The port identified by bridgeGroupMemberPortIndex becomes a member of the bridgeGroup identified by bridgeGroupMemberIndex when this object is set to true(1). The same port ceases to be member of that bridgeGroup when the object is set to false(2). All ports in the switch must belong to some bridge group. Consequently, the switch will return badValue if this object is used such to remove the port from all membership lists. Note that when bridgeGroupAllowMembershipOverlap is disabled, a port can only be member of exactly one bridge group. In this case, setting bridgeGroupMemberPortOfBridgeGroup to true(1) for a port adds the port to the membership list of the current bridge group and removes the same port from all other bridge group membership lists. When bridgeGroupAllowMembershipOverlap is enabled, a port may reside in multiple bridge groups. Setting bridgeGroupMemberPortOfBridgeGroup to true(1) in this case adds the port to the membership list of the current bridge group and does not change other bridge groups' membership list.