H3C Technologies H3C S5120 Series Switches - Manual (Page 161)

2-8
Voice VLAN Configuration Examples
Automatic Voice VLAN Mode Configuration Example
Network requirements
As shown in Figure 2-3 ,
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.
Figure 2-3 Network diagram for automatic voice VLAN assignment mode configuration
Device A Device B
GE1/0/1
IP phone B
010-1002
MAC: 0011-2200-0001
Mask: ffff-ff00-0000
0755-2002
GE1/0/2
Internet
PC B
MAC: 0022-2200-0002
VLAN 3
Configuration procedure
# Create VLAN 3.
system-view
[DeviceA] vlan 3
# Set the voice VLAN aging time to 30 minutes.
[DeviceA] voice vlan aging 30
# Since GigabitEthernet 1/0/2 may receive both voice traffic and data traffic at the same time, to ensure
the quality of voice packets and effective bandwidth use, configure voice VLANs to work in security
mode, that is, configure the voice VLANs to transmit only voice packets. (Optional. By default, voice
VLANs work in security mode.)
[DeviceA] voice vlan security enable