Keep in mind the following guidelines when configuring guest VLANs:
You must create a VLAN and configure it as a guest VLAN before enabling the guest VLAN feature.
Configure guest VLANs only on network login ports with 802.1x enabled .
Movement to guest VLANs is not supported on network login ports with MAC-based or web-based authentication.
802.1x must be the only authentication method enabled on the port for movement to guest VLAN.
No supplicant on the port has 802.1x capability.