H3C S5120-SI series Configuration Manual page 133

Voice VLAN
Port link type assignment
mode
Manual
Automatic
Hybrid
Manual
IP phones send untagged voice traffic
•
When IP phones send untagged voice traffic, you can only configure the voice traffic receiving ports on
the device to operate in manual voice VLAN assignment mode.
Table 16 Required configurations on ports of different links types in order for the ports to support
tagged voice traffic
Voice VLAN
Port link type
assignment
mode
Automatic
Access
Manual
Automatic
Trunk
Manual
Automatic
Hybrid
Manual
CAUTION:
If an IP phone sends tagged voice traffic and its accessing port is configured with 802.1X authentication
•
and guest VLAN, you should assign different VLAN IDs for the voice VLAN, the default VLAN of the
connecting port, and the 802.1X guest VLAN.
If an IP phone sends untagged voice traffic, to implement the voice VLAN feature, you must configure the
•
default VLAN of the IP phone's accessing port as the voice VLAN. As a result, 802.1X authentication
cannot be implemented.
Support for
tagged voice Configuration requirements
traffic
Make all the configurations required for the
automatic mode. In addition, assign the port to
the voice VLAN.
Configure the default VLAN of the port, which
cannot be the voice VLAN, and configure the
port to permit packets of its default VLAN to pass
through untagged.
Yes
Make all the configurations required for the
automatic mode. In addition, configure the port
to permit packets of the voice VLAN to pass
through tagged.
Support for
untagged voice Configuration requirements
traffic
No —
Configure the default VLAN of the port as the
Yes
voice VLAN.
No —
Configure the default VLAN of the port as the
Yes voice VLAN and assign the port to the voice
VLAN.
No —
Configure the default VLAN of the port as the
voice VLAN and configure the port to permit
Yes
packets of the voice VLAN to pass through
untagged.
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