Operation Manual – Voice VLANH3C S5600 Series Ethernet Switches Chapter 1 Voice VLAN Configuration1-11Caution:z The voice VLAN function can be enabled for only one VLAN at one time.z If the Link Aggregation Control Protocol (LACP) is enabled on a port, voice VLANfeature cannot be enabled on it.z Voice VLAN function can be enabled only for the static VLAN. A dynamic VLANcannot be configured as a voice VLAN.z When ACL number applied to a port reaches to its threshold, voice VLAN cannot beenabled on this port. You can use the display voice vlan error-info command tolocate such ports.z When a voice VLAN operates in security mode, the device in it permits only thepackets whose source addresses are the identified voice OUI addresses. Packetswhose source addresses cannot be identified, including certain authenticationpackets (such as 802.1x authentication packets), will be dropped. Therefore, youare suggested not to transmit both voice data and service data in a voice VLAN. Ifyou have to do so, make sure that the voice VLAN does not operate in securitymode.z The voice VLAN legacy feature realizes the communication between H3C deviceand other vendor's voice device by automatically adding the voice VLAN tag to thevoice data coming from other vendors’ voice device. The voice vlan legacycommand can be executed before voice VLAN is enabled globally and on a port, butit takes effect only after voice VLAN is enabled globally and on the port.Note:To assign a trunk port or a hybrid port to the voice VLAN, refer to VLAN Configuration ofthis manual for the related command.1.3 Displaying and Maintaining Voice VLANTo do… Use the command… RemarksDisplay information about the ports on whichvoice VLAN configuration failsdisplay voice vlanerror-infodisplay voice vlanstatusDisplay the voice VLAN configuration statusDisplay the OUI list display voice vlan ouiIn anyviewDisplay the ports operating in the voice VLAN display vlan vlan-id
