Chapter 21
| VLAN Commands
Configuring Voice VLANs
– 615 –
description - User-defined text that identifies the VoIP devices. (Range: 1-32
characters)
Default Setting
None
Command Mode
Global Configuration
Command Usage
◆ VoIP devices attached to the switch can be identified by the manufacturer’s
Organizational Unique Identifier (OUI) in the source MAC address of received
packets. OUI numbers are assigned to manufacturers and form the first three
octets of device MAC addresses. The MAC OUI numbers for VoIP equipment can
be configured on the switch so that traffic from these devices is recognized as
VoIP.
â—† 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 a
mask of 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
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