hpicfPimComponentCBSRHashMaskLength 1.3.6.1.4.1.11.2.14.11.5.1.20.1.1.7.1.4

Specifies the length (in bits) of a multicast group address to use when mapping a group to one of the candidate RPs from the RP-Set whose group-prefix includes the group. The recommended value for IPv4 is 30, for IPv6 is 126. Default is 30.