can get IP, but no Internet

[drochili]

Can someone help me on this :


I have a LinkSys router setup at home. It already has 3 computers connected to it, and everything's fine (internet, local network etc).
A few days ago, I tried adding another pc, and everything seems fine except, I cannot get internet connection ( I can get IP everytime I release and renew, and I can also see the other computers in network neighbourhood). I looked under the router settings tho, and the ip I received on this new computer doesn't show under DHCP Clients Table. I've tried everything, refresh, shut down everything and start them one by one, modem, router, computer.. but still cannot get Internet connection on this one new computer.
ps: network settings and IE settings are exactly the same as another win98 comp that works.

Can somebody help me .. this is pretty annoying..

 

[ktwebb]

Sounds like a dns issue. Ping the gateway just to make sure you have IP connectivity. Not sure if your router allows ICMP requests through and back but if it does you can ping www.yahoo.com on one of your working machines. Get the IP of the site and then input that into the URL space of a browser window on the machine that is having problems. If it works then its a DNS issue. Or just make sure you have the proper DNS info based on a ipconfig /all, or WINIPCFG if your running 9X/ME, of the working machines, then duplicate that on your non-working machine.

 

[drochili]

Does it matter that I can't even access http://192.168.1.1 the router admin page from the new machine ?

Originally posted by: ktwebb
Sounds like a dns issue. Ping the gateway just to make sure you have IP connectivity. Not sure if your router allows ICMP requests through and back but if it does you can ping www.yahoo.com on one of your working machines. Get the IP of the site and then input that into the URL space of a browser window on the machine that is having problems. If it works then its a DNS issue. Or just make sure you have the proper DNS info based on a ipconfig /all, or WINIPCFG if your running 9X/ME, of the working machines, then duplicate that on your non-working machine.

 

[ktwebb]

That certainly sounds like a symptom of a connectivity problem. What's the IP of the machine that is having the problem.

 

[Goosemaster]

does the ip start with "169.xxxx

 

[drochili]

No... it's 192.168.1.102

Originally posted by: Goosemaster
does the ip start with "169.xxxx

 

[ktwebb]

C:\ping 192.168.1.1

What are your results?

Assuming that is indeed your gateway/router/DHCP server and so on, you should be able to ping it successfully.

If you get "Destination Host Unreachable" your on a different network ID. That would not happen since your a DHCP client and say the you have is not 169.254.X.X

More likely you would get "Request Timed Out" if it is not successful.

If it is not successfull start troubleshooting as a layer one problem. Or I would anyway. Bad NIC, bad patch cable, bad port on the router/switch or whatever. You could have a corrupt TCP/IP stack as well. What OS are you using on the problem machine?

 

[drochili]

I've tried that and got Ping Reply 4 times...
os : win98
ps : in network neighbourhood, all the other computers are visible and I can access them.. so I don't think it's the NIC or cabling..

Originally posted by: ktwebb
C:\ping 192.168.1.1

What are your results?

Assuming that is indeed your gateway/router/DHCP server and so on, you should be able to ping it successfully.

If you get "Destination Host Unreachable" your on a different network ID. That would not happen since your a DHCP client and say the you have is not 169.254.X.X

More likely you would get "Request Timed Out" if it is not successful.

If it is not successfull start troubleshooting as a layer one problem. Or I would anyway. Bad NIC, bad patch cable, bad port on the router/switch or whatever. You could have a corrupt TCP/IP stack as well. What OS are you using on the problem machine?

 

[mboy]

go to that machine, open IE, go to tools
IE optins
connection
click LAN
cMake sure you have auto detect proxy settings
Close IE, reopen and then see what happens.

 

[drochili]

I've tried that.. nothing... gives me the same error page cannot be displayed or something

Originally posted by: mboy
go to that machine, open IE, go to tools
IE optins
connection
click LAN
cMake sure you have auto detect proxy settings
Close IE, reopen and then see what happens.

 

[ktwebb]

Find out if it is a DNS issue. Instead of typing in www.anandtech.com, use the IP in the address bar, 216.151.100.123

If that works then it's dns. If it doesnt, then my guess would be an IE problem. Thats assuming your only using IP for your LAN connectivity. If you can browse shares using your DHCP assigned IP then your stack and layer1 devices are working.

If it is DNS you may just have to manually assign the dns IP's. That wouldn't explain why you can't get to your admin screens though, which is another indicator something is screwy in IE. I'd burn a copy of Opera on to a CD from one of your other machines and install that. If it works, then its IE.

 

[drochili]

here's what I found out on the weekend :
1. I can ping any ip address fine, ie 66.218.71.81 gets replies, whereas www.yahoo.com will just give me Unknown host
2. If I type 66.218.71.81 in IE, it will not open the page, just says IE cannot open search page
3. I installed Netscape from scratch and the same thing happens with it , neither the ip nor the address will work, Cannot open page
4. I've tried re-installing Win98 and still nothing
5. I've tried manually assigning IP (based on the documentation in Linksys router 192.168.1.99, tried .2, tried so many numbers I forgot) , dns server etc... nothing happens

argh... driving me crazy... anybody have any other ideas ?

Originally posted by: ktwebb
Find out if it is a DNS issue. Instead of typing in www.anandtech.com, use the IP in the address bar, 216.151.100.123

If that works then it's dns. If it doesnt, then my guess would be an IE problem. Thats assuming your only using IP for your LAN connectivity. If you can browse shares using your DHCP assigned IP then your stack and layer1 devices are working.

If it is DNS you may just have to manually assign the dns IP's. That wouldn't explain why you can't get to your admin screens though, which is another indicator something is screwy in IE. I'd burn a copy of Opera on to a CD from one of your other machines and install that. If it works, then its IE.

 

[LANMAN]

Double check your gateway IP address. I know you said your using DHCP, but if you can see the other machines but you can't get out, to me it seems the only logical explaination. Can you ping the gateway?

If you can, then can you ping the WAN side of the router? (External IP of your router)

--LANMAN

 

[drochili]

yes, I can ping the gateway, I can even ping outside sites like yahoo (but only the IP address not www.yahoo.com)..

Originally posted by: LANMAN
Double check your gateway IP address. I know you said your using DHCP, but if you can see the other machines but you can't get out, to me it seems the only logical explaination. Can you ping the gateway?

If you can, then can you ping the WAN side of the router? (External IP of your router)

--LANMAN

 

[piasabird]

The IP for the Intenet is suppose to be on the Router (WAN SIDE). The IP for the internal computers should be on the Switch side of the router (LAN SIDE). A router uses 2 IP Addresses. One for WAN and one for LAN.

The LAN address is only used for local networking, and is by default set to DHCP which is a simple server that assigns LAN IP addresses as you log on. You should not need to use DNS, use DHCP.

On the WAN side you should set the IP Address the cable people gave you. You may also have to enter in the MAC Address of the NIC card that was initially used to set up your cable modem installation. Using winipcfg.exe. You write down the MAC address on the primary computer and enter that on the WAN Installation to Clone your MAC address. To the outside world, every time you log on your original MAC address from your NIC card will show up and it will appear that is the only computer on the WAN network side.

 

[drochili]

Ok, so what am I supposed to do now ? Remember that all the other 3 computers are working fine with the same router , they can access internet etc... I'm not having problems with the others, just this one new computer I'm trying to plug in...

ps I'm not sure if this has anything to do with it ... if I type arp -a from command line in a working computer. .. it returns the gateway... but if I do it from the non-working computer there's no ARP configured .. I tried adding a static entry (exactly the same as a working computer's entry) but it didn't work

so people, anymore ideas... I'm really stuck.. maybe I should just format the HD and start over again..

Originally posted by: piasabird
The IP for the Intenet is suppose to be on the Router (WAN SIDE). The IP for the internal computers should be on the Switch side of the router (LAN SIDE). A router uses 2 IP Addresses. One for WAN and one for LAN.

The LAN address is only used for local networking, and is by default set to DHCP which is a simple server that assigns LAN IP addresses as you log on. You should not need to use DNS, use DHCP.

On the WAN side you should set the IP Address the cable people gave you. You may also have to enter in the MAC Address of the NIC card that was initially used to set up your cable modem installation. Using winipcfg.exe. You write down the MAC address on the primary computer and enter that on the WAN Installation to Clone your MAC address. To the outside world, every time you log on your original MAC address from your NIC card will show up and it will appear that is the only computer on the WAN network side.

 

[ktwebb]

so people, anymore ideas... I'm really stuck.. maybe I should just format the HD and start over again..

From a previous post:

. I've tried manually assigning IP (based on the documentation in Linksys router 192.168.1.99, tried .2, tried so many numbers I forgot) , dns server etc... nothing happens

Manually assign the DNS data. It would not be a private address like the gateways IP. It would be a public IP. I have said this ad nauseum at this point but if you can ping an outside IP but not a FQDN then it is DNS. Goto one of your other machines, and not the linksys manual, and do an IPCONFIG /all if XP or use WINIPCFG if 98/ME and copy the two DNS IP's from one of those machines to your box that isn't working. Manually assign the IP and gateway if you want but that is not what I suggested you do. I'm done. Good luck.

 

[drochili]

I've tried that too ( ... oh well.. thanks for your help ktwebb...

ps : could it be a virus by any chance ?

Originally posted by: ktwebb

so people, anymore ideas... I'm really stuck.. maybe I should just format the HD and start over again..

From a previous post:

. I've tried manually assigning IP (based on the documentation in Linksys router 192.168.1.99, tried .2, tried so many numbers I forgot) , dns server etc... nothing happens

Manually assign the DNS data. It would not be a private address like the gateways IP. It would be a public IP. I have said this ad nauseum at this point but if you can ping an outside IP but not a FQDN then it is DNS. Goto one of your other machines, and not the linksys manual, and do an IPCONFIG /all if XP or use WINIPCFG if 98/ME and copy the two DNS IP's from one of those machines to your box that isn't working. Manually assign the IP and gateway if you want but that is not what I suggested you do. I'm done. Good luck.

 

[DougK62]

Try plugging the non-working computer into one of the ports that a "working fine" computer is using, or vice versa.

 

[drochili]

done that too

I tried updgrading the router's firmware last nite.. also replaced wsock32.dll with one from a working pc...
no luck

Originally posted by: DougK62
Try plugging the non-working computer into one of the ports that a "working fine" computer is using, or vice versa.

 

[spidey07]

Sounds like the IP stack is fubarred. Try searching MS knowledge base for "repair TCP stack".

 

[drochili]

thanks, I'll try that...

Originally posted by: spidey07
Sounds like the IP stack is fubarred. Try searching MS knowledge base for "repair TCP stack".

 

[spidey07]

I've seen in a few instances where a IP stack is just off slightly, like a single .dll is a different version (there are like 12 for IP). Everything works great except DNS name resolution.

 

[drochili]

Everyone, thanks for your help. I did some research and turns out there were some registry keys that I had to modify / get rid off. Has to do with Winsock2 ... anyways.. everything's working fine now..

Again.. thanks for all your help

cheers

Darrick

Originally posted by: spidey07
I've seen in a few instances where a IP stack is just off slightly, like a single .dll is a different version (there are like 12 for IP). Everything works great except DNS name resolution.

 

[Mooligan]

drochili, I don't suppose you could provide links or more info on that fix. I was trying to help someone through what sounds to be the EXACT same problem last week and eventually he decided to reformat. But it sounds like exact same symptoms, could browse his local network fine, he could ping anything but had no internet access. I assumed as many in this thread did that he had DNS issues and tried several of the same things that were listed in this thread.

Anyways if you have the information regarding these registry keys or the fix in general that would be great, for future reference for this problem, because other than the reformat, I was stumped on a fix