I have a Linksys wrt1900acs rev.2 router and I recently installed the latest version of OpenWRT (19.07.4)
I then set it up, leaving everything to their defaults save for configuring my IPv4 WAN interface with my PPPoE credentials.
It works as expected for a few hours and then I start seeing a lot of packet loss when doing anything, even transporting things through my LAN that having nothing to do with the WAN interface.
The packet loss I experience is usually something along the lines of this:
say I ping another PC on my network. I'd get 8 consecutive packets that deliver and 3 consecutive packets that fail.
I power cycle it but the issue persists. (issue resumes immediately, no few hours wait here)
I tried resetting to defaults but the issue still persists also. (again, issue resumes immediately)
The only time I can get it to work properly again for a few hours before breaking again is when I reset it to defaults and then quickly power cycle it.
I really don't see why this is happening.
Any help is appreciated.
the connection is wired to both devices that I tried to ping to and from.
This is weird... LAN to LAN communication happens in the embedded switch, it's almost hardware-only, and should not be affected by the firmware installed.
I just realized I forgot to mention this doesn't happen with stock firmware.
And I tried it with another pair of devices and its still there.
Can you try downgrading to 19.07.3?
So after a lot of hours of troubleshooting, it turns out I was an idiot. It turns out I made the same mistake in network configuring all the arch Linux PCs that I was using to test this. I think had 2 DHCP clients running at the same time somehow and apparently, the stock router firmware was covering for me. Thanks to OpenWRT now I can have things configured properly. Finally pushed to getting around to manually configuring static IPs for my network.
So I think it's sorted out now.
Thanks, @trendy, @eduperez for your quick answers and sorry for taking your time.
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