@David-TP  Are there any known issues with this PX50 and ethernet backhaul in the latest firmware?

  @Alexmesh I suggest testing the Ethernet port of the satellite Deco, by connecting a device to that port.

  @David-TP 

David-TP wrote

  @Alexmesh 

Hi, I don't think there has been any confirmed issue yet with 1.2.1 firmware.

For the issue reported here, do you mean all 3 Deco PX50 would turn red or flashing red when there is Ethernet Backhaul between main Deco and Dining room Deco, or just the Dining room Deco?

If both satellite Deco PX50s are on PLC+Wi-Fi, the internet connection is quite stable, right?

Are you able to reproduce this issue in short time?

Thank you very much and wait for your reply.

Best regards.

Hi David,

Correct, all three Deco's go off line and the mesh network goes into a loop of trying to come back online and failing again but not getting to the point of stability, devices lose wifi connection during these episodes too and the app on the phone shows the lost connection screen. When the decos are not connected via ethernet everything is mostly stable apart from late evening PLC droppouts which I have been unable to solve. Once I pull the ethernet backhaul link they eventually go back to being stable with a PLC+wifi link.

I can reproduce this issue by connecting garage deco to the main deco via ethernet in the same room, I even made garage deco the main unit and connected it to main deco via another short known good ethernet cable and it still made the network go down, as another test I connected garage deco to dining room deco via cable and that was stable for the hour long test however but dining room was connected to main deco via wifi+plc. These cables and ports work fine for other devices.

But here is the part I can't work out, after the first mesh failure I removed the ethernet link between main deco and dining room deco and let it settle and rebooted the mesh then I reconnected and it was fine for the night until the same thing happened in the morning, wifi went down and changing lights red sometimes solid red sometimes flashing and occasonally green which didn't last for more than a few moments. Network traffic is less at night so might have something to do with it? Not sure.

I noticed in the log files there are lines about memory being low before ethernet backhaul went down one time, but the problem is there are so many errors and warnings in the log it makes it hard to know what is applicable.

Wed Nov  8 23:21:41 2023 daemon.err tmpsvr[5805]: Error: memfree less than 10000 KB
Wed Nov  8 23:21:41 2023 daemon.err tmpsvr[5805]: Error: tdp_trans_relay

/usr/bin/apsd: apsd_check_eth_has_neigh:1432: Error: can't find ifname[eth1.191] in eth_ifname

daemon.notice awn[14909]: [awnd_eth_handle_neigh:5341]: Ethernet backhaul link down.

I can PM log files directly if you'd like or look for certain entries along with the Deco serial numbers, I have a UK unit and purchased it from amazon and it's one which had the missing PLC symbol problem until a hard reset was carried out. It's quite frustrating not being able to use ethernet backhaul.

The tl;dr version of this is connecting an ethernet cable between the master and slave deco eventually makes the mesh unstable but it can take all night if the decos have been rebooted recently, also the network had traffic on it during these times of failure. What is the next step here? If you guys set one up for a test then I noticed it happens faster if the network is active and has been running vs freshly set up.

  @yves_b Tried that, all ports and cables are working fine including the run from the main to the dining room. I checked all cables with a network cable tester too and I can connect devices using all these port and cable combinations and it works fine, its the Deco units that go haywire. I am not using any switches and it's a very basic network. I get 1gbps when connected via windows to these ports and can run LAN speed test between two computers.

Update: My latest test was stable for just under a day starting from late last night but around 20:30 this evening the deco mesh went down and it was back to red light cycles on the deco units until I disconnected the ethernet link between main loft deco and dining room then it came back up. This is also around the same time as the powerline backhaul link goes unstable although that doesn't bring the entire mesh down like the ethernet backhaul dropping does.

Also for this test I removed Garage deco from the network by unplugging it from the mains. @David-TP  is this likely to be a firmware or a hardware bug?

Still happening, will be stable for a day then I get red lights in the late evening until I disconnect the ethernet cable between the units.

  @David-TP Hi David, The issue happens on its own accord during the later parts of the evening UK time (7pm-midnight) but it's not on demand as to when the mesh becomes unstable, same goes for the powerline link.

For anyone following, I'm still having issues. The ethernet backhaul often renders the decos to display red lights and the only way to resolve it is to disconnect the ethernet backhaul and let it reconnect via wifi, then I can often reconnect via ethernet until it decides to disconnect again, right now my past two disconnections have been during the mid morning, I actually had to reboot the main deco the other day to get it back up and running.

I spent my evening looking at posts on here of similar ethernet backhaul problems and it doesn't give me confidence given the posts are from months or even years back.