@David-TP 

Are you all aware of this occuring on the X50-Outdoor units as well? If so, is there / will there be a beta update for the X50-Outdoor (v1.0) unit to address this issue?

I ask because I believe this exact issue is occuring on my X50-Outdoor unit (periodically showing 100 Mb connection instead of 1000, periodically drops ethernet backhaul, ensured ethernet is fine, and when switching ports seems to fix the issue for a while).

I've got three X50-Outdoor units (utilizing POE) and two X95 units going through a TL-SG108PE Smart Switch.

  @David-TP The same problem also occurs on the Deco X50. The Deco X50 Satellite is connected to the Deco X50 Main via ethernet network and occasionally disconnects (bright red LED) for a few seconds. For the speed from 1000 m/s to 100 m/s I have not checked. 

  @David-TP is there a trick to install the beta-firmware to a Deco XE75? Whenever I try this through the web UI, I get the error message "Upgrade failed. Please select the latest version of firmware to upgrade."

  @David-TP 

Updated my X20 twice - most recently with 1.2.1 Build 20230726 Rel. 71436 and the ethernet connection to my desktop PC has been failing repeatedly and for some reason, at an increasing rate where I have to reboot the router.

  @David-TP I have been on firmware 1.2.6 on my XE75 v1 for some time and had been stable for a few weeks. Since last week (no changes made) we've had sudden wifi disconnects and it seems 1 by 1 devices will stop working until a reboot of all decos. This is happened 5-6 times over the last 4 days or so.

Although not the same symptoms this 1.2.7 beta firmware is meant to sort but I tried it anyway and had same issues this morning, I have now downgraded to 1.2.2 to see if that helps in the short term.

i have my logs downloaded just in case a few mins after it happened this morning.

@David-TP Did upgrade my XE75 v1 to beta firmware. These are my findings

• 2 XE75 Deco units
• Device and connection seems stable. No performance or disconnection issues so far
• Ethernet port 1 is empty, port 2 goes to a switch, port 3 goes to ISP
• Port 2 switch has on it: 1. Ethernet connection to Arlo hub station (security cameras), 2. Ethernet connection to Local HDD, 3. Ethernet connection to another Deco XE75 unit

• Working scenarios
  • Scenario 1: Port 1 empty. Port 2 switch. Port 3 ISP
  • Scenario 2: Port 1 empty. Port 2 ISP. Port 3, switch

• NOT working scenarios
  • Scenario 3. Port 1 ISP. Port 2 switch. Port 3 empty (no IP, red light, no internet)
  • Scenario 4. Port 1 ISP. Port 2 empty. Port 3 switch (no IP, red light, no internet)
  • Scenario 5. Port 1 switch (w/o Deco unit). Port 2 ISP. Port 3 empty (there's internet but whatever is connected to the switch will be unaccessible)
  • Scenario 6. Port 1 switch (w/o Deco unit). Port 2 ISP. Port 3 Secondary Deco unit (There's internet, Secondary Deco unit works as well but devices connected to switch are unaccessible)
  • Scenario 7. Port 1 switch (w Deco unit). Port 2 ISP. Port 3 empty (There's internet at first, but after a few minutes the whole Internet will stop working, including internet WiFi)
  • In brief
    • Whatever is connected to port 1 is NOT detected by Deco App
    • Whatever is connected to port 1 will not have internet
    • If there's another Deco unit connected to port 1 via a switch it will likely crash the Internet at all, including WiFi

After this, did swap Deco roles 

• Working scenarios
  • Scenario 1: Port 1 empty. Port 2 switch. Port 3 ISP
  • Scenario 2: Port 1 empty. Port 2 ISP. Port 3, switch
  • Scenario 3. Port 1 ISP. Port 2 switch. Port 3 empty
  • Scenario 4. Port 1 ISP. Port 2 empty. Port 3 switch
  • Scenario 5. Port 1 switch. Port 2 ISP. Port 3 empty
  • Scenario 6. Port 1 switch. Port 2 any device. Port 3 ISP
  • Old main deco working if connected via port 2 or 3

• NOT working scenarios
  • Old main deco (now secondary deco) NO working if connected via Ethernet port 1

Looks like Ethernet port 1 is my issue... Any way to figure out the root cause? Port no longer working? Really doesn't make sense that only 1 port is no longer working