Overview of IPv6 RA
The routing switches covered by this guide support IPv6 RA configuration and transmission based on RFC 4861, “Neighbor Discovery for IP Version 6 (IPv6)” and RFC 4862, “IPv6 Stateless Address Autoconfiguration”.
IPv6 RAs on a VLAN provide the neighbor discovery policy the system administrator has configured for devices running in IPv6 host mode with address autoconfiguration enabled. RAs also enable hosts on a VLAN to build a list of default (reachable) routers on that VLAN.