3Com WX3000 operation manual Port trunk permit vlan, Port hybrid vlan vlan-id, Tagged untagged

	To do…				Use the command…	Remarks
			Enter VLAN		vlan vlan-id
	Access		view
	port
			Add the port		port interface-list
			to the VLAN			Required
Add a			Enter port		interface interface-type	By default, all the ports belong
port in			view		interface-num	to VLAN 1.
manual					port trunk permit vlan
mode to
			Add the port		vlan-id
the
		to the VLAN			port hybrid vlan vlan-id
voice	Trunk or
VLAN	Hybrid			{ tagged untagged }
	port		Configure		port trunk pvid vlan	Optional
			the voice
			VLAN to be		vlan-id	Refer to Table 1-2 to determine
			the default		port hybrid pvid vlan	whether or not this operation is
			VLAN of the		vlan-id	needed.
			port

zThe voice VLAN function can be enabled for only one VLAN at one time.

zIf the Link Aggregation Control Protocol (LACP) is enabled on a port, voice VLAN feature cannot be enabled on it.

zVoice VLAN function can be enabled only for the static VLAN. A dynamic VLAN cannot be configured as a voice VLAN.

zWhen ACL number applied to a port reaches to its threshold, voice VLAN cannot be enabled on this port. You can use the display voice vlan error-infocommand to locate such ports.

zWhen a voice VLAN operates in security mode, the device in it permits only the packets whose source addresses are the identified voice OUI addresses. Packets whose source addresses cannot be identified, including certain authentication packets (such as 802.1x authentication packets), will be dropped. Therefore, you are suggested not to transmit both voice data and service data in a voice VLAN. If you have to do so, make sure that the voice VLAN does not operate in security mode.

zThe voice VLAN legacy feature realizes the communication between the WX3000 series devices and other vendor's voice devices by automatically adding the voice VLAN tag to the voice data coming from other vendors’ voice device. The voice vlan legacy command can be executed before voice VLAN is enabled globally and on a port, but it takes effect only after voice VLAN is enabled globally and on the port.

To add a Trunk port or a Hybrid port to the voice VLAN, refer to Basic Port Configurations of the 3Com WX3000 Series Unified Switches Switching Engines Command Manual for the related command.

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