An S-PMSI tunnel connects some PEs in the same MVPN and is used to transmit VPN data only to the PEs that require the data. To enable the S-PMSI tunnel function, perform this task.
If multicast listener discovery (MLD) is enabled on a multicast device's interface connecting to a user network segment, multicast group members on the local network can be managed. According to the service plan, you can enable MLD on a VPN site's CE connected to a receiver PE or on the receiver PE. Perform this task for the latter case.
In an MVPNv6 over BIERv6 scenario, if a node or link fails, multicast services can be restored only after BGP peer convergence is complete. However, such convergence takes a long time and therefore cannot meet the high reliability requirements of multicast services. To speed up BGP convergence, which in turn accelerates multicast service convergence, you can configure BFD for BGP. You can also deploy the dual-root 1+1 protection solution, which further improves the performance of multicast service convergence.
This section describes how to configure upstream multicast hop (UMH) route selection rules on receiver PEs on an IPv6 NG MVPN, so that the receiver PEs can select the same sender PE as their root node during VPN route selection.