TP Link AC1750 Archer 7 frequent connection drops from LAN

[anbu13]

I have a TP Link AC1750 Archer 7 v4 connected to the modem. Each day I have this problem, Internet works fine but suddenly Wired & Wireless doesn't work. Means Devices can't past the router looked by the tracert command. But the weird thing is meanwhile I can access a computer through Teamviewer from WAN. I can ping my WAN IP from other networks. Confirmed with ISP they had no connection issues from their end. They are pointing to my router. A restart on the router gets the everything back in working.

I can log in to the Router while this problem happens & I can see the router gets the WAN IP from ISP.

I have tried everything on the internet.

1) Hardware NAT disabled
2) DNS manually configured on DHCP
3) Upgraded the latest firmware

Nothing helps.

 

[Ralston18]

Check the power connections for both the modem and router. Make sure that there are no loose plugs.

Try another known working Ethernet cable between modem and router.

Check the router's logs if available and enabled. Look for error codes and warnings.

 

[anbu13]

Check the power connections for both the modem and router. Make sure that there are no loose plugs.

Try another known working Ethernet cable between modem and router.

Check the router's logs if available and enabled. Look for error codes and warnings.

Yes, the cables are new and fine. I'm believing there must be something with the firmware.

 

[bill001g]

It does sound like a router bug. If you are at the latest firmware then there is no simple fix for a actual bug. My normal recommendation especially with tplink stuff is to load third party firmware...at least you get different bugs. openwrt supports the older versions of that router but it appears it is still to new a hardware revision. There is lots of discussion about loading other hardware version but it would take lots of reading forums.

As a last resort try to factory reset the router on the chance you accidentally clicked on some configuration option you do not know about.

It really does sound like a nat issue and the nat acceleration when it first came out caused strange issue but you have already tried the trick of disabling it. You want that feature on if you can especially if you have a internet connection that can run over 100mbps.

 

[anbu13]

It does sound like a router bug. If you are at the latest firmware then there is no simple fix for a actual bug. My normal recommendation especially with tplink stuff is to load third party firmware...at least you get different bugs. openwrt supports the older versions of that router but it appears it is still to new a hardware revision. There is lots of discussion about loading other hardware version but it would take lots of reading forums.

As a last resort try to factory reset the router on the chance you accidentally clicked on some configuration option you do not know about.

It really does sound like a nat issue and the nat acceleration when it first came out caused strange issue but you have already tried the trick of disabling it. You want that feature on if you can especially if you have a internet connection that can run over 100mbps.

I have checked again now when the problem happens. All the wired & wireless(laptop,desktop & mobileS) connections can't access any sites. So tried nslookup to see if anything with the DNS. As I typed nslookup in cmd I get timed out error 2 seconds on DNS Server. Both the forward and reverse DNS queries doesn't work.

So, I typed the IP address of google.com directly into the browser that doesn't too work but I can ping that IP address. After changing the google public DNS to Open DNS server in the router then it works fine with all laptop, desktops and mobiles. I'll let it run for a couple of days & see if there is any problem again.