H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 119)

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TIP:
H3C does not recommend you transmit both voice traffic and non-voice traffic in a voice VLAN. If you
have to, ensure that the voice VLAN security mode is disabled.
Table 17 How a voice VLAN-enabled port processes packets in security/normal mode
Voice VLAN
mode
Packet type Packet processing mode
Security mode
Untagged packets
If the source MAC address of a packet matches an OUI
address configured for the device, it is forwarded in the voice
VLAN; otherwise, it is dropped.
Packets carrying the
voice VLAN tag
Packets carrying other
tags Forwarded or dropped depending on whether the port allows
packets of these VLANs to pass through
Normal mode
Untagged packets
The port does not check the source MAC addresses of inbound
packets. In this way, both voice traffic and non-voice traffic
can be transmitted in the voice VLAN.
Packets carrying the
voice VLAN tag
Packets carrying other
tags Forwarded or dropped depending on whether the port allows
packets of these VLANs to pass through
Configuring a voice VLAN
Configuration prerequisites
Before you configure a voice VLAN, complete the following tasks:
• Create a VLAN.
• Configure QoS priority settings for voice VLAN traffic on an interface before enabling voice VLAN
on the interface.
If the configuration order is reversed, your priority configuration will fail. For more information, see
“ Configuring QoS priority settings for voice traffic on an interface .”
• Configure the voice VLAN assignment mode.
For more information, see “ Configuring a port to operate in automatic voice VLAN assignment
mode “ and “ Configuring a port to operate in manual voice VLAN assignment mode .”
NOTE:
•
A port can be configured with only one voice VLAN.
• You cannot enable the voice VLAN function on a port enabled with Link Aggregation Control Protocol
(LACP).