Chapter 17
| VLAN Commands
Configuring Voice VLANs
switchport voice vlan
security
show voice vlan
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)#
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
Command Usage
◆
Security filtering discards any non-VoIP packets received on the port that are
tagged with the voice VLAN ID. VoIP traffic is identified by source MAC
addresses configured in the Telephony OUI list, or through LLDP that discovers
VoIP devices attached to the switch. Packets received from non-VoIP sources
are dropped.
◆
When enabled, be sure the MAC address ranges for VoIP devices are configured
in the Telephony OUI list
Example
The following example enables security filtering on port 1.
Console(config)#interface ethernet 1/1
Console(config-if)#switchport voice vlan security
Console(config-if)#
This command displays the Voice VLAN settings on the switch and the OUI
Telephony list.
Syntax
show voice vlan {oui | status}
oui - Displays the OUI Telephony list.
status - Displays the global and port Voice VLAN settings.
(voice vlan
mac-address).
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