500 CHAPTER 25: V OICE VLAN C ONFIGURATIONIt is recommended that you do not mix voice packets with other types of data in avoice VLAN. If necessary, please ensure that the security mode is disabled.Configuring the VoiceVLANConfigurationPrerequisites■ Create the corresponding VLAN before configuring the voice VLAN;■ As a default VLAN, VLAN 1 does not need to be created. However, it cannot beenabled with the voice VLAN feature.Configuring Voice VLANunder Automatic ModeFollow the following steps to configure the voice VLAN under automatic mode:n ■ The default VLAN of a port in automatic mode cannot be configured as voiceVLAN. Otherwise, the system will prompt error information.■ Issuing of the voice vlan security enable command and the undo voicevlan security enable command only takes effect before the voice VLANattribute is enabled globally.Configuring Voice VLANunder Manual ModeFollow the following steps to configure the voice VLAN under manual mode:To do... Use the command... RemarksEnter system view system-view -Configure the aging time ofthe voice VLANvoice vlan aging minutes OptionalOnly applicable to ports inautomatic mode and defaultsto 1,440 minutesEnable the security mode ofthe voice VLANvoice vlan security enable OptionalEnabled by defaultConfigure the OUI address forthe voice VLANvoice vlan mac-address ouimask oui-mask [ descriptiontext ]OptionalBy default, each voice VLANhas 8 default OUI addresses aslisted in Table 17.Enable the global voice VLANfeaturevoice vlan vlan-id enable RequiredEnter Ethernet interface view interface interface-typeinterface-number-Configure the working modeon a port as automaticvoice vlan mode auto OptionalAutomatic mode by defaultThe working mode of thevoice VLAN on each port isindependent of each other.Enable the voice VLAN featureon the interfacevoice vlan enable RequiredNot enabled by defaultTo do... Use the command... RemarksEnter system view system-view -Enable the security mode of avoice VLANvoice vlan security enable OptionalEnabled by default