https://www.juniper.net/documentation/us/en/software/junos/subscriber-mgmt-vlan/topics/concept/mlppp-mx-series-supported-feature.html
Supported Features for MLPPP LNS and PPPoE Subscribers | Junos OS | Juniper Networks
Subscribers to multilink PPP (MLPPP) for L2TP network server (LNS) or to Point-to-Point Protocol over Ethernet (PPPoE, terminated and tunneled) can access a...
junos osjuniper networkssupportedfeaturesmlppp