VLAN Management
Configuring Voice VLAN Properties
Cisco Small Business 300 Series Managed Switch Administration Guide 124
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• The Voice VLAN QoS decision has priority over any other QoS decision,
except for the Policy/ACL QoS decision.
• The Voice VLAN QoS is applied to candidate ports that have joined the
Voice VLAN, and to static ports.
• The voice flow is accepted if the MAC address can be learned by the FDB.
(If there is no free space in FDB, no action occurs).
Configuring Voice VLAN Properties
Use the
Voice VLAN Properties Page
to globally configure the Voice VLAN feature
by configuring the following:
• VLAN ID of the Voice VLAN
• Traffic-class received by the traffic
• Time interval that the port remains in the Voice VLAN after the last VoIP
frame is identified as having an OUI in the table
To enable the feature on a port, it must be globally enabled in the Interface
Settings Page.
To configure Voice VLAN properties:
STEP 1 Click VLAN Management > Voice VLAN > Properties. The
Voice VLAN
Properties Page
opens.
STEP 2 Enter the values for the following fields:
• Voice VLAN Status—Select this field to enable the Voice VLAN feature.
• Voice VLAN ID—Select the VLAN that is to be the Voice VLAN.
• Class of Service—Select to add a CoS level to untagged packets received
on the Voice VLAN. The possible values are 0 to 7, where 7 is the highest
priority. 0 is used as a best-effort, and is invoked automatically when no other
value has been set (default).
• Remark CoS—Select to reassign the CoS level to packets received on the
Voice VLAN. If this option is selected, the outer user priority will be the new
CoS. Otherwise, the outer user priority will be the original CoS, since Trust
mode is used.
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