weired internet connection problem

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March 29th, 2006, 03:53 PM
linux1880

weired internet connection problem

I was trying to get one of my old box (PIII with Windows XP) into the internet. I can ping 127.0.0.1, result shows good. The is no problem on the NIC. I also went to device manager and checked it, it says device is working properly.

I have another computer of the same configuration and system. It connects to the internet or intranet (as a client). But the one, above mentioned does not connect. I have then, formatted it and reinstall XP, still does not connect.

1. Device manager shows nothing problem on NIC
2. Loopback successfully return.
3. There is no problem from ISP.
4. Formatted and reinstalled OS.

Then where is the problem ?
March 29th, 2006, 04:17 PM
Nokia

Is this at home of on a corprate network? Is it recieving an IP address and all the rest of it?

Can you ping the default gateway/ internet sites?

Is it going through a router or straight on the the phone line/cable etc?

Are ypou getting any error messages when you try to access the internet or is it just not displaying the page?

Cheers!
March 29th, 2006, 04:17 PM
Cemetric

-Can you ping your gateway ??
-Is your network cable hooked up correctly ?
-Have you tried with another network cable (the one from the machine that's working ok) ?
-Did you check if you IP configuration is correct (subnetmask, gateway,DNS, etc) compare it with the pc that's working ?
-Can you ping this other pc that's working ?
-Do you have a personal firewall that might be blocking things?
-Do you use DHCP and does this pc receive an IP-address (no more free addresses to give out) ?
-can you ping a host on IP and on name (DNS resolution) ?
-Do you use a HUB or Switch ... port where the pc is hooked up can be malfunctioning..switch with the working pc to test .

- etc ...

Can you give us a bit more detail ...configuration of the network ..what works from the above list and what doesn't ...maybe the problem is somewhere else ..but this might set you on your way.

[edit]darn Nokia ... you've beat me to it ;) :D [/edit]

.C.
March 29th, 2006, 04:19 PM
morganlefay

Cable???

Are you using a router..?

Can you ping google???

Does your ISP use a mac address for connection??? because the mac address for the new machine...is different ...some cable companies do that here in Canada

MLF

edit>

guess we all posted at the same time :p
March 29th, 2006, 05:16 PM
Nokia

What a tag team we all make! Aint it funny how we all said the same stuff?!?!
March 29th, 2006, 05:24 PM
Cemetric

Quote:

What a tag team we all make! Aint it funny how we all said the same stuff?!?!

Tag ..you're it :D

Yeah ...seems we are doing this stuff for too long ... time for someone else to take the ball ...

Or is it ;)

.C.
March 29th, 2006, 05:29 PM
Nokia

*Nokia tags MLF*

LOL, Guess great minds think alike! All though Mrs Lefay's mind was Two whole minutes behind ours! :p - Too much wine and cheese! :D
March 29th, 2006, 05:43 PM
linux1880

Thanks for the reply guys. This is home network.

1st case: This is a part of my home network using win2k server, no router , no firewall but the hub is connecting other two computer as well (they work fine)

I cannot ping any websites. I checked the ipconfig/all , it gives the client IP as 0.0.0.0 (in automatic configuration), Then even before that I tried to ping server. It doesn't ping. I changed the cable, no luck and used the same cable in other computer, it worked.

Funnily, cable is good, client computer is fresh reinstalled. there is no fault in NIC , neither on server NIC.

Now there is no point of changing client IP cause it doesn't ping server anyways.

2nd case:
I am using NTL cable Broadband, and plug the client computer directly from modem, still there is no internet connection. This never happened to me before. Usually what happens with NTL Broadband is once you set up broadband modem , it give the internet connection straight away without having to install ISP software. Now i even installed ISP software, no luck.

I again ping yahoo.com , no luck. My brain is frying.
March 29th, 2006, 05:52 PM
Cemetric

Quote:

I cannot ping any websites. I checked the ipconfig/all , it gives the client IP as 0.0.0.0 (in automatic configuration)

You won't get reply from anything if your IP is 0.0.0.0 ... Did you give this PC a static IP-conifguration and then tried to ping ??

Is your DHCP client running ?

Try to give this "defective" PC an IP-address in the same range as the one that works ... see if that helps.

Does your W2K server hand out DHCP ...does it still have free addresses to give out ???

.C.
March 29th, 2006, 05:53 PM
Nokia

Ok, just to clarify this you have:

NTL set-top box ---> hub ------> three boxs.

as your set-up?

2 of the boxs work fine but the third does not, and the third is 2K server?

If you plug a box stright in to your set-top box you still get no connection?

Have you registered the MAC address with the NTL box?
March 29th, 2006, 05:54 PM
morganlefay

Try a different NIC....

MLF

edit> geez...i am losing track on whos 'it" :)
March 30th, 2006, 04:58 PM
linux1880

To Nokia,

You are right, excpet the 3rd computer is winXP not win2K server, with win2k server total computers will be 4.

No I haven't registered MAC address with NTL.
March 30th, 2006, 05:09 PM
morganlefay

May be a limit to how many computers\connections you can have with NTL

Get a router....use one IP address.....and have as many boxes that can fit in your house....

We have an ISP that tells its customers they can only have x number of computers...anything above that they charge extra.

May be the same with your ISP???

MLF
March 30th, 2006, 06:17 PM
Nokia

OK - IIRC NTL set-top boxes do not have a NAT capablity - you are just assigned one IP from them and that it is.

If you power all three boxes on together, do they all have active internet connections?

You are getting a invalid IP (0.0.0.0) as there is nothing to assign an IP to the host.
Untill you register the MAC address with the NTL box you will never get the box online.

You can buy a router that will connect to the set-top box - which will be able to assign the IP's you need to all your hosts but it has to be an NTL one (IIRC) or at the very least a cable one - (not ADSL) NTL retail theirs for around £70 if memory serves me right.

Another way around it is to use one box and 'share the internet connection' thereby connecting your other boxes to it.

Try just connecting the box that you are having trouble with to the set-top box - without the hub - register the MAC address with it and see if it gets a connection.

You wont have an internal IP address whilst using an NTL box - it will always be an external one - think they have part of the 81.x.x.x range so look for this.

If after registering the MAC addy and just going down to th eone host you still are not assigned an IP (and after checking it is set to auto recive an IP, your NIC works and the cable is good) you have to phone their tech support and explain the problem to them to get a new box.

Tell them stright off you have registered the MAC - power cycled the box and tried another computer but you are not getting an IP. When I phoned them it took me over an hour to get them to belive me (at 50p a minute!) eventually the relented and agreed to replace my box! They will still tell you to power cycle the set-top box an then your computer and then the box again - just to keep you on the 50p a min line!

But I am not 100% sure that it does not have a NAT capability, especially with you saying two boxes work fine (is this when they are both on at the same time?).
If it does you will be assigned an internal ip in the 192.168.x.x range providing the MAC is registered with it!