
LAN Not Working When Internet Service is Down
My internet service was dowm for about an hour. During that time, all 3 of my eero pro routers had red lights. I'm the eero app, e etthing showed as being offline with zero devices connected to the network. And that is what I don't understand. The Wi-Fi network should have still been functioning. But I couldn't print to my wireless printer. If this is true, why doesn't the LAN work just because the WAN is down?
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Back in August, eero's software update enabled LAN persistence to where the internal network would continue working even if the internet was down. So you shouldn't have been having any issues with your internal devices talking to each other. But during an internet outage, the app will show all the eeros as being offline and no devices connected because the app is getting it's info from eero's servers and since the internet is down, your gateway eero can't relay any information up to the servers. So that part is normal behavior.
Were you trying to print from a computer or a mobile device (like a phone or tablet)? If it was a mobile device, that functionality might involve needing to route the print job through the internet in which case it would fail during an internet outage. But if it you were printing from a computer, that should've just been sending the job directly to the printer.
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Did some more tests. I have 3 eeros pro in mesh. The gateway is plugged to the ISP router, and the eero network is in NAT mode. I have a server also wired to the eero gateway. When I switch off the ISP router, everything keeps working until the eeros turn their lights to red. Then, I can ping Wi-Fi connected devices, but the server wired to the eero I can't reach anymore in my LAN. And after I switched back on the ISP router, everything stopped for a minute or 2, even pings to other eeros or wi-fi devices, and then after internet access came back, all is working fine.
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I have two eero's, a pro and standard model. Both have a single ethernet cable connected to them and are in bridged mode. When my internet drops, they both start dropping their existing MAC address, and start broadcasting from a second MAC address and then bounce back and forth until the internet comes back online. When they drop their MAC and start advertising a new hardware address (even though only one port has an ethernet cable connected) all the connected wifi devices have issues talking to one another.
I know this sounds weird, but I'm a bit anal about monitoring bits and pieces.
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resubmit as other comment pending review:
I have two eero's, a pro and standard model. Both have a single ethernet cable connected to them and are in bridged mode. When my internet drops, they both start dropping their existing MAC address, and start broadcasting from a second MAC address and then bounce back and forth until the internet comes back online. When they drop their MAC and start advertising a new hardware address (even though only one port has an ethernet cable connected) all the connected wifi devices have issues talking to one another.
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Having the same issue here. Connection at the cable modem goes down and everything was working, but as soon as the red light came on the eeros the LAN went down and I lost connections to local devices as well. When the internet came back up, LAN access was back online. I have 3 eero Pro devices. Some of the devices are hanging off of the eero via an ethernet cable connected to a 1Gb switch.
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This is still an issue, have a pro and beacon and once the red light goes on the eero doesn’t pass any wireless traffic. The eero is plugged into a switch which is trunked to another switch, then to another switch, then my firewall/modem, then ISP. Please fix ASAP! Wireless should still work even if my ISP is down.
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I have a case open, but what I would see would be my wirelessly connected devices would work fine if there was some flakiness between the Eero 5 pro gateway and the ISP (CAT 6 cable, modem, ISP issues). The hardwired devices on my LAN would disappear or stop working after a time.
The support person mentioned that Eero needs a connection to the internet to work properly and a bad cable, modem or ISP service could cause unreliable behavior. Why it was only impacting the wired devices from my switch, he could not say.
I am on my 3rd switch, new CAT 6 cable from the Eero 5 Pro gateway to the switch and I am on my 2nd Eero gateway.
I just today replaced the CAT 6 cable from the modem to the Eero 5 pro gateway and so far, it seems to be holding onto the wired connections.
This set up worked perfectly for 5 months and then it just started to fail. The Eero 5 pro bundle was purchased June 2020 (6 Months old).
I should be able to do everything on my LAN without an internet connection. I should be able to unplug the cable from the modem and I should be able to access my wired NAS from my wirelessly connected desktop.
This doesn't appear to be the case if the newly replaced CAT 6 cable from the modem corrects the problem. -
This is still a problem. I have two wired Eero Pros and one wireless Eero Pro. Our ISP went down and I couldn't access anything on the local network, including accessing my modem to check the status of my internet connection (the modem is at 192.168.0.1). The Eero app didn't show that the internet was down, in fact it wasn't even showing current state of anything on the network. After rebooting the gateway Eero, the app just reported everything down.
What's the point of having an Internet section in the app that reports it as Online, if it can't report when it's offline?
My Eero firmware version is 6.1.1
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I also have the same problem with the Eero 6 Pro. I have 4 of them; 2 connected via Ethernet port, and 2 of them via WiFi mesh. When the Spectrum Internet goes out, ALL of the Eero's have red LEDs, and there is no local LAN persistence, so everything on WiFi disconnects (the Eeros haven't been power cycled). The local LAN (WiFi) should remain up when the Internet goes down. Also, when the Internet does come back online the Eero's can take up to 30 minutes before they return online, and often need to be power cycled to restore the WiFi. This is unacceptable.
Eero support: how can the Eero 6 Pros be configured to maintain their LAN persistence and not turn red/drop WiFi whenever the Internet goes down??
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I would venture to say that the required internet connection is by design and eero isn’t being forthcoming what’s up? My theory is they want to prevent firewall packet filtering devices from being added between the isp router and wifi device. I ran a wireshark trace why do you do wait for for internet connection to be live why? is my profile or telemetry/logging needed to be online first before you turn on my LAN. Are you trying to prevent people from using packet filtering devices because that is what is happening.
I am sad that you don’t allow via your latest firmware updates to add devices that protect my privacy.
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Well son of ...... my Xfinity went down and my whole house went down! This is unacceptable, especially when using home automation such as Home Assistant where much runs locally. Anyone find a solution? Even if it’s another mesh network system? I placed my own topic here as well as just sending a support request. They’ll be going back to Best Buy if they can’t fix this… sure glad I have Geek Squad coverage on these… I picked up the unit in my office and Wow do they get Hot!
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3 year old topic, apparently still doesn't work. My eero and client will not transmit a wifi signal if the internet is down. eero server is connected to my DSL modem and LAN with Cat 6 cable. No reason why WIFI and local LAN access should be down even though I cannot get WAN access. You are selling Wifi systems rather than internet repeaters, aren't you?
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Well I had it. Returned my four (4) EERO Pro 6 units to Best Buy and spent the extra to buy the 3 pack of the NETGEAR - Orbi AXE11000 Quad-Band WiFi 6E Mesh System. Yes, its costly, but they claim it will keep up the local internal house network even when the outside provider goes down. These units have a fourth wireless band they use to talk to each of their units. Now I just realized I need to test this new setup so I'll have to come back and report.
What finally killed the EERO is I simulated a down internet provider by disconnecting my cable modem. For a short time all my units were flashing a white LED color and the "intranet" local network still functioned. I could access my NAS downstairs from my office upstairs via the EERO network. Then after sometime passed, all four of my EERO units went solid RED and my local "intranet" network went down. I could no longer access my NAS, Home Assistant smart home was down, the "home" network was down. This should NOT ever happen. Local Wi-Fi should never be contingent on having an external "internet" connection.
Ok, so hopefully later today I'll be able to try a simulated down internet connection with my new Orbi units and report back. First, I have many body parts to cross, a few prayers and offerings to the network gods, as well as breakfast and walking the dogs to get done...
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I just spoke with EERO support. The call went to their third level support, where I was informed that LAN Persistence is only supported in Routed mode, not Bridged mode. Therefore, if you lose Internet connectivity and you use EERO Bridge mode (as most IT professionals will do), your WiFi network is no longer going to work (it's more complicated, but keeping it short... some traffic will get through making it the issue that much more frustrating to identify). I have 7 EERO Pros and I have evangelized how awesome EERO is to industry peers (I am a Network Solutions Architect) but now I feel so foolish for having done so ... I've already started to clear it up with folks I have made recommendations to, and to find a wireless solution that can stand on it's own. Apparently it's been a known issue with EERO for many years and remains unaddressed. I loved EERO until I figured this out. Hopefully I can find a suitable alternative that performs as well but without the limitations.