Answer
When static IGMP is used to join any group, multicast ping does not get any response because static IGMP is not a real IGMP host. Consequently, the ping fails. If Session Announcement Protocol (SAP) is used instead of static IGMP, multicast ping can be used if interface and bypass routing is specified. To do this, include the sap-listen statement at the [edit protocols] hierarchy level on the CE router on the main configuration (not under the routing-instance hierarchy):
set protocols sap-listen 239.10.10.14
For more information, click Layer 3 VPNs Feature Guide.