It means to modify the mask corresponding to the traffic stream attribute. Currently, multiple traffic stream attributes can be modified at a time. The description for each BIT of the reported traffic stream attribute mask is as follows. tagRuleChanged(0) -indicates to modify the VLAN tag transforming mode of the traffic stream. adminStatusChanged(1) -indicates to modify the administration status of the traffic stream. inboundIndexChanged(2) -indicates to modify the index of the inbound traffic profile referenced by the traffic stream. outboundIindexChanged(3) -indicates to modify the index of the outbound traffic profile referenced by the traffic stream. inboundNameChanged(4) -indicates to modify the name of the inbound traffic profile referenced by the traffic stream. outboundNameChanged(5) -indicates to modify the name of the outbound traffic profile referenced by the traffic stream. upInnerVlanChanged(6) -indicates to modify the network inner VLAN tag of the traffic stream. upInnerPriorityChanged(7) -indicates to modify the inner VLAN priority of the traffic stream. macLearnChanged(8) -indicates to modify the maximum number of learnable dynamic MAC addresses of the traffic stream. descriptionChanged(9) -indicates to modify the description of the traffic stream. remoteDescriptionChanged(10) -indicates to modify the remote description of the traffic stream. ontPortlistChanged(11) -indicates to modify the ONT port list of the traffic stream. The mask has 32 bits in total. Note that in a byte, the high bit indicates a small attribute value. For example, if bit 1 is set to 1, this bit indicates adminStatusChanged. | bit0-bit11 | bit12-bit31 | | tagRuleChanged(0)