Ask Computer Networking Questions and Get Answers ASAP
Can you tell us if the computer gets its IP from the router or did you give the IP address to the machine?
On your machine that you are using to talk to me can you click start then run and type CMD into the Run box and hit Ok to open a DOS window.
When the window opens can you then type ipconfig /all and hit enter then tell me what your machine lists for IP Address, Subnet Mask, Default Gateway and DNS
On the desktop computer that is giving me trouble,
IP address 192.168.1.101
Subnet mask 255.255.255.0
Default Gateway 192.168.1.1
On the laptop computer that I am using to talk to you now,
IP address 192.168.1.100
Default gateway 192.168.1.1
DHCP server 192.168.1.1
DNS servers 220.127.116.11 and 18.104.22.168
At the moment, the computers can ping each other.
Is the problem machine currently online?
Can you go to the problem machine and click start then control panel and open Network connections.
When it opens can you double click the Local Area Connection and then select TCP/IP and click Properties.
Once the properties window opens can you choose specify IP address and enter the following:-
IP address 192.168.1.175
Next can you check the specify DNS option and enter the following:-
DNS 1 22.214.171.124
DNS 2 126.96.36.199
Once that is all entered can you then save the change and restart that machine and let me know if it will get online when it restarts
Basically what you just did is set a Static IP address onto the machine so that it will never change unless you change it yourself.
Just run it for a couple of days and make sure it is all good and let me know back in this thread if you have any issues
Hi, claws224 - Unfortunately the same thing happened again a couple of days ago, so I had to reboot and then OK. Today the computer was unable to access the Internet, so I rebooted again and now OK. The IP address, DNS etc is still as I set it before. You said to respond on this thread if there were still problems. Is there some information I should check?
When it happened did you get an error on your machine?
Were you using any other computers or network devices before this happened?
Yes, I was using my laptop, which also has an Ethernet cable to the router. Also I took it on a trip and re-connected it on my return. I cant remember if this has always been the case just before the problem arose. My wife's laptop is also in use. It is a Mac (the other two are IBM type), but the problem was the same when she also had a Dell laptop.
It sounds like an IP conflict which could happen if something elese is trying to use the same ip as the one we assigned.
If you could open the TCP/IP window and change your static IP to 192.168.1.75 then save it and just keep an eye on it for a week or so and let me know if you have any more trouble out of it
Just let me know back here if you have any issues with it
It's happened again... Seems like whenever I unhitch my laptop (Dell) from the ethernet cable, and take it on a trip, and return, the desktop loses its Internet connection. The laptop is currently using IP address .100 and my wife's laptop is using .102, both automatically obtained, while the desktop is now set manually to use .75, so it doesnt seem that they are trying to use the same IP address?
Do you have any other wireles or wired devices, Such as iPhones or a Tivo box?
If you shut everything downthen power up the desktop first then power up the others does everything work correctly?
Can you run the tool on this Microsoft site and let me know what happens http://support.microsoft.com/kb/299357
Keep me posted.