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In automatic mode, the system uses the protocol packets sent by the IP phone. If the source MAC address of the packets matches the OUI address, the system will automatically add the ingress port of the voice packet to the voice VLAN, and then install the ACL rules of voice VLAN and implement the priority of the packet. If the source MAC address of the packets matches no OUI address, the system will learn the source MAC address of the LLDP, LLDP-MED or CDP packet as the learned OUI and add the port to the voice VLAN.
You can set the voice VLAN aging time on the device. During the aging time, if no voice packet is received from the ingress port, the system deletes the port from the voice VLAN. The process of adding/deleting a port to the voice VLAN is implemented automatically by the system.
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