C
HAPTER
35
| VLAN Commands
Configuring Voice VLANs
– 1155 –
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 (see the voice vlan mac-address command. 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 1287 for more information
on LLDP.
EXAMPLE
The following example enables the OUI method on port 1 for detecting
VoIP traffic.
Console(config)#interface ethernet 1/1
Console(config-if)#switchport voice vlan rule oui
Console(config-if)#
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
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