Hi,
I have internet connection intermittent issue on my router lately. Used to work fine before but not recently. I've upgrade to the latest firmware and hard reset but still the same.
Can you help me?

Router model : RT-N14UHP
Firmware version : 3.0.0.4.380_8015

This is the log i manage to capture from the router :
Nov 25 00:21:16 pppd[281]: Serial link appears to be disconnected.
Nov 25 00:21:17 WAN Connection: Fail to connect with some issues.
Nov 25 00:21:17 stop_nat_rules: apply the redirect_rules!
Nov 25 00:21:22 pppd[281]: Connection terminated.
Nov 25 00:21:22 pppd[281]: Modem hangup
Nov 25 00:21:47 pppd[281]: Connected to 00:00:5e:00:01:05 via interface vlan500
Nov 25 00:21:47 pppd[281]: Connect: ppp0 <--> vlan500
Nov 25 00:22:20 pppd[281]: No response to PAP authenticate-requests
Nov 25 00:22:26 pppd[281]: Connection terminated.
Nov 25 00:22:27 pppd[281]: Modem hangup
Nov 25 00:22:37 pppd[281]: Connected to 00:00:5e:00:01:05 via interface vlan500
Nov 25 00:22:37 pppd[281]: Connect: ppp0 <--> vlan500
Nov 25 00:23:10 pppd[281]: No response to PAP authenticate-requests
Nov 25 00:23:16 pppd[281]: Connection terminated.
Nov 25 00:23:16 pppd[281]: Modem hangup
Nov 25 00:23:26 pppd[281]: Connected to 00:00:5e:00:01:05 via interface vlan500
Nov 25 00:23:26 pppd[281]: Connect: ppp0 <--> vlan500
Nov 25 00:23:29 pppd[281]: PAP authentication succeeded
Nov 25 00:23:29 pppd[281]: peer from calling number 00:00:5E:00:01:05 authorized
Nov 25 00:23:29 pppd[281]: local IP address 219.92.211.117
Nov 25 00:23:29 pppd[281]: remote IP address 219.92.215.254
Nov 25 00:23:29 pppd[281]: primary DNS address 202.188.18.188
Nov 25 00:23:29 pppd[281]: secondary DNS address 1.9.1.9
Nov 25 00:23:29 rc_service: ip-up 1132:notify_rc start_firewall
Nov 25 00:23:29 miniupnpd[999]: shutting down MiniUPnPd
Nov 25 00:23:29 start_nat_rules: apply the nat_rules(/tmp/nat_rules_ppp0_vlan500)!
Nov 25 00:23:30 rc_service: ip-up 1132:notify_rc stop_upnp
Nov 25 00:23:30 rc_service: waitting "start_firewall" via ip-up ...
Nov 25 00:23:30 miniupnpd[1168]: version 1.9 started
Nov 25 00:23:30 miniupnpd[1168]: HTTP listening on port 49740
Nov 25 00:23:30 miniupnpd[1168]: Listening for NAT-PMP/PCP traffic on port 5351
Nov 25 00:23:31 rc_service: ip-up 1132:notify_rc start_upnp
Nov 25 00:23:31 rc_service: waitting "stop_upnp" via ip-up ...
Nov 25 00:23:31 miniupnpd[1168]: shutting down MiniUPnPd
Nov 25 00:23:32 ddns update: ez-ipupdate: starting...
Nov 25 00:23:32 miniupnpd[1172]: version 1.9 started
Nov 25 00:23:32 miniupnpd[1172]: HTTP listening on port 48460
Nov 25 00:23:32 miniupnpd[1172]: Listening for NAT-PMP/PCP traffic on port 5351
Nov 25 00:23:32 ddns update: connected to nwsrv-ns1.asus.com (103.10.4.108) on port 80.
Nov 25 00:23:32 WAN Connection: WAN was restored.
Nov 25 00:23:35 ntp: start NTP update
Nov 25 00:23:35 ddns update: Asus update entry:: return: HTTP/1.1 200 OK^M Date: Fri, 24 Nov 2017 16:23:32 GMT^M Server: Apache^M X-Powered-By: PHP/5.6.30^M Content-Length: 0^M Connection: close^M Content-Type: text/html; charset=UTF-8^M ^M
Nov 25 00:23:35 ddns update: retval= 0, ddns_return_code (,200)
Nov 25 00:23:35 ddns update: asusddns_update: 0
Nov 25 00:23:35 ddns: ddns update ok


Thanks!