How do I configure multiple VLAN and stacked VLAN ranges?
You can configure multiple VLAN range groups (up to 32 total) on the same physical interface that uses different VLAN dynamic profiles. For more information, click Configuring an Interface to Use the Dynamic Profile Configured to Create Single-Tag VLANs
You can configure multiple dynamic profile associations (up to 32) with different VLAN range groups on each physical interface. For more information, click Configuring an Interface to Use the Dynamic Profile Configured to Create Stacked VLANs
You must configure the username-include statement to enable the use of authentication for VLAN or stacked VLAN ranges. The password (Interfaces) statement is not required and does not cause the interface to use authentication if the username-include statement is not included. For more information, click Configuring an Authentication Password for VLAN or Stacked VLAN Ranges
For more information, click Broadband Subscriber VLANs and Interfaces Feature Guide