ER8411 - Heartbeat lost all few minutes
I got today my new ER8411.. adopted it to my local software controller running in docker on my synology nas, everything fine, the router works.
But when looking at the controller the router drops all few minutes it's connection, then it needs to be readopt again..
The weird thing is my old ER7412-M2 which was on the exact same port of my switch (SG3428X-M2) had this issue not. It is the newest firmware on the router.
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That was the log of the controller.. there was nothing like a configuration error, just connected and connected and connected
| Gerät verbunden |
98-BA-5F-45-AB-25
was connected.
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Jun 19, 2025 00:11:55 |
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| Gerät verbunden |
98-BA-5F-45-AB-25
was connected.
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Jun 19, 2025 00:06:05 |
But you may laugh now.. I tried again something I though like may be leaving the router on for a day will fix it maybe by itself.. I had something like that with a cisco catalyst switch.
I just plugged it to a free lan port of my synology and let it adopt by my test site until now since 26 minutes the router did not disconnect or anything.
Not sure why but until now it seems to be fixed "by itself", at least what I hope..
I did not Wireshark the port.. but if something would block the communication then all my other devices, switches and access points have to loose their connection to, since it was like that, when I wrote that post.
Synology Nas with Controller <--> Lan 5 of the ER8411 <--> Lan 4 ER8411 <--> SG3428X-M2 were all these devices (in my message info block, besides the ER7412-M2), were connected.
The configuration that works now, but did not work before is like this
Synology Nas with Controller <--> Lan 7 of the ER8411
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@Julian2111 Some updates.. I tried many things connecting my NAS directly to the router and that the issue still exists.. interesting may be that the rest of the devices doesn't show up that error even when the controller is connected to one of the routers RJ45 ports..
Also downgraded the firmware to the official 1.3.1 resetted the router and resetted the controller, same issue..
Not sure if that issue is a problem with that router/ the model series in general I'm going to send it back and get a new one.. because that is absolute trash for me.. especially after 4-5 adoption rounds the router reboots which is a joke tbf.
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What is your controller version ? You need at least version 5.15.x.x for the last two ER8411 firmware. As of today the latest version of the software controller is 5.15.24.17.
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@n0sh1t It is the latest version yes
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Also worth noting that if your controller is running in docker on the NAS, it is subject to the Synology's firewall that may also be interfering
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@GRL I tried to disable it and I connected my previous ER7412-M2 everything is running fine
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@MR.S I tried SFP+ and all RJ45 ports
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Ok, yes there has been a bit of an issue with the SFP ports which should be fixed, but RJ45 should work. I use the SFP+ port connected to a SG2428P with a unifi DAC cable and have no problems. But the same DAC cable does not work on the SFP port even though both ports are set to 1GB, I don't know why.
I am using firmware version 1.3.2
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@MR.S yeah it doesn't work on any port unfortunately I think I ship it back
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yes that's strange, I've had the ER8411 since it was launched but haven't had that problem before. but I agree that it seems a bit strange that the ER7412-M2 works without any problems.
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