CLI Reference Guide-R05

Chapter 19 | VLAN Commands
Configuring Voice VLANs
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be configured on the switch so that traffic from these devices is recognized as
VoIP.
◆ Setting a mask of FF-FF-FF-00-00-00 identifies all devices with the same OUI
(the first three octets). Other masks restrict the MAC address range. Setting
FF-FF-FF-FF-FF-FF specifies a single MAC address.
Example
The following example adds a MAC OUI to the OUI Telephony list.
Console(config)#voice vlan mac-address 00-12-34-56-78-90 mask ff-ff-ff-00-00-
00 description A new phone
Console(config)#
switchport voice vlan This command specifies the Voice VLAN mode for ports. Use the no form to disable
the Voice VLAN feature on the port.
Syntax
switchport voice vlan {manual | auto}
no switchport voice vlan
manual - The Voice VLAN feature is enabled on the port, but the port must
be manually added to the Voice VLAN.
auto - The port will be added as a tagged member to the Voice VLAN when
VoIP traffic is detected on the port.
Default Setting
Disabled
Command Mode
Interface Configuration
Command Usage
◆ When auto is selected, you must select the method to use for detecting VoIP
traffic, either OUI or 802.1AB (LLDP) using the switchport voice vlan rule
command. When OUI is selected, be sure to configure the MAC address ranges
in the Telephony OUI list using the voice vlan mac-address command.
◆ All ports are set to VLAN hybrid mode by default. Prior to enabling VoIP for a
port (by setting the VoIP mode to Auto or Manual as described below), ensure
that VLAN membership is not set to access mode using the switchport mode
command.