382 Configuring Switching Information
Configuring Voice VLAN
The Voice VLAN feature enables switch ports to carry voice traffic with defined priority. The priority
level enables the separation of voice and data traffic coming onto the port. A primary benefit of using
Voice VLAN is to ensure that the sound quality of an IP phone is safeguarded from deteriorating when
the data traffic on the port is high. The system uses the source MAC address of the traffic traveling
through the port to identify the IP phone data flow.
The Voice VLAN feature supports a configurable voice VLAN DSCP parameter. This allows you to set
the DSCP value. This value is later retrieved by LLDP when the LLDPDU is transmitted if LLDP has
been enabled on the port and the required TLV is configured for the port.
Use the Voice VLAN Configuration
page to configure and view voice VLAN settings that apply to the
entire system and to specific interfaces.
To display the page, click Switching
→
Voice VLAN
→
Configuration
in the tree view.
Figure 7-67. Voice VLAN Configuration
The Voice VLAN Configuration page contains the following fields:
•
Voice VLAN Admin Mode
— Select the administrative mode for Voice VLAN for the switch from the
drop-down menu. The default is disable.
•
Port
— Select the interface to view or configure.
•
Voice VLAN Interface Mode
—Select the Voice VLAN mode for selected interface. The default is
disable. The mode can be one of the following:
–
Disable
— Disable voice VLAN on the port.
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