Sometime around June I upgraded my Archer C7 (main router, connected to internet and acting as DNS) from 19.07 to 21.02.
Since then , I am facing a few issues with my router
It started with errors like “ Maximum number of concurrent dns queries reached”, after a lot of research on the forum I increased it from 150 to 250, but still I have that issue (now with the message that more than 250 queries were triggered)
Last week i upgraded to newest release 21.02-rc4, and I have an addition problem that suddenly LAN ports **) are report as “down”, and a few seconds later they are up again (but this behavior sometimes occurs a few times in a 5 mins timeframe.)
**) update: It’s currently only port 1 having this issue, port 1 is the WAN port connected to the modem of my ISP
Yesterday, I tried to downgrade to 19.08 but then I could not use Luci anymore (errors like “luci config seems to be corrupt etc) by the way, I first tried to downgrade an AP, an Archer C7 v4, also now running on 21.02-rc4
So I went back to 21.02-rc4 (on the AP) but still facing issues on my router (the last “drop” was yesterday evening, in such case all devices are disconnected from internet for a minute or so.
Any ideas how to solve this?
By the way, on the AP running on 21.02 I donot see strange messages in the syslog, but ofcourse an AP is using limited functionality only