You bought eero to fix your network. So when Ethernet stops working, it’s twice as frustrating.
Here’s the thing: “eero wired connection not working” can mean three completely different problems. Your device isn’t getting internet through the cable. Your eero gateway can’t connect to your modem. Or your eero nodes aren’t detecting the wired backhaul between them.
Most guides lump all three together.
That’s exactly why people stay stuck.
This guide breaks them apart and walks you through each fix in order.
Start from the top.
You’ll likely be done within five minutes.
Why Is My Eero Wired Connection Not Working?
The most common reasons an eero wired connection stops working are: using a cable that’s too old or underpowered, plugging into the wrong port, a managed switch interfering with eero’s network detection, wired backhaul not being recognized between nodes, or a double NAT conflict from your ISP’s modem-router combo.
Knowing which problem you have makes the fix obvious.
Work through each section below until you find your fix.
Start Here: The Quick Fixes That Solve 80% of Cases
Before anything else, run through these basics. They sound obvious. But they fix the problem more often than people expect.
Check your cable
Not all Ethernet cables are equal. For gigabit speeds, you need at least Cat 5e. Cat 6 or Cat 6a is better. Cat 5 cables max out at 100 Mbps regardless of your internet plan. Swap in a new cable if yours is old or unmarked.
Also check for physical damage.
A cable that’s been pinched under furniture or bent sharply at a corner won’t perform reliably, even if it looks fine. The official eero troubleshooting guide flags cable quality as the first thing to check, and for good reason.
Check which port you’re using
This trips people up constantly. The eero gateway has two Ethernet ports: one WAN (for your modem) and one LAN (for your devices or switch). Plugging your modem into the LAN port means eero never establishes an internet connection. The ports are usually labeled, but double-check your specific eero model’s documentation if you’re unsure.
Power cycle in the right order
The order actually matters here. Don’t unplug everything at once.
- Unplug your modem first. Wait 60 seconds.
- Plug the modem back in and let it fully come online (about 2 minutes).
- Unplug your gateway eero, wait 30 seconds, and plug it back in.
- Wait for the LED to turn solid white before testing.
Doing this simultaneously, or in the wrong sequence, means the modem and eero often fail to handshake properly.
Is Your Switch the Problem?
If you’re using a network switch to connect multiple devices or eero nodes, the type of switch matters more than most people realize.
Managed switches frequently conflict with eero’s auto-detection. Features like STP (Spanning Tree Protocol), 802.1Q VLAN tagging, and IGMP snooping can interfere with how eero nodes communicate. The eero community has documented several cases of wired backhaul simply refusing to initialize when a managed switch sits between nodes.
The fix: use an unmanaged switch. Unmanaged switches pass traffic through without processing it, which is exactly what eero needs.
Also check your network topology.
The correct wired setup is:
modem → gateway eero → unmanaged switch → other eero nodes and devices
Connecting the switch directly to your modem, or placing it before the gateway eero, creates DHCP conflicts. Daisy-chaining switches causes the same problem. Keep the topology flat and simple.
Wired Backhaul Not Working? That’s a Different Problem
Wired backhaul is when your eero nodes connect to each other via Ethernet cables instead of wirelessly. It’s faster and more stable, but it only works on specific models.
Models that support wired Ethernet backhaul: eero Pro 6E, eero Pro 6, eero 6+, eero Max 7.
Models without Ethernet ports: eero Beacon and eero 6 Extender. These cannot participate in a wired backhaul setup at all.
According to the official eero support documentation, eero automatically detects and uses the wired path once cables are connected. There’s no setting to toggle in the app. If it’s not switching to wired, something in the physical setup or network topology is blocking it.
Common reasons backhaul stays wireless even when cables are plugged in:
The eero community forum notes that the app sometimes shows nodes as wireless even after a wired connection is active. A simple app refresh usually fixes the display.
Once backhaul is working, according to the eero blog on Ethernet backhaul, your mesh network automatically routes all node-to-node traffic over the wired path, keeping your wireless bandwidth free for your devices.
Double NAT Is Quietly Breaking Your Connection
Double NAT happens when two devices are both acting as routers on your network. Your ISP’s modem-router combo assigns IP addresses. Then your eero tries to do the same thing.
The result: slow speeds, dropped connections, and devices that can’t reliably talk to each other.
How to check if you have double NAT:
Open the eero app.
Go to Settings → Advanced → DHCP & NAT. If it flags double NAT, you have it.
Two ways to fix it:
The first option is bridge mode. Put your ISP’s gateway into bridge mode, which disables its routing function and lets eero handle everything. Not all ISPs support this. If you’re running eero with Xfinity, Xfinity has a specific process for enabling bridge mode on their gateway that’s worth following closely.
The second option is DMZ assignment. Tell your modem to route all traffic directly to your eero’s IP address without filtering it. It’s less clean than bridge mode, but it works when bridge mode isn’t available.
The eero official guide on bridge mode and double NAT walks through both methods in detail.
Starlink users run into this same issue often. If you’re using eero with Starlink, the Starlink dish has its own NAT layer, making bridge mode especially important.
Advanced Fixes: When Nothing Else Works
If you’ve worked through every section above and your wired connection is still failing, here are the last-resort options.
Check your firmware
Eero updates automatically overnight, but only when it has an active internet connection. If your eero has been offline for a while, it may be running an outdated firmware version with known bugs. Connect temporarily via Wi-Fi, open the eero app, and check for updates under
Settings → Software Update.
A documented issue with slow eero Pro 6 wired speedswas traced to a specific firmware version and resolved with an update.
Delete and re-add the problem node
Sometimes a single eero node gets stuck in a bad state that reboots won’t clear.
In the app, tap the node, go to its settings, and remove it from your network.
Then re-add it as if it’s new.
This often resolves persistent wired failures that nothing else fixes.
Check your ISP-specific settings
Some ISPs require PPPoE credentials or a specific WAN VLAN tag.
If PPPoE isn’t configured correctly in the eero app, your gateway won’t establish a wired connection to your modem at all — even if the cable and hardware are fine.
Go to Settings → Network Settings → Advanced Settings and confirm the credentials match exactly what your ISP provided.
The AT&T eero Pro 6E forum thread is a good example of ISP-specific configs causing failures that look like hardware problems.
Run the network health check
Open the eero app, go to Help → Troubleshooting, and run the health check.
Eero’s support documentation recommends this step before moving to a factory reset.
Factory reset as a last resort
Hold the reset button on the back of your eero for 10 seconds until the LED flashes red.
This wipes the device completely. You’ll set it up from scratch. Only do this after exhausting every option above.
The Fix Is Usually Simpler Than You Think
Most eero wired connection problems come down to one of three things: a bad cable or wrong port, a managed switch disrupting the network, or a double NAT conflict with your ISP’s equipment.
Work through the sections in order.
Quick fixes first.
Then switch setup.
Then backhaul.
Then double NAT.
Then advanced options.
The fix usually shows up long before you get to the bottom.
Once everything is connected and stable, it’s worth knowing what Eero Plus adds to a properly wired network. The security features and content controls run on top of your existing setup — they just work better when your network foundation is solid.
Frequently Asked Questions
Why does my eero show as wireless even when it’s plugged in via Ethernet?
The eero app sometimes has a display lag when a node switches from wireless to wired backhaul. Force-close the app and reopen it. If the node still shows as wireless after a few minutes, check that the cable is firmly seated on both ends and that there’s no managed switch between the nodes causing a detection conflict.
Does eero support wired Ethernet backhaul?
Yes, but only on certain models. Eero Pro 6E, Pro 6, 6+, and Max 7 all support wired backhaul through their built-in Ethernet ports. Eero Beacon and eero 6 Extender have no Ethernet ports and cannot be wired. According to the official eero documentation, the system detects and activates wired backhaul automatically once cables are connected.
What Ethernet cable should I use with eero?
Use at least Cat 5e for standard setups. For gigabit connections, Cat 6 or Cat 6a is recommended. Cat 5 cable caps your speeds at 100 Mbps regardless of your internet plan. Make sure the cable is in good physical condition with no sharp bends, pinches, or visible damage along its length.
Can I use a managed switch with eero?
You can, but it often causes problems. Managed switches with STP, 802.1Q VLAN tagging, or certain IGMP settings can prevent eero nodes from detecting each other’s wired connections. For most home setups, an unmanaged switch is the better and simpler choice. If you must use a managed switch, disable STP and any VLAN tagging features.
How do I know if I have double NAT with eero?
Open the eero app and go to Settings → Advanced → DHCP & NAT. If it shows a double NAT warning, your ISP’s modem is also acting as a router. Fix it by enabling bridge mode on your modem (which disables its routing function) or assigning your eero’s IP to the modem’s DMZ.
