[ no ] ip block-multicast-sources
Command introduced before JUNOSe Release
Profile Configuration mode added in JUNOSe Release 8.1.0.
Prevents mroute creation by blocking multicast traffic that has a scope larger than link-local (for example, global). In Profile Configuration mode, blocks multicast sources per user on dynamic IP interfaces. The no version restores the default behavior of creating mroutes upon receiving multicast packets.
Interface Configuration, Profile Configuration