NG-MVPN can be configured using the CLI or SNMP on the PCCs.
The root node discovers all of the leaf nodes through NG-MVPN. The root and leaf nodes information is updated to the PCE using PCEP.
The PCE calculates the shortest path from the root to the leaf nodes and takes into account any programmed constraints. The PCE has an end-to-end view of the network through BGP LS.
After calculating the tree, the PCE downloads the P2MP policy to the root and the replication policies to the root, transit, and leaf nodes.
Updates to the P2MP policy or the replication paths are calculated by the PCE and downloaded accordingly.