3Com 4210G Series, Configuration Manual, Page: 155 / 1133

8-5
To do... Use the command... Remarks
Configure the port to operate in
automatic voice VLAN
assignment mode
voice vlan mode auto
Optional
Automatic voice VLAN
assignment mode is enabled
by default.
The voice VLAN assignment
modes on different ports are
independent of one another.
Enable voice VLAN on the port
voice vlan vlan-id enable
Required
Not enabled by default
z
An switch 4210G supports up to eight voice VLANs globally.
z
A protocol-based VLAN on a hybrid port can process only untagged inbound packets, whereas the
voice VLAN in automatic mode on a hybrid port can process only tagged voice traffic. Therefore,
do not configure a VLAN as both a protocol-based VLAN and a voice VLAN. For more information,
refer to
Protocol-Based VLAN Configuration .
z
Do not configure the default VLAN of a port in automatic voice VLAN assignment mode as the
voice VLAN.
Setting a Port to Operate in Manual Voice VLAN Assignment Mode
Follow these steps to set a port to operate in manual voice VLAN assignment mode:
To do... Use the command... Remarks
Enter system view
system-view
—
Enable the voice VLAN
security mode
voice vlan security enable
Optional
Enabled by default.
Add a recognizable OUI
address
voice vlan mac-address oui
mask oui-mask
[
description
text
]
Optional
By default, each voice VLAN
has default OUI addresses
configured. Refer to
Table 8-1
for the default OUI addresses
of different vendors.
Enter interface view
interface interface-type
interface-number
—
Configure the port to operate in
manual voice VLAN
assignment mode
undo voice vlan mode auto
Required
Disabled by default
Access port
Refer to Assigning an Access
Port to a VLAN .
Trunk port
Refer to Assigning a Trunk Port
to a VLAN .
Assign the
port in manual
voice VLAN
assignment
mode to the
voice VLAN
Hybrid port
Refer to Assigning a Hybrid
Port to a VLAN .
Use one of the three
approaches.
After you assign an access port
to the voice VLAN, the voice
VLAN becomes the default
VLAN of the port automatically.