Netifd: Interface 'wan' has link connectivity loss

Installing and Using OpenWrt
1

Hello folks

I am seeing this message on my x86 OpenWRT router frequently.

ISP-Fiber-modem ---- CAT6 ---- X86 OpenWRT

A similar issue on this forum has been rootcaused to bad cable, but replacing cable didn't help in my case.
Wonder what is causing this.
Sometimes these messages stop for a day at a stretch.
There is a minuscule chance is that my new cable is also faulty.
But apart from that any possible theories?
I am planning to change ports on my router.
Also, suppose there is loss on fiber side of the ISP modem, it will not cause link loss on the Gigabit copper side, am I right?
I mean this looks like physical layer connection loss [i.e. port powering off].

Tue Mar 5 16:36:14 2024 daemon.notice netifd: Interface 'wan' has link connectivity loss
Tue Mar 5 16:36:17 2024 daemon.notice netifd: Interface 'wan' has link connectivity
Tue Mar 5 16:42:03 2024 daemon.notice netifd: Interface 'wan' has link connectivity loss
Tue Mar 5 16:42:06 2024 daemon.notice netifd: Interface 'wan' has link connectivity
Tue Mar 5 18:18:21 2024 daemon.notice netifd: Interface 'wan' has link connectivity loss
Tue Mar 5 18:18:24 2024 daemon.notice netifd: Interface 'wan' has link connectivity

2

I'd do the same, rotate them, see if the same occurs again.

or try an USB ethernet port.

1 Like
3

Thanks, these moral supports mean a lot in times of crisis. :slight_smile:

1 Like
4

Ok...so even after changing the port on my router, the issue persists.

I now suspect an issue with ISP fiber-modem Ethernet port.
Any other possibility folks?

5

Put a dumb switch between the modem and the router, temp or permanent, then the router won't notice the dips.
They'll still happen though.

6

Yeah, these dips are causing real issues, like video call freeze.

Seems I have to prove it by connecting a laptop directly to ISP modem and continuous ping.

7

It can be done from the router, but it might be a good idea to rule it out.