A node running LDP also supports point-to-multipoint LSP setup using LDP. By default, the node advertises the capability to a peer node using the point-to-multipoint capability TLV in LDP initialization message.
The multicast-traffic configuration option (per interface) restricts or allows the use of an interface for LDP multicast traffic forwarding toward a downstream node. The interface configuration option does not restrict or allow the exchange of the point-to-multipoint FEC by way of an established session to the peer on an interface, but only restricts or allows the use of next hops over the interface.