Connection drops periodically for a few seconds

ktd_sproud · May 2023

Hello everyone,

I used 2 ZyXEL devices:

Firewall: USG20-VPN
Switch: GS1920-24HP

Two devices have been Nebula connected.

But my network is unstable, the connection drops periodically for a few seconds, maybe mili seconds, and then back to normal. This problem occurs continuously, about 10 times in 1 hour or more.

This is the result when I try to ping the default gateway:

I don't know why, please help me.

Thank you.

PeterUK · May 2023

Maybe bad cable?

ktd_sproud · May 2023

https://community.zyxel.com/en/discussion/comment/51720#Comment_51720

Thanks for your answer. The cable has been changed, but the issues do not fix.

Any solution for this?

PeterUK · May 2023

You could disable Green Ethernet on the switch.

Can you test without the switch to the USG port?

ktd_sproud · May 2023

https://community.zyxel.com/en/discussion/comment/51737#Comment_51737

Thanks, Peter.

But I can't find the settings for disabling Green Ethernet on the switch.

I using Nebula cloud.

WJS · May 2023

If connect FLEX without swtich, the issue still exist ?

ktd_sproud · June 2023

https://community.zyxel.com/en/discussion/comment/51768#Comment_51768

Oh, I think the issue from firewall. the issue still exist with only firewall.
Any solution for this issue? Thank you

Zyxel_Kevin · June 2023

Hi @ktd_sproud ,

Greeting forum, Have you changed network cable ?

Please kindly provide diag-info by private message. Thank you

Connection drops periodically for a few seconds

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