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mdthomp38
Fanfold Paper
Posts: 5
Registered: ‎04-28-2016
Location: US
Views: 193
Message 1 of 6

WiFi pulls IP but wont connect to internet

Guys, we are seeing on multiple Lenovo models like the T440 and X131E's that when they are connected to Wireless they get a DHCP address and can get to intranet sites for our domain but cannot get to anything on the internet. they can ping and resolve to internet sites like google.com.

 

They have this issue on multiple SSID's that they connect to and sometimes it will fail for hours then all of the sudden start working. We have updated the drivers, double checked our wireless LAN controllers, DHCP and we are jsut stumped.

 

Any help or direction on this would be great.

 

Thanks,

Matt Thompson

 

 

Moderator comment: Email address(es) removed to defeat spambots.

tripplec
Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 186
Message 2 of 6

Re: WiFi pulls IP but wont connect to internet

Sound like dns issue. Check which DNS is being assigned. Also if correct and valid. Typically if you can ping beyond your own network its then a DNS issue. You can override the default with something like OpenDNS IP's rather than the ISP or your own.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

mdthomp38
Fanfold Paper
Posts: 5
Registered: ‎04-28-2016
Location: US
Views: 156
Message 3 of 6

Re: WiFi pulls IP but wont connect to internet

Tripplec, thank you. I should say that we can ping google.com and it resolves an IP but no response which could be by design. We have two DNS servers that are applied to every computer in the district via the image they get. We have been seeing our DNS servers hang to the point of having to hard reset the VM to gain access to it. The other thing is that it is not happening to all laptops.

tripplec
Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 152
Message 4 of 6

Re: WiFi pulls IP but wont connect to internet

Correct all websites don't respond to pings. However, its nice to know which does to test with.

C:\Users\Ron>ping www.rogers.com

Pinging e6313.e12.akamaiedge.net [184.84.184.147] with 32 bytes of data:
Reply from 184.84.184.147: bytes=32 time=48ms TTL=55
Reply from 184.84.184.147: bytes=32 time=48ms TTL=55
Reply from 184.84.184.147: bytes=32 time=49ms TTL=55
Reply from 184.84.184.147: bytes=32 time=53ms TTL=55

Ping statistics for 184.84.184.147:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 48ms, Maximum = 53ms, Average = 49ms

Rogers does for example above and Bell.ca doesn't.

Back to the the units not working. They may be hacked and IP is being redirected to a different DNS server or blocked by the firewall of the system. Don't know what operating system you are using. If its more than one browser look to redirection if you can ETC directory under Drivers for HOSTS file at usually "C:\Windows\System32\drivers\etc".

Also TRACERT the www.xxxx.com site to see where its going. Compare to a working system if you're not sure its right..

 

IPCONFIG /ALL should show the assigned DNS service its set for as you've configured.

T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

mdthomp38
Fanfold Paper
Posts: 5
Registered: ‎04-28-2016
Location: US
Views: 132
Message 5 of 6

Re: WiFi pulls IP but wont connect to internet

Thanks again Tripplec. We will look at those things when one of our techs brings in another problem laptop. 

tripplec
Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 124
Message 6 of 6

Re: WiFi pulls IP but wont connect to internet

I thought you were doing the diagnostics. Anyway there other fundement things which I presume have already been done before arriving at this point.

Good Luck with it.
T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

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