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Chapter 36: VLAN Commands
Configuring Voice VLANs
switchport voice
vlan security
show voice vlan
E
XAMPLE
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.
S
YNTAX
[no] switchport voice vlan security
D
S
EFAULT
ETTING
Disabled
C
M
OMMAND
ODE
Interface Configuration
C
U
OMMAND
SAGE
•
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
E
XAMPLE
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.
S
YNTAX
show voice vlan {oui | status}
oui - Displays the OUI Telephony list.
status - Displays the global and port Voice VLAN settings.
– 1119 –
(voice vlan
mac-address).
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