How to Create and Configure a Network Bridge in Windows 11 to Connect LAN Segments

When working in home labs, small offices, or testing environments, you may occasionally need to link two separate physical network segments without buying a dedicated hardware network switch or setting up complex routing tables. Windows 11 includes a native Layer-2 networking feature called a Network Bridge. By grouping two or more physical network adapters (such as two Ethernet ports, or an Ethernet card and a Wi-Fi adapter), Windows allows connected devices to communicate on the exact same local IP subnet seamlessly.

What Is a Network Bridge in Windows 11?

In data networking terminology, a network bridge operates at the Data Link Layer (Layer 2) of the OSI model. Rather than performing Network Address Translation (NAT) or routing packets across separate subnets like an internet router, a software bridge forwards Ethernet frames directly based on MAC addresses.

When you create a Network Bridge in Windows 11:

• The bridged adapters surrender their individual IP configurations (both static and DHCP addresses).
• Windows generates a single virtual adapter labelled Network Bridge, which adopts a single shared IP address on the local network.
• Hardware connected to your secondary Ethernet port receives DHCP assignments directly from your primary upstream network router, behaving as if it were plugged into the same physical switch.

Prerequisites and Important Considerations

Before establishing a Network Bridge on your Windows 11 PC, review these essential configuration requirements:

• Multiple Network Adapters: You must have at least two functional, enabled network adapters installed in your machine.
• Internet Connection Sharing (ICS) Disabled: A Network Bridge cannot coexist with Windows Internet Connection Sharing. Ensure ICS is disabled on all adapters before creating a bridge.
• Promiscuous Mode Compatibility: Wi-Fi adapters bridged with Ethernet ports must support promiscuous mode or MAC cloning; otherwise, clients plugged into the secondary port may struggle to acquire DHCP leases.
• Administrative Privileges: Creating, altering, or tearing down network bridges requires local administrator permissions.

How to Create a Network Bridge in Windows 11

While the modern Windows 11 Settings app manages basic network configurations, bridging adapters is executed through the classic Network Connections control panel.

1. Press Windows Key + R on your keyboard to open the Run dialogue box.
2. Type ncpa.cpl and press Enter to launch the Network Connections control panel.
3. Locate the two or more network adapters you wish to connect (for instance, Ethernet 1 and Ethernet 2, or Wi-Fi and Ethernet).
4. Hold down the Ctrl key and click each adapter to highlight them simultaneously.
5. Right-click on any of the selected adapters.
6. Select Bridge Connections from the contextual menu.
7. Windows will configure the interfaces, temporarily dropping active network connections. Once finished, a new device titled Network Bridge will appear in the connections list.

How to Configure IP Settings on a Network Bridge

Once bridged, configure network settings exclusively through the virtual bridge adapter rather than individual ports:

1. In the ncpa.cpl window, right-click Network Bridge and select Properties.
2. Under the general tab, you can inspect which physical adapters currently belong to the bridge using the checkboxes.
3. Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
4. Choose Obtain an IP address automatically if your upstream router provides DHCP. Alternatively, assign a static IP address, subnet mask, default gateway, and DNS servers matching your local network range.
5. Click OK to commit your changes.

Adding or Removing Adapters from an Existing Bridge

If you install an additional network card or wish to disconnect a specific interface without destroying the entire setup:

1. Open Network Connections (ncpa.cpl).
2. Right-click Network Bridge and select Properties.
3. Under Adapters, check the box next to any newly installed adapter you wish to add, or uncheck an active adapter to release it back to standalone operation.
4. Click OK to apply the updated interface list.

How to Remove and Delete a Network Bridge

If you no longer need the bridge and wish to return your network adapters to their original individual states:

1. Open the Network Connections control panel (ncpa.cpl).
2. Right-click the Network Bridge adapter.
3. Click Delete.
4. Confirm the prompt. Windows will dismantle the bridge and automatically re-enable independent DHCP negotiation on each physical adapter.

Frequently Asked Questions

Why does bridging Wi-Fi with Ethernet sometimes fail to pass traffic?

Certain wireless network card drivers and wireless access points enforce WPA/WPA2 security rules that forbid multiple MAC addresses from communicating across a single wireless association. If downstream devices fail to connect, consider using an external USB gigabit network switch instead.

Can I bridge a VPN connection in Windows 11?

No, standard software VPN adapters cannot be bridged directly using native Windows bridging due to encryption and encapsulation layer restrictions.

Does bridging network connections slow down PC network performance?

On modern hardware, the CPU overhead for forwarding Layer-2 frames between ports is negligible and will easily handle standard gigabit throughput without impacting general system responsiveness.