[LPS8V2] Basic station disconnection after network outage

[Steve Yon]

Hi,

It appears that the basicstation on LPS8v2 (last FW) lose its connection to server (AWS) when network outage (switch Ethernet -> 4g) happen.
I tried several time, I still can access to the gateway with wireguard (so 4g connection is UP), when I replug ethernet cable the link re-establish quite instantly.

Best regards,

Steve

[kilight]

Hi, Steve

We've reproduced the issue in the office and are trying to check and fix it
I'll tell you the solution once it's fixed.

Best Regards

Kilight

Technical Support Engineer

 

Dragino Technology Co., Limited

Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad

LongCheng Street, LongGang District ; Shenzhen 518101,China

Direct: +86 755 86610829 |Fax: +86 755 86647123

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发件人：Steve Yon <stev...@co-assist.fr>

发送时间：2024年8月30日(星期五) 00:27

收件人："Dragino-user"<dragin...@googlegroups.com>

主　题：[LPS8V2] Basic station disconnection after network outage

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[Steve Yon]

Hi there,

We fix the issue on our local gateway by modifying the network manager,
We added a new configuration file  "/etc/NetworkManager/conf.d/20-connectivity.conf "
Containing 

[connectivity]

uri=http://www.google.com/generate_204

interval=60

So the network manager could now be aware of a leak of connectivity.

I let you judge the relevance of the fix.

Best regards,

Steve

[Steve Yon]

Hi,

Any news ? new packages are available for lps8v2 but the change log has not been updated. Did you fix it ?

Best regards,

Steve

[xiaoye]

Hi, Steve,

I checked that the issue is due to NetworkManger affecting the systemd-resolved DNS configuration after the network switch.

We have updated an update to fix this DNS issue via auto-update

Note: The gateway needs to be rebooted once after the update

Best Regards

YE XIAO

Technical Support Team Manager

Dragino Technology Co., Limited
Room 1101, City Invest Commercial Center,  No.546 QingLinRoad
LongCheng Street, LongGang District; Shenzhen 518116, China

Direct: +86 755 86610829 |Fax: +86 755 8664712

------------------------------------------------------------------

From:Steve Yon <stev...@co-assist.fr>

Send Time:2024年9月19日(星期四) 23:37

To:"Dragino-user"<dragin...@googlegroups.com>

Subject:Re: [LPS8V2] Basic station disconnection after network outage

To view this discussion on the web visit https://groups.google.com/d/msgid/dragino-user/f258a713-5d84-48f4-bd63-75241d4168a4n%40googlegroups.com.

[Steve Yon]

Hi Ye,

I've just tested the patch and I'm sorry but it does not work. 

Hardware tested: LPS8nV2 up-to-date

Scenario n°1 - using only cellular - OK:
All is all right

Scenario n°2 - ethernet & cellular - OK:
An ethernet cable with internet connectivity is plug, the cellular is well configured.
I unplugged the ethernet cable, and the gateway switch went from ethernet to cellular, when I replug the cable the gateway switch did as well.

Scenario n°3 - ethernet from a switch & cellular - FAIL:
To simulate a network outage the gateway is connected through ethernet to a switch which broadcasts the internet.
All works well but if I unplug the internet source from the switch (ethernet between the gateway and the switch is still), the switch from ethernet to 4g does not happen.

So I update the gateway by adding only the file  "/etc/NetworkManager/conf.d/20-connectivity.conf " containing. 

[connectivity]
uri=http://www.google.com/generate_204
interval=60

and the scenario n°3 succeed. My conclusion is that it's a connectivity issue, the interface does not succeed to detect the network outage.

Best regards

Steve

[kilight]

Hi, Steve,

I have tested that 4g and ETH network switching is working properly.

Can you share the System --> Package Management page for us to check? Check what version of dragino-ui is?

Best Regards

Kilight

Technical Support Engineer

 

Dragino Technology Co., Limited

Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad

LongCheng Street, LongGang District ; Shenzhen 518101,China

Direct: +86 755 86610829 |Fax: +86 755 86647123

------------------------------------------------------------------

From:Steve Yon <stev...@co-assist.fr>

Send Time:2024年9月23日(星期一) 17:45

To view this discussion on the web visit https://groups.google.com/d/msgid/dragino-user/4ad5ae40-de1f-4bdc-ae42-57610a38320cn%40googlegroups.com.

[Steve Yon]

Hi Kilight, 

I've just checked, the version of dragino-ui is 20-09-2024 (see attached screenshot).

To make sure we understand each other, I've drawn up a diagram. You will find it attached


Best regards,

Steve

[xiaoye]

Hi Steve,

Thanks for the feedback!

We will add this connection check to the new update.

Best Regards

YE XIAO

Technical Support Team Manager

Dragino Technology Co., Limited
Room 1101, City Invest Commercial Center,  No.546 QingLinRoad
LongCheng Street, LongGang District; Shenzhen 518116, China

Direct: +86 755 86610829 |Fax: +86 755 8664712

------------------------------------------------------------------

From:Steve Yon <stev...@co-assist.fr>

Send Time:2024年9月24日(星期二) 17:10

To view this discussion on the web visit https://groups.google.com/d/msgid/dragino-user/39e53632-069a-44c3-a9a5-6cddcfc17f55n%40googlegroups.com.

[Steve Yon]

Nice thank you