VLAN Management
Voice VLAN
239 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
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Adding OUIs to the Telephony OUI Table
Use the Telephony OUI page to configure Telephony OUI QoS properties. In
addition, the Auto Membership Aging time can be configured. If the specified time
period passes with no telephony activity, the port is removed from the Voice
VLAN.
Use the Telephony OUI page to view existing OUIs, and add new OUIs.
To configure Telephony OUI and/or add a new Voice VLAN OUI:
STEP 1 Click VLAN Management > Voice VLAN > Telephony OUI.
The Telephony OUI page contains the following fields:
• Telephony OUI Operational Status—Displays whether OUIs are used to
identify voice traffic.
• CoS/802.1p—Select the CoS queue to be assigned to voice traffic.
• Remark CoS/802.1p—Select whether to remark egress traffic.
• Auto Membership Aging Time—Enter the time delay to remove a port from
the voice VLAN after all of the MAC addresses of the phones detected on the
ports have aged out.
STEP 2 Click Apply to update the Running Configuration of the device with these values.
The Telephony OUI table appears:
• Telephony OUI—First six digits of the MAC address that are reserved for
OUIs.
• Description—User-assigned OUI description.
STEP 3 Click Restore OUI Defaults to delete all of the user-created OUIs, and leave only
the default OUIs in the table.
To delete all the OUIs, select the top checkbox. All the OUIs are selected and can
be deleted by clicking Delete. If you then click Restore, the system recovers the
known OUIs.
STEP 4 To add a new OUI, click Add.
STEP 5 Enter the values for the following fields:
• Telephony OUI—Enter a new OUI.
• Description—Enter an OUI name.
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