Configuring an 802.1X voice VLAN

You can configure an 802.1X voice VLAN on an 802.1X-enabled port that connects to a voice terminal. The 802.1X voice VLAN feature is effective only on voice terminals that support VLAN-tagged packets.

The 802.1X voice VLAN feature works with a remote authentication server. The device uses the following process to implement this feature:

  • Identifies a voice terminal from the packet sent by the authentication server when the terminal passes 802.1X authentication.

  • The authentication server identifies the terminal type by its OUI and sends the terminal type information to the device.

  • Assigns the port to the configured voice VLAN as a tagged member and sends the voice VLAN information through an LLDP or CDP packet to the terminal.

  • A voice terminal is not associated with a specific voice VLAN. The voice VLAN assigned to the voice terminal depends on the voice VLAN configuration on the access port.