can i hardwire my nest wifi pro points with ethernet for backhaul? the app doesn’t seem to recognize when i plug a cable in

Diagnosis

The Google Nest WiFi Pro 6E system supports "Ethernet Backhaul," which allows the primary router and the secondary points to communicate via a physical cable rather than relying on the 6GHz wireless band. When this is functioning correctly, the points stop using airtime for system overhead, significantly increasing the throughput and stability of your client devices. If the Google Home app is not recognizing the connection, it is usually because the system is failing to complete the "handshake" required to switch from wireless to wired mode. This failure typically happens for one of three reasons: a faulty Cat5e/Cat6 cable, an incompatible network switch sitting between the router and the point, or a synchronization lag where the point remains "locked" to the wireless mesh. To confirm the issue, check the "Device Information" section for a specific point in the Google Home app; if it still says "Wireless" or "Strong" under the connection status despite being plugged in, the wired backhaul is not active. If the point goes offline entirely after plugging in the cable, you likely have a network loop or a DHCP conflict caused by an external router.

How to Fix It

To properly establish a wired backhaul on the Nest WiFi Pro 6E, follow these exact steps to ensure the handshake is triggered correctly:

1. Prepare the Hardware: Ensure you are using Cat5e or Cat6 shielded cables. Avoid using old Cat5 cables, as they cannot reliably handle the gigabit speeds required for 6E backhaul and may cause the system to default back to wireless.
2. The Initial Setup: You must first set up your Nest WiFi Pro points wirelessly. Place the point in its final location, plug it into power, and add it to your network via the Google Home app. Ensure the point is fully updated and showing as "Online" before introducing the ethernet cable.
3. The Connection Sequence: Power down the secondary point by pulling the power cord. Plug one end of the ethernet cable into either of the two ports on the back of the Nest WiFi Pro point. Plug the other end into one of the available LAN ports on the primary Nest WiFi Pro router (or into a non-managed switch connected to the primary router).
4. The Power Cycle: Plug the power cord back into the secondary point. Wait 3 to 5 minutes for the device to boot. The system will automatically detect the ethernet link and prioritize it over the wireless signal.
5. Verification: Open the Google Home app, select the "WiFi" tile, click on "Devices," and select the specific point. Look for the "Connection" status. It should now explicitly state "Wired" instead of "Wireless."

If That Didn't Work

• Swap the Switch for an Unmanaged Model: If you are using a network switch between the router and the point, ensure it is an "Unmanaged" switch. Managed switches often have Spanning Tree Protocol (STP) enabled, which can detect the Nest WiFi Pro's mesh heartbeat as a network loop and shut down the port, preventing the wired backhaul from ever establishing.
• Perform a Hard Factory Reset: If the point is "stuck" in wireless mode, use a paperclip to hold the reset button on the bottom of the device for 10 seconds until the light rings pulse. Re-add the point to the network while the ethernet cable is already plugged in. This forces the system to identify the wired path during the initial provisioning phase.
• Test with a Short Patch Cable: To rule out faulty in-wall wiring (common in older homes), bring the secondary point into the same room as the primary router. Use a known-working 3-foot Cat6 patch cable to connect them. If the app recognizes the wired connection here, your house wiring is the culprit and may have a broken pair or poor termination.
• Disable "Smart" Features on Modem: If your ISP provided a "Gateway" (modem/router combo), ensure it is in "Bridge Mode." Having two routers on the network creates a Double NAT scenario, which can confuse the Nest WiFi Pro's ability to route backhaul traffic correctly.

Heads Up

• Avoid Daisy-Chaining: While possible, avoid connecting points in a long chain (Router -> Point A -> Point B). For maximum stability, use a "Star Topology" where every point connects back to the primary router or a central switch.
• Cable Quality Matters: The 6E system is sensitive to interference. Always use shielded (STP) cables if you are running the ethernet lines alongside electrical power cables in your walls to avoid EMI.
• Firmware Sync: If you notice the backhaul dropping, check if there is a pending system update. Google frequently releases patches that improve the stability of the ethernet handshake.
• Port Symmetry: Both ports on the Nest WiFi Pro are bidirectional; you do not need to worry about "WAN" vs "LAN" labels on the secondary points.