vRtrPimNgERPGrpPrefixGrpAddr 1.3.6.1.4.1.6527.3.1.2.50.1.31.1.2

The value of vRtrPimNgERPGrpPrefixGrpAddr combined with the value of vRtrPimNgERPGrpPrefixGrpMask indicates the range of multicast group addresses for which RP address information can be embedded.