Telephony OUI

Organizationally Unique Identifiers (OUIs) are assigned by the Institute of Electrical and Electronics Engineers, Incorporated (IEEE) Registration Authority. Since the number of IP phone manufacturers is limited and well-known, the known OUI values cause the relevant frames, and the port on which they are seen, to be automatically assigned to a Voice VLAN. 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.

To configure Telephony OUI and/or add a new Voice VLAN OUI:

Procedure

Step 1

Click VLAN Management > Voice VLAN > Telephony OUI.

The Telephony OUI page contains the following fields:

  • Telephony OUI—First six digits of the MAC address that are reserved for OUIs

  • Description—User-assigned OUI description.

Step 2

Specify the following general Telephony OUI parameters

  • 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 3

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 4

Click Restore Default OUIs to delete all of the user-created OUIs, and leave only the default OUIs in the table. The OUI information may not be accurate until the restoration is completed. This may take several seconds. After several seconds have passed, refresh the page by exiting it and reentering it.

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 Default OUIs, the system recovers the known OUIs.