Reference Guide

VLANs 361
Defining Voice VLAN Port Settings Using CLI Commands
The following table summarizes the CLI command for defining Voice VLAN
port settings
.
The following is an example of the CLI commands:
OUI
Organizationally Unique Identifiers (OUIs) are a 24-bit numbers assigned by
the Institute of Electrical and Electronics Engineers, Incorporated (IEEE)
Registration Authority to equipment manufacturers.
Up to 128 OUIs can be stored on the switch. Nine specific OUIs of popular
VoIP phones manufacturers are stored by default.
Traffic from each type of IP phone contains the OUI for the phone
manufacturer. When frames are received, in which the source MAC address’s
first three octets match one of the OUIs in the OUI list, the port on which
they are received is automatically assigned to the Voice VLAN.
Table 14-8. Voice VLAN Port Settings CLI Commands
CLI Command Description
voice vlan enable
no voice vlan enable
Enables OUI voice VLAN on a port.
Use the no form of this command to disable
OUI voice VLAN on a port.
voice vlan secure
no voice vlan secure
Specifies that packets that are classified to
the voice VLAN with a source MAC address
that is not a OUI address (defined by Voice
Vlan OUI table) are discarded.
Use the no form of this command to disable
secure mode.
console# voice vlan state oui-enabled
console(config)# interface gi0/1
switchport trunk allowed remove vlan 8
console(config-if)# voice vlan enable
console(config-if)# voice vlan secure
console(config-if)#