I have a AC2100 that connect to an old Modem/router (in bridge mode) (wan port of modem connect to internet port of router)
if i connect my NAS with lan cable , pppoe connection disconnect after few minutes.some time unplug lan is enough to connection back again.
it is not happen if i connect NAS with WiFi.
do you need any specific log or information to debug the problem?
OpenWrt 21.02.1
it is system log when i connect lan
Thu Dec 16 22:54:52 2021 kern.info kernel: [ 105.018511] mt7530 mdio-bus:1f lan3: Link is Up - 100Mbps/Full - flow control off
Thu Dec 16 22:54:52 2021 kern.info kernel: [ 105.026061] br-lan: port 3(lan3) entered blocking state
Thu Dec 16 22:54:52 2021 kern.info kernel: [ 105.031301] br-lan: port 3(lan3) entered forwarding state
Thu Dec 16 22:54:52 2021 daemon.notice netifd: Network device 'lan3' link is up
Thu Dec 16 22:54:53 2021 daemon.info dnsmasq-dhcp[4246]: DHCPREQUEST(br-lan) 192.168.1.37 -'NAS MAC ADDRESS That i remove'
Thu Dec 16 22:54:53 2021 daemon.info dnsmasq-dhcp[4246]: DHCPACK(br-lan) 192.168.1.37 'NAS MAC ADDRESS That i remove' NAS
Thu Dec 16 22:55:24 2021 daemon.info pppd[3761]: No response to 2 echo-requests
Thu Dec 16 22:55:24 2021 daemon.notice pppd[3761]: Serial link appears to be disconnected.
Thu Dec 16 22:55:24 2021 daemon.info pppd[3761]: Connect time 1.9 minutes.
Thu Dec 16 22:55:24 2021 daemon.info pppd[3761]: Sent 623714 bytes, received 4240667 bytes.
Thu Dec 16 22:55:24 2021 daemon.notice netifd: Network device 'pppoe-wan' link is down
Thu Dec 16 22:55:24 2021 daemon.notice netifd: Interface 'wan' has lost the connection
Thu Dec 16 22:55:24 2021 daemon.notice netifd: Interface 'my vpn interface' has lost the connection
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: reading /tmp/resolv.conf.d/resolv.conf.auto
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: using only locally-known addresses for domain test
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: using only locally-known addresses for domain onion
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: using only locally-known addresses for domain localhost
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: using only locally-known addresses for domain local
Thu Dec 16 22:55:24 2021 daemon.info dnsmasq[4246]: using only locally-known addresses for domain invalid
Thu Dec 16 22:55:24 2021 daemon.notice netifd: Network device 'my vpn interface' link is down
system log is so long but some part of that maybe relate
Thu Dec 16 22:55:30 2021 kern.info kernel: [ 143.139883] mt7530 mdio-bus:1f wan: configuring for phy/gmii link mode
Thu Dec 16 22:55:30 2021 kern.info kernel: [ 143.147252] 8021q: adding VLAN 0 to HW filter on device wan