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Chapter 36: VLAN Commands
Configuring Voice VLANs
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voice vlan
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Console#
VLAN
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The switch allows you to specify a Voice VLAN for the network and set a
CoS priority for the VoIP traffic. VoIP traffic can be detected on switch ports
by using the source MAC address of packets, or by using LLDP (IEEE
802.1AB) to discover connected VoIP devices. When VoIP traffic is detected
on a configured port, the switch automatically assigns the port to the Voice
VLAN. Alternatively, switch ports can be manually configured.
Table 36-12: Voice VLAN Commands
Command
Function
voice vlan
Defines the Voice VLAN ID
voice vlan aging
Configures the aging time for Voice VLAN ports
voice vlan mac-address
Configures VoIP device MAC addresses
switchport voice vlan
Sets the Voice VLAN port mode
switchport voice vlan
Sets the VoIP traffic priority for ports
priority
switchport voice vlan rule
Sets the automatic VoIP traffic detection method for
ports
switchport voice vlan
Enables Voice VLAN security on ports
security
show voice vlan
Displays Voice VLAN settings
This command enables VoIP traffic detection and defines the Voice VLAN
ID. Use the no form to disable the Voice VLAN.
S
YNTAX
voice vlan voice-vlan-id
no voice vlan
voice-vlan-id - Specifies the voice VLAN ID. (Range: 1-4094)
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ETTING
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Global Configuration
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OMMAND
SAGE
When IP telephony is deployed in an enterprise network, it is
•
recommended to isolate the Voice over IP (VoIP) network traffic from
other data traffic. Traffic isolation helps prevent excessive packet
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