic syntax to remember regarding RIPng configuration, with some comments in parentheses.
ipv6 unicast routing (enables IPv6 on the device)
ipv6 router rip <name> (enables RIP on the device)
ipv6 rip <name> enable (applies the RIP named process to an interface)
show ipv6 interface brief (like the IPv4 command)
show ipv6 protocols (show IPv6 protocol information)
show ipv6 route (show IPv6 routing table)
ipv6 rip <name> default-information originate (from interface configuration mode, advertise the default ::/0 route in addition to other routes; the default route does not have to be present in the advertising device’s routing table to do this)
ipv6 rip <name> default-information only (advertise ONLY the default ::/0 route)
Stuck-in-Active: Journal of an IT-Network Administrator 