H3C S5120-SI Series

2-6
To do... Use the command... Remarks
voice VLAN
Hybrid port
Refer to
Assigning a Hybrid
Port to a VLAN
.
VLAN becomes the default
VLAN of the port automatically.
Trunk port
Refer to section
Assigning a
Trunk Port to a VLAN
.
Configure the
voice VLAN
as the default
VLAN of the
port
Hybrid port
Refer to
Assigning a Hybrid
Port to a VLAN
.
Optional
This operation is required for
untagged inbound voice traffic
and prohibited for tagged
inbound voice traffic.
Enable voice VLAN on the port
voice vlan enable
Required
z You can configure different voice VLANs on different ports at the same time. However, one port
can be configured with only one voice VLAN, and this voice VLAN must be a static VLAN that
already exists on the device.
z Voice VLAN cannot be enabled on a port with Link Aggregation Control Protocol (LACP) enabled.
z To make voice VLAN take effect on a port that is enabled with voice VLAN and operates in manual
voice VLAN assignment mode, you need to assign the port to the voice VLAN manually.
Displaying and Maintaining Voice VLAN
To do... Use the command... Remarks
Display the voice VLAN state
display voice vlan state
Available in any view
Display the OUI addresses
currently supported by system
display voice vlan oui
Available in any view
Voice VLAN Configuration Examples
Automatic Voice VLAN Mode Configuration Example
Network requirements
As shown in Figure 2-1,
z The MAC address of IP phone A is 0011-1100-0001. The phone connects to a downstream device
named PC A whose MAC address is 0022-1100-0002 and to GigabitEthernet 1/0/1 on an upstream
device named Device A.
z The MAC address of IP phone B is 0011-2200-0001. The phone connects to a downstream device
named PC B whose MAC address is 0022-2200-0002 and to GigabitEthernet 1/0/2 on Device A.
z Device A uses voice VLAN 2 to transmit voice packets for IP phone A and voice VLAN 3 to transmit
voice packets for IP phone B.
Configure GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 to work in automatic voice VLAN
assignment mode. In addition, if one of them has not received any voice packet in 30 minutes, the port
is removed from the corresponding voice VLAN automatically.