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switchport voice vlan rule
This command selects a method for detecting VoIP traffic on a port. Use the no form
to disable the detection method on the port.
Syntax
[no] switchport voice vlan rule {oui | lldp}
• oui - Traffic from VoIP devices is detected by the Organizationally Unique
Identifier (OUI) of the source MAC address.
• lldp - Uses LLDP to discover VoIP devices attached to the port.
Default Setting
OUI: Enabled
LLDP: Disabled
Command Mode
Interface Configuration
Command Usage
• When OUI is selected, be sure to configure the MAC address ranges in the
Telephony OUI list. MAC address OUI numbers must be configured in the
Telephony OUI list so that the switch recognizes the traffic as being from a
VoIP device.
• LLDP checks that the “telephone bit” in the system capability TLV is turned on.
See “LLDP Commands” on page 4-193 for more information on LLDP.
Example
The following example enables the OUI method on port 1 for detecting VoIP traffic.
switchport voice vlan security
This command enables security filtering for VoIP traffic on a port. Use the no form to
disable filtering on a port.
Syntax
[no] switchport voice vlan security
Default Setting
Disabled
Command Mode
Interface Configuration
Console(config)#interface ethernet 1/1
Console(config-if)#switchport voice vlan rule oui
Console(config-if)#