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This step is required for untagged incoming voice traffic and prohibited for tagged incoming
voice traffic.
8. Enable the voice VLAN feature on the port.
voice-vlan vlan-id enable
By default, the voice VLAN feature is disabled.
Before you execute this command, make sure the specified VLAN already exists.
Enabling LLDP for automatic IP phone discovery
Restrictions and guidelines
• Before you enable this feature, enable LLDP both globally and on access ports.
• Use this feature only with the automatic voice VLAN assignment mode.
• Do not use this feature together with CDP compatibility.
• After you enable this feature on the device, each port of the device can be connected to a
maximum of five IP phones.
Procedure
1. Enter system view.
system-view
2. Enable LLDP for automatic IP phone discovery.
voice-vlan track lldp
By default, this feature is disabled.
Configuring LLDP or CDP to advertise a voice
VLAN
Configuring LLDP to advertise a voice VLAN
About configuring LLDP to advertise a voice VLAN
For IP phones that support LLDP, the device advertises the voice VLAN information to the IP phones
through the LLDP-MED TLVs.
Prerequisites
Before you configure this feature, enable LLDP both globally and on access ports.
Procedure
1. Enter system view.
system-view
2. Enter Layer 2 Ethernet interface view.
interface interface-type interface-number
3. Configure an advertised voice VLAN ID.
lldp tlv-enable med-tlv network-policy vlan-id
By default, no advertised voice VLAN ID is configured.
For more information about the command, see Layer 2—LAN Switching Command Reference.
4. (Optional.) Display the voice VLAN advertised by LLDP.
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