Switching Commands
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ProSafe Managed Switch
Voice VLAN Commands
This section describes the commands you use for Voice VLAN. Voice VLAN enables switch
ports to carry voice traffic with defined priority so as to enable separation of voice and data
traffic coming onto the port. The benefits of using Voice VLAN is to ensure that the sound
quality of an IP phone could be safeguarded from deteriorating when the data traffic on the
port is high.
Also the inherent isolation provided by VLANs ensures that inter-VLAN traffic is under
management control and that network- attached clients cannot initiate a direct attack on voice
components. QoS-based on IEEE 802.1P class of service (CoS) uses classification and
scheduling to sent network traffic from the switch in a predictable manner. The system uses
the source MAC of the traffic traveling through the port to identify the IP phone data flow.

voice vlan (Global Config)

Use this command to enable the Voice VLAN capability on the switch.
Default
Format voice vlan
Mode
no voice vlan (Global Config)
Use this command to disable the Voice VLAN capability on the switch.
Format no voice vlan
Mode

voice vlan (Interface Config)

Use this command to enable the Voice VLAN capability on the interface.
Mode The administrative mode through which Double VLAN Tunneling can be enabled or
disabled. The default value for this field is disabled.
EtherType A 2-byte hex EtherType to be used as the first 16 bits of the DVLAN tunnel. There are
three different EtherType tags. The first is 802.1Q, which represents the commonly used
value of 0x8100. The second is vMAN, which represents the commonly used value of
0x88A8. If EtherType is not one of these two values, then it is a custom tunnel value,
representing any value in the range of 0 to 65535.
disabled
Global Config
Global Config
Default disabled
Term Definition