H3C Technologies H3C S7500E Series Switches - Manual (Page 254)

18-8
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 .
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 18-1 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.
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.