You must enable IPv6 Shortcuts.
You must configure the required SPBM IS-IS infrastructure.
You must configure a VRF and IPv6 VPN instance on the switch. For more information, see VRF Lite configuration using Enterprise Device Manager.
After you have configured the SPBM infrastructure, you can enable SPBM Layer 3 Virtual Services Network (VSN) to advertise IPv6 routes across the SPBM network from one VRF to another using the following procedure.
SPBM Layer 3 VSN uses IS-IS to exchange the routing information for each VRF.