unable to ping anything

Question

Hi,   I have recently set up a wireless network, ad-hoc, and that is working fine but I am unable to see anything apart from itself from 1 of the comp after sufing for hours and hours trying to find a fix for my problem i trace it back to being unable to ping including the loopback address which i find is rather strange.   I hope one of you smarties out there could posibly help me. please.

Jjpeters18 · Answer

Hello,

More details would be great. Are you using Cable Modem/DSL? Can you connect to the internet but not see the rest of your internal network? (I ask because you were surfing for answers). Do you have a Wireless router, or a router in general? Have you tried giving yourself a static address that follows suite of the rest of your LAN? If so did it change anything? When you said you were trying to ping, was that by name or by ip address directly? I am assuming IP address but I just want to get everything out in the open.

If you do have a wireless router, can you log into via web interface? If so have you checked to make sure that it uses the same addressing scheme as the rest of your network, including but not limited to both putting you on the same subnet?

I am sorry for the string of questions, I hope one of them lets you answer your own question, otherwise I will try to give you a better answer from them.

-Josh

Jjpeters18 · Answer

It sounds like your other pc is taking the address, in order to get both pcs on the internet at the same time you need a router. Just to confirm my thoughts please try this, unplug the network cable from the other pc. Plug your modem directly into the wireless box, reboot the pc you wish to connect with wireless. Once it comes back up connect to the wireless and see if you can go out to the internet. If you can then your modem does not have built in routing functions and you will need a router between the modem and your wireless box/switch/hub/whatever.

Hope that helps.

GravyDave · Answer

Thanx for the reply Josh.   A1:I am using a adsl internet connection on the computer that is working.   A2:On the PC that Im having the problems with I can use it to get on the net but only if I plug the modem directly in to it, I normally just use the good PC to surf.   A3:No routers just to wireless adaptors, a D-Link G630, and a DSE 802.11g WLAN (USB) device,   A4:I have had a little experince setting up wireless networks and I have always used static IP's,   A5:I have tried to ping with both, name's and IP's.   Thanx again Josh, I hope I have answered your questions.   Thanx Dave

GravyDave · Answer

Hi thanx for your reply

first of all im using a usb adaptor and a notebook adaptor, Neither of them have rj45 plugs and i know that the modem doesnt have any routing capabilities cos it's just a straight adsl modem (DSL-302g), It came free with the internet connection.

My main problem at the moment is that I can't ping the loopback address on my laptop.

cheers for your post

Dave

Jjpeters18 · Answer

Ok I am sorry, when you say Notebook adapter I am assuming the notebook is using a PCMCIA card and the desktop is using the usb? You said before that the wireless was working, by that did you mean the notebook recognizes it as a device or that the wireless on the modem is working?

When you do an ipconfig /all does it show anything or does it say media disconnected?

Also back to some of the obvious, check device manager to make sure there are no errors. Fn F2 toggle your wireless off then back on might wake it up.

....Let me know what happens.

GravyDave · Answer

Hi thanxs for being so prompt.

The network itself is fine they both reconise the adaptors and there are no errors, when i ping the loopback address I get this error:-

Application popup: 16 bit MS-DOS Subsystem : Command Prompt - ping 127.0.0.1

The NTVDM CPU has encountered an illegal instruction.

CS:0f33 IP:4701 OP:0f 00 01 33 0f Choose 'Close' to terminate the application.

and if i click close it just goes back to the command promt but if i click on ignore it repeats the msg three more times and then goes back to the command prompt

i have used the windows trouble shooting network diagnostics utility, it does a IP adress check and it comes up fine and it tells me that it has all passed.

hope this helps

Dave

Jjpeters18 · Answer

This actually sounds more like a windows error then a networking error then. Interesting read on the subject:

http://support.microsoft.com/kb/314106

Try that and let me know if helps any, another option is to google,

"ping" The NTVDM CPU has encountered an illegal instruction.

It comes up with some helpful articles.

GravyDave · Answer

Hi ppl   I'm a bit embarrased here but first I'd just to say thanks for all your help.   I managed to find the problem I had disabled the lan card to stop it from comming up with that annoying pop up that tells me that the network cable is unpluged which also turned off the nic card. Doh.   thanks heaps.   Dave

Jjpeters18 · Answer

:) Glad to hear its working.

GravyDave · Answer

Cheers for your help.

Only two problems left now ICS and not being able to use 11g, I seem to be stuck on 11b, I should hopfully be able to nut these out myself but if you have any ideas please don't hesitate to post them I might start a new thread but ill keep an eye on this one as well.

Thanx again for your help.

Dave

Jjpeters18 · Answer

Check Device manager, networking adapter, your wireless card, properties, advanced tab, rate and make sure its set to best or 54. Also double check that your wireless hub isn't set to b. -Josh

GravyDave · Answer

I went to where you said but there is no rate setting there on either comp there's only: Property - Value 802.11b preamble - Long and Short Map Registers - 256 Network Address - not present Power save mode - CAM (Constanly awake Radio on/off - On Transmit Power - 100%   Thanxs for the reply (and so quickly too).   Dave

Jjpeters18 · Answer

Are you sure you have a card that supports 11g? If so are you sure that the wireless hub supports/is set to 11g? On the good note, unless you are going to add more pcs to it or plan on moving a lot of data across your network, 1 pc at 10 mbs vs 1 at 54 mbs will show almost no difference for internet activity since you will bottleneck much lower at your internet connection anyways.

GravyDave · Answer

I rang Dell and they said the ad-hoc networks only run 11b and that to get 54mbs I would need an access point.

so thats the end of that, but I'm still having a bit of trouble getting ICS up an running but I shall keep tweaking the settings and hoping it works.

cheers for all the advice

Dave

Networking, Internet, & Bluetooth

unable to ping anything

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