Chen,
my confusion is: For example, deviceA and device B both have 10 cluster IDs, ID0-ID3 are for taskID1, ID4-ID6 are for taskID2, ID7-9 are for taskID3, if all of the cluster IDs are bind once together, and device B send message which uses cluster ID5 to device A, how does device A distinguish cluster ID5 and let taskID2 process it.