1-7To do... Use the command... RemarksConfigure the interface to trust theQoS priority settings in incomingvoice traffic, that is, not to modifythe CoS and DSCP values markedfor incoming traffic of the voiceVLANvoice vlan qos trustConfigure the interface to modifythe CoS and DSCP values markedfor incoming traffic of the voiceVLAN into specified valuesvoice vlan qos cos-valuedscp-valueRequiredUse either commandBy default, an interface modifies theCoS value and the DSCP valuemarked for voice VLAN traffic into 6and 46 respectively.The voice vlan qos command andthe voice vlan qos trust commandcan overwrite each other, whicheveris configured last.Configure the QoS priority settings for voice traffic on an interface before enabling voice VLAN on theinterface. If the configuration order is reversed, your priority trust setting will fail.Configuring the Voice VLAN to Operate in Automatic Voice VLAN Assignment ModeFollow these steps to configure a voice VLAN to operate in automatic voice VLAN assignment mode:To do… Use the command… RemarksEnter system view system-view —Set an OUI address that can beidentified by the voice VLANvoice vlan mac-address ouimask oui-mask [ description text ]OptionalBy default, the switch determinesthe voice traffic according to thedefault OUI address.Enable the voice VLAN securitymode voice vlan security enableOptionalBy default, the voice VLAN securitymode is enabled.Set the voice VLAN aging timer voice vlan aging minutesOptionalThe default aging timer is 1440minutes.Enable the voice VLAN functionglobally voice vlan vlan-id enable RequiredEnter Ethernet port view interface interface-typeinterface-number RequiredEnable the voice VLAN function ona port voice vlan enable RequiredBy default, voice VLAN is disabled.Enable the voice VLAN legacyfunction on the port voice vlan legacyOptionalBy default, voice VLAN legacy isdisabled.Set the voice VLAN assignmentmode of the port to automatic voice vlan mode autoOptionalThe default voice VLANassignment mode on a port isautomatic.
