Hi,
Recently bought the rt-ac58u to replace the dlink router provided by TM. I am facing intermittent WAN disconnection. Sometime after few hours, sometime after almost 1 day since the last connected session. There is no problem with the DSL it seems (the DSL light is on). I have raised to TM few times, they also reset the port for me but still the same. Could this be any setting on my Asus router?
Firmware version: 3.0.0.4.380_8119
Below is the log snippet observed:
Jan 10 21:57:28 kernel: Switching to Tx Mode-1 Threshold 0
Jan 10 21:57:30 kernel: Switching to Tx Mode-1 Threshold 34
Jan 10 22:00:09 kernel: Switching to Tx Mode-1 Threshold 0
Jan 10 22:00:09 kernel: Switching to Tx Mode-1 Threshold 34
Jan 10 22:02:47 pppd[2788]: Serial link appears to be disconnected.
Jan 10 22:02:49 WAN Connection: Fail to connect with some issues.
Jan 10 22:02:49 stop_nat_rules: apply the redirect_rules!
Jan 10 22:02:53 pppd[2788]: Connection terminated.
Jan 10 22:02:53 pppd[2788]: Modem hangup
Jan 10 22:03:03 pppd[2788]: Connected to f0:1c:2d:22:2f:cc via interface vlan500
Jan 10 22:03:03 pppd[2788]: Connect: ppp0 <--> vlan500
Jan 10 22:03:07 pppd[2788]: PAP authentication succeeded
Jan 10 22:03:07 pppd[2788]: peer from calling number F0:1C:2D:22:2F:CC authorized
Jan 10 22:03:10 pppd[2788]: Connection terminated.
Jan 10 22:03:10 pppd[2788]: Modem hangup
Jan 10 22:03:20 pppd[2788]: Connected to f0:1c:2d:22:2f:cc via interface vlan500
Jan 10 22:03:20 pppd[2788]: Connect: ppp0 <--> vlan500
Jan 10 22:03:20 pppd[2788]: PAP authentication succeeded
Jan 10 22:03:20 pppd[2788]: peer from calling number F0:1C:2D:22:2F:CC authorized
Jan 10 22:03:24 pppd[2788]: Connection terminated.
Jan 10 22:03:24 pppd[2788]: Modem hangup
Jan 10 22:03:34 pppd[2788]: Connected to f0:1c:2d:22:2f:cc via interface vlan500
Jan 10 22:03:34 pppd[2788]: Connect: ppp0 <--> vlan500
Jan 10 22:03:34 pppd[2788]: PAP authentication succeeded
Jan 10 22:03:34 pppd[2788]: peer from calling number F0:1C:2D:22:2F:CC authorized
Jan 10 22:04:11 rc_service: httpd 534:notify_rc start_autodet
Jan 10 22:04:16 rc_service: httpd 534:notify_rc start_autodet
Jan 10 22:04:24 kernel: Switching to Tx Mode-1 Threshold 0
Jan 10 22:04:27 kernel: Switching to Tx Mode-1 Threshold 34
Jan 10 22:04:39 rc_service: httpd 534:notify_rc restart_wan_if 0
Jan 10 22:04:39 pppd[2788]: Connection terminated.
Jan 10 22:04:42 rc_service: httpd 534:notify_rc start_webs_update
Jan 10 22:04:42 rc_service: waitting "restart_wan_if 0" via httpd ...
Jan 10 22:04:42 pppd[5536]: pppd 2.4.7 started by admin, uid 0
Jan 10 22:04:42 pppd[5536]: Connected to f0:1c:2d:22:2f:cc via interface vlan500
Jan 10 22:04:42 pppd[5536]: Connect: ppp0 <--> vlan500
Jan 10 22:04:43 pppd[5536]: PAP authentication succeeded
Jan 10 22:04:43 pppd[5536]: peer from calling number F0:1C:2D:22:2F:CC authorized
Jan 10 22:04:46 pppd[5536]: Connection terminated.
Jan 10 22:04:46 pppd[5536]: Modem hangup
Jan 10 22:04:54 rc_service: zcip 5617:notify_rc start_firewall
Jan 10 22:04:54 zcip client: configured 169.254.219.180
Jan 10 22:04:56 pppd[5536]: Connected to f0:1c:2d:22:2f:cc via interface vlan500
Jan 10 22:04:56 pppd[5536]: Connect: ppp0 <--> vlan500
Jan 10 22:04:57 start_nat_rules: apply the nat_rules(/tmp/nat_rules__vlan500)!
Jan 10 22:04:59 pppd[5536]: PAP authentication succeeded
From the log I can see there is a message saying the "Serial link appears to be disconnected". This mean there is a disconnection from the modem side.
Jan 10 22:02:47 pppd[2788]: Serial link appears to be disconnected.
You can try changing the cable between the router and the modem first.
And can you save me the full system log? Because you mention it disconnected quite often.