Can't connect to T-Mobile TM-AC1900 (Asus RT-AC68) WiFi until router is rebooted

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hwcila

Commendable
Oct 18, 2016
2
0
1,510
Hello All,

Recently I've been having an issue connecting to my TM-AC1900 WiFi under rather specific conditions:

- The issue only is evident in the kitchen, on the other side of the first floor from where the router is (in the garage)
- The iPhone WiFi indicator may show 2-4 WiFi bars, but I'm not able to ping my router (192.168.1.1)
- WiFi will sometimes disconnect, and then re-prompt for WiFi password but not be able to join
- Tried WiFi Analyzer on an Android device and there are not obvious conflicting SSIDs. In fact, our router is the only network that shows as being available to connect to.
- Rebooting the router seems to fix the issue. After rebooting, I can connect to the WiFi in the kitchen and network latency is back to normal

If there were weak signal or interference, I'd expect the issues to persist. What confuses me is that rebooting the router seems to fix the issue in this one area of the house (I haven't experienced it in other areas of the house). Any ideas on what could be happening or if there is a persistent fix for this?

Thanks.
 
Solution
Ralston18
NTP (Network Time Protocols).

Could be related but, in all honesty, since I do not know what is normal for your router I am not sure if that log entry is related to the problem.

However some internet research using "ntp updates Asus TM-AC1900" found websites like this:

http://www.bleepingcomputer.com/forums/t/610629/tm-ac1900-router-drops-connections-at-night/

Note the reference to changing the DHCP lease time.

You may have found a clue so continue to pursue accordingly. Read a few other things and see if there is some consensus on a NTP issue or perhaps something else. Do not be in a hurry to change the first fix that you find. (Including the DHCP lease time.)

Then try any related changes but only one at a time and be sure...
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Ralston18

Ralston18

Titan
Moderator
Oct 11, 2014
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Take a look at the router's logs. Look for entries that occur just before or at the time of the connection loss.

However, be aware that the router logs may not be enabled. So you might have to enable the logs and watch for a couple of days.

Also check the router's User Manual/Guide and familarize yourself with the indicator/LED lights. Watch what they do as well.

If you do not have the manual check this link:

https://www.manualslib.com/manual/1075214/Asus-Tm-Ac1900.html?page=14#manual

The objective is to identify some specific error or event that leads to the connection loss.
 
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H

hwcila

Commendable
Oct 18, 2016
2
0
1,510


Thanks for the response. The System Log/General Log doesn't seem to have much information. The only entries during the time I was having the issues involve NTP updates (ntp: start NTP update).
 
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Ralston18

Ralston18

Titan
Moderator
Oct 11, 2014
34,816
3,309
146,290
NTP (Network Time Protocols).

Could be related but, in all honesty, since I do not know what is normal for your router I am not sure if that log entry is related to the problem.

However some internet research using "ntp updates Asus TM-AC1900" found websites like this:

http://www.bleepingcomputer.com/forums/t/610629/tm-ac1900-router-drops-connections-at-night/

Note the reference to changing the DHCP lease time.

You may have found a clue so continue to pursue accordingly. Read a few other things and see if there is some consensus on a NTP issue or perhaps something else. Do not be in a hurry to change the first fix that you find. (Including the DHCP lease time.)

Then try any related changes but only one at a time and be sure you know how to and can reverse any given change.

Also log into your router and see what firmware version is installed. The current version may be old or have something that is now a "bug" with respect to your network environment.
 
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