Content

Introduction

Requirements

Configuration

Configuration for OUI-Based VLAN on Controller Mode

Configuration for OUI-Based VLAN in CLI

Verification

Conclusion

QA

Introduction

OUI-Based VLAN allows Omada switches to automatically recognize IP Phones based on the OUI portion of their MAC address and place them into the appropriate Voice VLAN. This is especially useful in environments where IP Phones do not support automatic voice VLAN advertisement methods such as LLDP-MED.

Once identified, the switch can automatically assign the device to the configured Voice VLAN and apply QoS prioritization to help maintain stable and reliable voice communication during periods of network congestion.

This guide demonstrates how to configure OUI-Based VLAN through Controller Mode, Standalone Mode, and the CLI on supported Omada switches. It also explains how the feature can help simplify VoIP deployments and improve voice traffic management within the network.

Requirements

• Omada Sx2,3,5,6 series switches (Requires firmware compatible with Controller v6.0 and above)
• Omada Controller Version: 6.0.0.24 and above

Configuration

In a typical OUI-Based VLAN deployment, the IP Phone is connected directly to the switch, while a downstream device, such as a PC, is connected to the LAN/PC port on the back of the phone.

When the IP Phone connects to the switch, the switch identifies the device based on the OUI portion of its MAC address and dynamically assigns the phone traffic to the configured Voice VLAN. At the same time, the downstream PC connected through the IP Phone continues using the switch port's normal data VLAN configuration.

This allows both voice and data traffic to share the same physical switch port while remaining logically separated into different VLANs.

In this example, a Grandstream IP Phone with an OUI of EC:74:D7 is connected to the switch. A PC is connected to the LAN/PC port on the back of the phone. The switch automatically identifies the phone based on its OUI, places the phone traffic into the configured Voice VLAN, and allows the PC to remain on the data VLAN.

Configuration for OUI-Based VLAN on Controller Mode

Step 1. Firstly, create an OUI group.

Log into your controller and go to your Site > Network Config > Profile > Groups > Create New Group

Step 2. Next name the new group > select OUI Profile Group as the Type > click Add

Step 3. Under OUI Type select the OUI mask and fill in the OUI.

If multiple OUI entries need to be added, click Add OUI to add additional entries.

Click Save once complete.

OUI Type: Specify the OUI length.

OUI: Enter one or multiple organizationally unique identifiers (OUIs).

Description: Enter the description for the profile.

Step 4. Click Apply to create the group

Step 5 . Next navigate to Network Config > Transmission > OUI Based VLAN

Step 6. Click Create New Switch Rule

Step 7. Make a name fo the rule on Rule Name.

Toggle the Enable switch to activate the rule.

Select whether the rule will be applied to All Device Ports or Custom Ports on Port

Click Add

Step 8. Fill in the OUI entries

For OUI Profile select the group created

Under VLAN ID select the VLAN that they will be assigned to

Select the correct Priorty and the corresponding data packet will be marked with this priority for transmission

Click Save

Step 9. Click Apply

Configuration for OUI-Based VLAN in CLI

Note: If you are using firmware prior to the one adapted to controller v6.2, you will need to manually add the VLAN to that interface.

Step 1. Create the VLAN on the global config

Vlan <ID>

Name <description>

See example below:

Vlan 31

Name GSPhones

Step 2 (optional). Specify the interface or interface range the Vlan will be added to as a tagged VLAN.

Note: This is primarily for switches that are running firmware that are not adapted to controller v6.2

Interface <interface-type> <port>

Switchport general allowed vlan <ID> tagged

See example below:

Interface range gigabitEthernet 1/0/1-8

Switchport general allowed vlan 31 tagged

Step 3. Configure OUI-Based VLAN on the global config.

voice-vlan mac_addr <MAC Address > oui_mask <OUI Mask> vlan <VLAN ID> priority <Priority> oui-desc <Description> interface <Range>

See example below:

voice-vlan mac_addr EC:74:D7:00:00:00 oui_mask FF:FF:FF:00:00:00 vlan 31 priority 7 oui-desc GSPhones int gig 1/0/1-8

Verification

CLI Confirmation:

show voice-vlan

Conclusion

OUI-Based VLAN simplifies VoIP deployments by automatically identifying IP Phones based on their MAC address OUI and assigning them to a designated Voice VLAN. This helps reduce manual configuration while ensuring voice traffic receives proper prioritization across the network.

QA

Q1: Can multiple OUI entries be assigned to the same Voice VLAN?

A1: Yes. Multiple OUI entries from different IP Phone manufacturers can be added to an OUI Profile Group and assigned to the same Voice VLAN.

Q2: What happens if it won't let me configure the voice VLAN ID?

A2: Check and see if that VLAN is created on that switch and tagged on the desired ports

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