RADIUS-assigned VLAN and VLAN:I-SID bindings provide greater flexibility and a more centralized assignment. The RADIUS server can dynamically assign VLANs or VLAN:I-SID bindings to a port.
Use VLAN attributes for RADIUS assignments in VLAN mode. This mode applies when the EAP-enabled port does not have Flex-UNI enabled.
Use VLAN:ISID attributes for RADIUS assignments in I-SID mode. This mode applies when the EAP-enabled port does have Flex-UNI enabled.
For more information, see RADIUS Attributes.