Orbi WiFi 7 RBE973
Reply

No Internet on LAN Ports WiFi fully connectivity

divonc
Tutor

No Internet on LAN Ports WiFi fully connectivity

I am stumped. I have full internet connectivity via WiFi but “no internet” via the hard wired LAN ports. Here is the summary:

  • Both the R7000 and R6800 were fully functioning routers
  • Previously had internet service with ATT via fiber at Gb speed
  • Moved and now have cable internet with Spectrum a 100 Mb speed (very sad)
  • Laptop plugged directly into cable modem everything works fine no connectivity issues.
  • Add either router R7000/R6800 and I get full connectivity via WiFi connections, but no connectivity via any of the 4 hardwired LAN ports. Browser indicates "DNS Probe Finished Bad Config" Error. Networking icon in low right shows “no internet". Troubleshooting in Windows Networking indicates issues with DNS Server.
  • Appropriate LAN LEDs (those with connections) illuminate accurately in my case white. LEDs on laptop Ethernet adapter flash so the ports seem to be good. Would be strange is all 4 LAN ports on 2 different routers went bad.
  • I can access the router via the LAN port at 192.168.1.1.

Troubleshooting actions:

  • PC/Laptop connected directly to cable modem – no issues – full connectivity
  • Added R7000 router - Wifi connection to internet works fine, no connectivity on LAN
  • Swapped R7000 with R6800 - Wifi connection to internet works fine, no connectivity on LAN
  • Reset (pushed and held reset switch) for both R7000 and R6800 but no change from above behavior WiFi Good LAN bad
  • Tried multiple Ethernet cables – no change
  • Tried DNS settings on routers using both “get from ISP” as well as Google DNS 8.8.8.8, 8.8.4.4 – still doesn’t work.

I am truly baffled. The only change from two fully functioning routers to two routers with no LAN connectivity is that I switched ISPs from ATT to Spectrum (previously Charter). But connecting to the interent via direct connect to the modem on the modem's LAN port works just fine. I also don’t understand why I have no issues with these routers when connecting via WiFi and yet the hardwired LAN connection cannot seem to access the internet. Using Windows 10.

 

I appreciate any suggestions you might have.

Model: R6700|Nighthawk AC1750 Smart WiFi Router,R6800|Nighthawk AC1900 Smart WiFi Router
Message 1 of 6

Accepted Solutions
divonc
Tutor

Re: No Internet on LAN Ports WiFi fully connectivity

Finally figurred it out - pretty simply. There was a non-valid hard-coded DNS address on the IPv4 Ehternet adapter. Everything cleared up when I removed it.

View solution in original post

Message 6 of 6

All Replies
antinode
Guru

Re: No Internet on LAN Ports WiFi fully connectivity

   The easiest explanation (for wireless working and wired not working)
would be that your wireless devices/interfaces are configured to use
DHCP to get their network data, but the wired devices/interfaces are
configured with manual/static data which are incompatible with the
Netgear routers (wrong subnet, for example).

> [...] Using Windows 10.

   Open a Command Prompt (CMD.EXE) window, type an "ipconfig" command
there, and copy+paste the results here.  Or, compare the addresses used
by a wireless device with those used by a wired device.

Message 2 of 6
divonc
Tutor

Re: No Internet on LAN Ports WiFi fully connectivity

Here is the ipconfig data

Microsoft Windows [Version 10.0.15063]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\Main>ipconfig

Windows IP Configuration


Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::45e7:c9b6:ba9b:4ac7%16
IPv4 Address. . . . . . . . . . . : 192.168.1.6
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

Wireless LAN adapter Local Area Connection* 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Local Area Connection* 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Ethernet adapter Ethernet 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Ethernet adapter Ethernet 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::f8a6:f558:71a:4ca0%12
IPv4 Address. . . . . . . . . . . : 192.168.1.8
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:1464:38e5:3f57:fef9
Link-local IPv6 Address . . . . . : fe80::1464:38e5:3f57:fef9%7
Default Gateway . . . . . . . . . : ::

C:\Users\Main>

C:\Users\Main>

C:\Users\Main>

 

Message 3 of 6
antinode
Guru

Re: No Internet on LAN Ports WiFi fully connectivity

> Ethernet adapter Ethernet:
>
> Connection-specific DNS Suffix . :
> Link-local IPv6 Address . . . . . : fe80::45e7:c9b6:ba9b:4ac7%16
> IPv4 Address. . . . . . . . . . . : 192.168.1.6
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . : 192.168.1.1

   Looks ok to me.

> Wireless LAN adapter Wi-Fi:
>
> Connection-specific DNS Suffix . :
> Link-local IPv6 Address . . . . . : fe80::f8a6:f558:71a:4ca0%12
> IPv4 Address. . . . . . . . . . . : 192.168.1.8
> Subnet Mask . . . . . . . . . . . : 255.255.255.0
> Default Gateway . . . . . . . . . : 192.168.1.1

   Also ok, but if they'e both active at one time, then everyone could
get confused.

> The easiest explanation [...]

   Clearly not what you're seeing.  But one system with two interfaces
on the same subnet could be troublesome.  What happens if you disable
the wireless interface (on the Windows system)?

Message 4 of 6
divonc
Tutor

Re: No Internet on LAN Ports WiFi fully connectivity

Browse shows "resolving host" in lower left and then gives message

 

DNS_PROBE_FINISHED_BAD_CONFIG

 

Turn wifi back on I still get "resolving host" quite a bit but I connect. Also lots of blinking on LAN LED

Message 5 of 6
divonc
Tutor

Re: No Internet on LAN Ports WiFi fully connectivity

Finally figurred it out - pretty simply. There was a non-valid hard-coded DNS address on the IPv4 Ehternet adapter. Everything cleared up when I removed it.

Message 6 of 6
Top Contributors
Discussion stats
  • 5 replies
  • 121179 views
  • 2 kudos
  • 2 in conversation
Announcements

Orbi WiFi 7