Multipoint LDP to utilize distributed IGMP to signal an MPLS-based core has been added to Enhanced Subscriber Management

Junos OS support for multipoint LDP inband signaling to interwork with distributed IGMP has been added. As such, two separate PIM domains can be interconnected by an MPLS-based core (that is, a PIM-free core). One application of multipoint LDP inband signalling is to carry IPTV multicast traffic on an MPLS backbone. To enable the interworking, chassis network-services enhanced-ip must first be configured. Then you need to set the igmp or mld interface for distributed, and enable mldp-inband-signalling at the PIM hierarchy so PIM acts as a multipoint LDP inband edge router: [edit dynamic-profiles profile-name protocols igmp|mld interface layer 3 interface name distributed] [edit protocols pim mldp-inband-signalling] You can the run the show pim source command to confirm that distributed multipoint LDP is working (look for Upstream neighbor via MLDP-inband).