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?
42 replies
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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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Well then, now I'm confused again. If the newest versions of firmware allow for LAN functionality even after power cycling the gateway router when the internet service is down, why couldn't I connect to my local devices?
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Eero is literally the worst wireless networking device I’ve ever used in my 20+ years as a networking professional. Should have gone with a networking name brand.
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This is still happening to me with the latest 3.18.0 software. I have a server wired to the main eero router that’s also wired to my ISP router, and whenever internet is down, I can’t access my server in the LAN from wireless clients.
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This is still happening with the latest 3.18.1 update, and honestly, it's ridiculous to lose the LAN when there's no internet!!
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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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