When the bandwidth management system is enabled, traffic channel matching is implemented based on data information transferred through the IAG. The matching criteria include user group/user, IP address, application type, effective time, and destination IP address group. When a packet meets the criteria, a matching traffic channel is identified.

A piece of data can match only one traffic control policy. Traffic channels are matched from top to bottom. Therefore, channels with more detailed matching criteria must be placed high on the list. Traffic sub-channels are also matched from top to bottom. When a piece of data matches a parent channel, the parent channel policy will not be implemented immediately. Instead, the matching continues until a sub-channel is matched, and the sub-channel does not contain lower-level matching channels.