I have a TP-Link TD-W8970 v1.2(ADSL Modem/router) with OpenWrt 19.07.4 installed on it.
Everything looked good until yesterday. but today It keeps disconnecting from dsl network.
First I add this option:
option pppd_options 'debug' and then chck for logs and I see this:
No response to 5 echo-requests Serial link appears to be disconnected. Connect time 0.5 minutes.
Since my dsl line quality is not perfect(I've talked about it here before), I apply this config to prevent from disconnecting:
uci set network.wan.keepalive='150 15'
After that, the dsl link doe's not disconnect by it self anymore, but I still have
timed out. and the stranger point is it happens in a very fixed period of the time.
When I see my ping result(about 2000 icmp packet), I got 30 reply then 31 timed out and it goes on like a cycle and this fixed number never changes.