3Com 2928 User Guide - Page 185

Voice VLAN working mode Packet type Untagged packets Normal mode Packets carrying the voice VLAN tag Packets carrying other tags Packet processing mode The port does not check the source MAC addresses of inbound packets. All types of packets can be transmitted in the voice VLAN. Forwarded or dropped depending on whether the port allows packets of these VLANs to pass through Configuring the Voice VLAN Configuration Task List Before configuring the voice VLAN, you must create the corresponding VLAN and configure the link type of each port to be assigned to the VLAN. As VLAN 1 is the system-default VLAN, you do not need to create it; however, you cannot configure it as the voice VLAN. For information about port link types, refer to Port Management Configuration. Configuring voice VLAN on a port in automatic voice VLAN assignment mode Perform the tasks described in Table 1-4 to configure the voice VLAN function on a port working in automatic voice VLAN assignment mode. Table 1-4 Voice VLAN configuration task list for a port in automatic voice VLAN assignment mode Task Configuring Voice VLAN Globally Configuring Voice VLAN on a Port Adding OUI Addresses to the OUI List Remarks Optional Configure the voice VLAN to operate in security mode and configure the aging timer Required Configure the voice VLAN assignment mode of a port as automatic and enable the voice VLAN function on the port. By default, the voice VLAN assignment mode of a port is automatic, and the voice VLAN function is disabled on a port. Optional The system supports up to 16 OUI addresses. By default, the system is configured with seven OUI addresses, as shown in Table 1-1. Configuring voice VLAN on a port working in manual voice VLAN assignment mode Perform the tasks described in Table 1-5 to configure the voice VLAN function on a port working in manual voice VLAN assignment mode. 1-4