S7 Goes down every few days

S7 Goes down every few days

S7 Goes down every few days
S7 Goes down every few days
3 weeks ago
Model: Deco S7  
Hardware Version: V1
Firmware Version: 1.5.2 Build 20240927 Rel. 68997

My deco network occassionally goes down - restarts and then recovers itself in few minutes. It repeat in 3-7 days cycles (average 5), every time it takes 10-20 minutes to recover. I can see exact time when it occured in the device logs, since there is an expception.

 

Providing mentioned logs below
```

1 DEBUG Exception:|2025-02-25 20:33:25| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

2 DEBUG Exception:|2025-03-01 17:37:08| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

3 DEBUG Exception:|2025-03-07 14:02:08| [a-10]PC=4050f120,LR=4050fa90 ->[tposTaskEntry+64]->[inetd+2a8]->[tmpdClientHandle+170]

4 DEBUG Exception:|2025-03-13 20:53:08| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

5 DEBUG Exception:|2025-03-17 6:56:05| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

6 DEBUG Exception:|2025-03-21 15:06:24| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]
7 DEBUG Exception:|2025-03-26 7:28:49| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

8 DEBUG Exception:|2025-04-04 16:10:06| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]

```

 

I'm running my network (3 deco units) in Router Mode with wired backhaul and static IP connection to ISP router. On ISP router, I have DHCP address reservation for main deco. The connection loss is global, so no device on my network has access to internet and the main deco is not accessible from local network until it restarts. I have tried connecting to the ISP router by cable when the deco network was down and it was functioning normally. 

I want to ask if anyone else experienced similar problem and how to solve it. Asked support before, but without any helpful answer. 

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#1
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6 Reply
Re:S7 Goes down every few days
3 weeks ago

  @k0nci 

Hi, Have you tried to use the "Dynamic IP" connection type, then configure Address Reservation on the ISP router for Deco(or don't set the Address Reservation profile for testing)?

Or have you tried to set Deco into "Access Point" mode?

 

By the way, may I know your internet service provider and the model number of the ISP Wi-Fi router?

 

Wait for your reply.

Best regards.

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#2
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Re:S7 Goes down every few days
a week ago

  @David-TP 

Hello,

 

thank you for your reply. I will try "Dynamic IP" connection type and let you know after few days.

 

Didn't try AP mode since I want to use Deco app to configure different address reservations, and other stuff. With AP mode, I would need to configure it on ISP router which I want to avoid.

 

My ISP is Slovak Telekom and device seems to be Huawei HG8145V5.

 

Best regards.

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#3
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Re:S7 Goes down every few days
a week ago

  @k0nci 

Thank you, and will wait for your update.

Best regards.

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#4
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Re:S7 Goes down every few days
Tuesday - last edited Tuesday

Hello @David-TP

 

so it just happened again. My current connection settings are below

 

I can remove the DHCP Reservation from ISP router, but I doubt that it would help. It really seems to me like some buffer overflow or something, because this time the deco network became unstable first (latency went up and down, some packets where totally lost). I managed to login to the main deco and checked the logs, exception was not there yet during the unstable state. I have connected to ISP router by cable, everything was fine there. Then the deco network restarted itself, exception appeared in logs and network became stable again. 

Last Error:
```
8 DEBUG Exception:|2025-04-22 8:51:20| [6-10]PC=4041fb9c,LR=4050c250 ->[tposTaskEntry+64]->[monitor+1cc]->[ctrlInstrDispatch+100]->[handle_probe+8c]->[probe+38]
```

 

Best regards.

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#5
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Re:S7 Goes down every few days
Wednesday

  @k0nci Hi, may I know how many devices are connected to Dec S7? Would there be a lot of 2.4GHz smart home devices?

 

It is also suggested to set Deco S7 into "Access Point" mode and still use Huawei HG8145V5 as the DHCP/NAT server in case its CPU is not powerful enough to handle all the DHCP, as well as other network traffic.

 

And Deco S7_1.5.2 supports "Reboot Schedule" under Deco APP>More>System. It is also suggested to set a daily reboot schedule to check whether it helps improve network stability.

Best regards.

 

 

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#6
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Re:S7 Goes down every few days
Yesterday

Hello @David-TP,

 

there are around seven IOT devices connected through 2.4GHz.

 

I want to operate deco network in router mode, since it's then easier for me to maintain it and navigate my parents in case something is wrong and I'm not at home. But thank you for your suggestion, will think about it.

 

I wanted to avoid daily reboot, since it will produce quite lot of downtime for my network. We are running some automations on IOT devices and I'm not sure what it will done to them. Although I know that it's recommended to reboot, I'm operating another network in my place using two X50s and it can run stabily for months without reboot.

 

Best regards.

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#7
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