Deco XE75 port 1 no longer working
Good day. A few months ago lost my internet connection and after no luck debugging the issue I simply swap my ISP ethernet cable from port 1 to 3
- Before swaping: Port 1 ISP. Port 2 Deco Secondary unit. Port 3 Switch
- After swaping. Port 1 Switch. Port 2 Deco Secondary unit. Port 3 Switch
Several weeks later there were some power outages due rain & wind. Internet and Deco units recovered but devices connected to switch were no longer accesible
- Removing the swicth and connecting the device (example. laptop) to port 1 didn't fix the issue (no switch issue)
- Ethernet cables working as intended (neither failure here)
- Attempt several scenarios (cant recall them) but ultimately only port 2 & 3 were working as intended
Upgrading to 1.2.6 didn't fix the issue and just yesterday I update to beta firmware 1.2.7 with promising results yet still issues
My results
- 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 network HDD, 3. Ethernet connection to another Deco XE75 unit
- Main Deco Working scenarios
- Scenario 1: Port 1 empty. Port 2 switch. Port 3 ISP. Secondary Deco working as intended.
- Scenario 2: Port 1 empty. Port 2 ISP. Port 3, switch. Seocndary Deco working as intended
- Main Deco 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, Secondary Deco works, 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 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 (Main Deco, used to be Secondary)
- Scenario 1: Port 1 empty. Port 2 switch. Port 3 ISP. Secondary Deco working as well
- Scenario 2: Port 1 empty. Port 2 ISP. Port 3, switch. Secondary Deco working as well
- Scenario 3. Port 1 ISP. Port 2 switch. Port 3 empty. Secondary Deco working as well
- Scenario 4. Port 1 ISP. Port 2 empty. Port 3 switch. Secondary Deco working as well
- Scenario 5. Port 1 switch. Port 2 ISP. Port 3 empty. Secondary Deco working as well
- Scenario 6. Port 1 switch. Port 2 any device. Port 3 ISP. Secondary Deco working as well
- Secondary Deco (old Main Deco) WORKS 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
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Same on my XE75(1.0) 1.3.2 Build 20240119 Rel. 39178 but for me the solution was to block the client in question and then unblock it using the app.
The client was reachable even when the app said that it was blocked
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@rogerthn wonder if that would work in the cases where the satellite deco doesn't connect as well. Obviously we can't see them in the client list but we could plug in a known client and try blocking and unblocking it to see if it fixes the port.
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Another data point. Two-pack XE75, port 1 on the main unit simply failed in the middle of the night while I was online for work. Updating to latest firmware fixed nothing. Link and network activity are detected, but port simply doesn't work. I tried establishing a connection with my laptop on port 3 and then moving it to port 1 to see if maybe it was a DHCP issue, but no luck.
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@AGMV I think given everyone's comments and experiences, it's safe to assume that these units are definitely flawed and were part of some engineering design flaw. As I've been a long time customer, I hope that TP-Link learned from this error so it will NOT be seen again in any future products (even if they don't ever acknowledge the mistake).
FWIW - I think these were the first Deco's release with 3-ports instead of the usual 2, while switch ports are usually dumb ports, I wonder if the upgrade had anything to do with the problem. Perhaps Port 1 blowing during power outages, saved the rest of the switches from blowing leaving us all with working units.
This expereince has truly been an inconvenience because it took trial and error (TIME) for each of us to figure out the real problem in order to understand work arounds that would not interfere with our networks. I for one, was scratching my head in confusion and experiencing much frustration until I figured this out ESPECIALLY BECAUSE PORT 1 LIT UP AS CONNECTED EVEN THOUGH THEY REALLY WEREN'T. Couple that with the fact that I recomended and installed this at over 15 homes, my vauable time was wasted twice, once to figure out the issue and again to return to those installed homes to fix their network issues (that I did not create).
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If anyone still has a faulty XE75 with a dead port can I have a troubleshooting suggestion. I recently had issues with my PS5 accessing my Plex server locally and I thought it might be worth checking if it would affect the LAN ports as I got all my faulty units RMA'd.
Try switching the Deco network from Router to Access Point mode (or to Router if your setup is already AP) and let the system reboot and settle for a while. Then switch the system back to whatever mode you normally use and let it settle again. Despite numerous reboots my PS5 failed to connect locally but as soon as I switched to AP mode and back to Router mode it fixed everything. It's a long shot but worth a try!
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@Wrayman So basically switching from Router Mode to AP Mode and back fixed your issue ?
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@mooffy No, I RMA'd my faulty units before I could try this solution. I was suggesting that people who are currently affected by the issue to try it as a troubleshooting step.
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Thank you for the posts everyone. I thought I was losing my mind trying to get these XE75s to work. Defective product for sure.
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