vRtrPimNgStaticGroupMask 1.3.6.1.4.1.6527.3.1.2.50.1.8.1.5

The value of vRtrPimNgStaticGroupMask indicates the mask which is combined with vRtrPimNgStaticGroupAddr to get the range of multicast group addresses for which vRtrPimNgStGrptoRPRPAddress should be used by the router as the Rendezvous Point (RP).