When the service is configured as VLANPool1, if the user fails to obtain an IP address within a certain period of time and the dhcp update vlan assignmentthreshold reaches a certain value, VLANPool1…

When the service is configured as VLANPool1, if the user fails to obtain an IP address within a certain period of time and the dhcp update vlan assignmentthreshold reaches a certain value, VLANPool1 will be triggered to assign a new VLAN to the user, so that the user can obtain an IP again in the new VLAN address.