XE75 - Access Point Mode Issues

XE75 - Access Point Mode Issues

XE75 - Access Point Mode Issues
XE75 - Access Point Mode Issues
2025-07-02 22:14:27
Model: Deco XE75  
Hardware Version: V5
Firmware Version: 1.2.14

Hello everyone,

Firstly, i would like to preface that im not sure what hardware version im on. I just bought the devices. Previously i had 3 Deco M4 which worked perfectly both in router mode as well as in access point mode.

Now, let's get the fun started. Moved to a new house and required better models due to the second floor and brick walls. Bought 2 x XE75 and set them up initially in router mode. Then tried to change them to Access Point mode and the fun started.

The ISP Router does not support bridge mode (ZTE F6605R from Orange) so i kept the DHCP Server from it active and going. The issue i encounter when the Deco system is set to Access Point is the following :

1. Power cuts of and both the Router and Deco goes down.

2. Power comes back on, both devices start booting up.

3. Deco boots up faster than the router

4. Wifi connection works and its online, but some websites don't work at all, and i can't access the main Router through Wifi devices

5. I can access the main router through my PC which is connected to a Deco Satellite thorugh wire (not the main Deco, a satellite at the second floor)

6. Network is unstable in general

When this happens, if im connected to the Wifi, the Deco app shows as the network being offline. But if i disconnect from the Wifi and restart the app on Mobile Data, the network shows as online.

How do i usually fix this ?
1. Turn off all decos

2. Turn off main router for 10-15 seconds

3. Turn on main router and wait to boot all the way

4. Turn on main deco

5. Check connection, if its the same issue, repeat

6. Once connecton is good, turn on deco satelites

 

7 times out of 10 it works, the other 3, the issue persists and i have to repeat the process.

 

What have i tried ?
1. Reset factory and remake the whole network

2. Turn Smart DHCP both on and off - it does the same thing no matter the setting

3. Turn off Fast Roaming and Beamforming

 

In the end, i switched back to Router mode, but i would like to have Access Point mode working as some of my devices (Home Assistant) which are dependent on some devices from the WIFI network such as cameras, etc.

Any idea what could this be and how can i fix it ?

Here's also a picture of the ISP DHCP server :


Thank you,
Flagster

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#1
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10 Reply
Re:XE75 - Access Point Mode Issues
2025-07-03 07:03:44

  @Flagster 

Hi, thank you very much for the feedback.

On the main Deco XE75, apart from the ZTE F6605R, would there be other wired equipment connected via Ethernet cables?

Did you disable the WiFi on the ZTE F6605R?

 

"4. Wifi connection works and its online, but some websites don't work at all, and I can't access the main Router through WiFi devices."

--Would the wired PC be able to access these websites? Are there some specific sites or randomly different websites?

- If we temporarily disable the 2.4GHz band and leave 5GHz only, will the 5GHz WiFi work as expected?

 

Wait for your reply.

Best regards.

 

 

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Re:XE75 - Access Point Mode Issues
2025-07-03 09:09:46

  @David-TP 

 

Hello David,

 

On the main Deco nothing else is commected besides a wire from the ZTE to the Deco. The ZTE has 2 other devices commected to it (a Dell optiplex and a Synology NAS).

 

ZTE has wifi disabled.

 

I didnt test to see if the pc was able to access those websites. The websites are random, for example i can access google.com and search online, but a website such as SpeedTest tells me im offline.

 

I will try to disable the 2GHZ one and try again today.

 

Thank you,

Sorin

 

 

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Re:XE75 - Access Point Mode Issues
2025-07-03 11:11:26

  @David-TP 

 

Hello David,

Did some tests regarding the 2GHZ network. Initially after disabling it, it worked. To make sure it was not a fluke, i tried to do a couple of power cycles to make sure. Powering both the router and the Main Deco at the same time causes the same issue regardless if the 2GHZ network is active or not.

Rebooting only the Deco main unit does not fix the issue. You have to reboot both the router and the deco unit, and if the stars are aligned correctly, it will work. This is not an acceptable case as i don't have a UPS there and in case of a power failure, if nobody is at home to perform the ritual, all my devices will be starved of internet.

Switching the Deco units back to router mode, works as expected regardless of the timing of the power cycle (i can let the deco unit power fully before turning on my router and it works just fine).

What i observed, is that in Access Mode, it takes a lot longer for the Main deco in the hallway to detect and connect to the one on the second floor.

Some screenshots while i did the Access Point mode from some of my devices :

1. Conected to the WIFI Network in access mode while the issue appears, displays the network as being offline. If i disable wifi on my phone and use mobile data, it shows as online and lets me change settings etc.
 

2. Settings 

3. My mobile phone Wifi info connected to the Deco unit in Acess Point mode

4. Macbook Pro connected to the Deco unit in Access Point mode (has the same behaviour as the phone - sorry for the dirty screen, work computer)

5. Phone trying to access the main router

 

Please let me know if you have any solution for this, or if i could just somehow route my Dell connected to the main router so it can access the devices on the deco network.

Thank you,

Flagster

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Re:XE75 - Access Point Mode Issues
2025-07-03 19:31:47

  @David-TP 

 

Hello David,

Im adding here the log from the XE75 as well. From that i identified the following :

  • hostapd: ioctl[SIOCGIFINDEX]: No such device

  • Failed to open l2_packet interface for vlan bridge

  • smartip: open /tmp/is_online error

  • FAP mode clients disconnected

 

This suggests the Deco fails to correctly bridge Wi-Fi clients to the LAN after reboot, possibly due to VLAN or FAP mode instability.

Please let me know if i understood correctly. Could i have a faulty unit by any chance ?

Adding the log as a link here, due to the size : https://we.tl/t-S2c4Hk4y3y

Thanks,
Flagster

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Re:XE75 - Access Point Mode Issues
2025-07-03 19:54:03 - last edited 2025-07-03 20:08:18

  @David-TP 

Hello David,

Sorry for spamming so much, but im trying to find the cause of this issue.

What else have i tried :

  • Rotated the deco units around, placed the satellite one as the main and vice-versa. Same issue occurs. So its not a faulty unit (uless both of them are faulty)
  • Had a VM on a computer which had its own IP, removed that from the equation as well as sometimes it can cause issues. Same issue occurs.
  • Tried switching my computer to WiFi, computer works (can conect to the ZTE router), phone does not. Although both of them are connected to the same satellite.
  • Replaced the cable and used a different port from the ZTE. Issue persists.

 

I want to preface that the phone is not the only device which has this issue, my fiance's laptop is having the same issue with intermitent internet (Teams keeps randomly disconnecting on the calls for example).

As a backup for now, i set the old M4R's on the same router as a backup wifi connection. Didn't try to set them in Access point yet. Will try that one as well.

Im thinking of reverting to an older software version to see if that fixes the issue. Will wait for your reply before i do. Also, the hardware version is 2.0 EU.

Later Edit :
Switched the old M4R's to access point mode. Although the Deco app shows them offline when connected to their wifi, i can access the main router and the websites work just fine.

Thank you,
Flagster

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Re:XE75 - Access Point Mode Issues
2025-07-04 09:14:43

  @Flagster 

Hi, is the satellite Deco XE75 wirelessly connected to the main Deco XE75?

 

I saw there is only an IPV6 address on the mobile phone. The ZTE router web UI is 192.168.1.1. I think that is why only the mobile phone can't access the ZTE router and certain websites(which are also using IPV6 addresses).

The Deco App on the mobile phone might not be able to communicate with the TP cloud server when there is only an IPV6 address. But switching to mobile data, it would have a valid IPV4 and IPV6 address.

 

But there is a standard IPV4 address 192.168.1.33 on the Mac Pro. As there are 3 issues you have found on the mobile phone:

  • Randomly can't access certain websites
  • fail to access 192.168.1.1, the web UI of the ZTE router
  • Deco App reported network offline when it is on Deco WiFi

Since you said Mac had the same issue, do you refer to the first one only?

By the way, did both the mobile phone and the Mac Pro use to connect to the satellite XE75?

 

" Fiancé's laptop is having the same issue with intermittent internet (Teams keeps randomly disconnecting on calls, for example)."

I don't think it is similar to the above issue. But you can try to disable "Mesh Technology" for the laptop.

And it is also suggested to set the "Connection Preference" for the laptop, such as preferred band: 5GHz, preferred connected Deco: the nearest Deco XE75.

 

Thank you very much.

Best regards.

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Re:XE75 - Access Point Mode Issues
2025-07-04 09:25:38

  @David-TP 

 

Hello David,

 

The issue with the app on the phone makes sense, but Deco preventing me from accessing the main ZTE router does not. Same for accessing websites. Turning the ZTE wifi on, and connecting my phone to it directy, i am able to access both the router and the websites without any issues.

 

Mac has the same issue as in unable to access the ZTE and some websites. Both phone and mac connected to the main deco unit.

 

The issue with the mesh tehnology on the fiancee's laptop does not make any sense, as one of the deco units is on the floor level (right next to her laptop) and the second one a floor above. I dont think the deco would randomly switch to the upstairs one.

 

Also, these solutions does not explain why does these issues dont happen on router mode, but happens in access point mode.

 

No matter if the devices are connected to the sattelite, or the main deco unit, the issue persist. The only device that can access all websites and ZTE is my PC, which is connected to a sattelite. The PC works both on WiFi and on Ethernet.

 

Please review the logs and let me know wbat you find.

 

Thank you,

Flagster

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Re:XE75 - Access Point Mode Issues
2025-07-08 21:44:08 - last edited 2025-07-08 21:44:15

  @David-TP 

 

Hello David,

Any news about this ? For now i did a bit of a "hacky" way to make my setup work with the Deco system in router mode by adding a wifi usb adapter to my server and connecting it to the isolated IOT network, i was just wondering if this is being actively investigated and if you require more info from my side.

Thank you,
Flagster

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Re:XE75 - Access Point Mode Issues
2025-07-09 05:52:35

  @Flagster 

Hi, thanks for the feedback.

I didn't have any other suggestions and would like to forward your case to the senior engineers for further help.

Please check whether you can receive my email later.

Best regards.

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Re:XE75 - Access Point Mode Issues
2025-08-12 00:47:25

  @David-TP 

David-TP wrote

  @Flagster 

Hi, thanks for the feedback.

I didn't have any other suggestions and would like to forward your case to the senior engineers for further help.

Please check whether you can receive my email later.

Best regards.

I have the same issue. The problem is that after switching to access point mode the xe75 devices keeps the IP addresses from the router mode and therefore the xe75 devices are not reachable via the app. The mesh is working and the clients gets the right IP from the internet routers DHCP,. This is a firmware bug.

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