Linköpings universitet : Student - Alumni - Näringsliv/samhälle - Internt - Sök
[På svenska]    Monday, june 21
Change password
Documentation
E-mail
FAQ
Find a student
Find an e-maillist
Find an employee
Glossary
Helpdesk
iStudent
Knutpunkten
Network
Filesharing
My settings
Security
Settings
Support
Timeserver
Regulation

The inofficial SUBnet support page!

(Written in English to avoid Swedish grammar errors, and also to help exchange students.)

This page should help people who have problems with SUBnet, have some experience with computers and who are not able to reach SUBnet support or would like to try to fix problems on their own.

Of course we are not going to yell at you if you haven't tried all these tips! You are always welcome to call us, even if you haven't had the time for experimenting with the problem by yourself. And remember SUBnet support is provided free of charge!

Disclaimer: Information on this page is given without any guarantee for success - it isn't even guaranteed that your computers works after trying out one of these tips. So use them at your own risk (although there are no extreme risks for damage) !

Ok, SUBnet doesn't work. What should I check first?

Have a look at the connection cable. It should be connected to the outlet marked with DATA, (not the one marked COM, this is where the Tele2-telephone belongs!). Is it connected like it should be, not damaged in any way, the plugs firmly in their outlets?

Then have a look at the networking card: Does it have a LED and does it blink? If it does, it most certainly has a working network connection, which does not imply that the network is actually running (see below).

If it has two LEDs, and they are lit, but not blinking, you could have one of the problems I described on the bottom of the page.

winipcfg? What's that?

It is a little program for examining your current internet preferences all the way down to your network card address. Simply run it with the command "Run...." in the Start menu.

winipcfg (sw.) just responds with "Det uppstod ett allvarligt fel i att läsa IP-konfigurationen"? (Serious error in the IP-configuration)

That's the classic problem! Windows has "forgotten" to install some of the TCP/IP-routines needed. You can solve this problem by taking away your network cards' driver (even if it seems to be working), and adding the same one again - this routine should be repeated until Windows starts installing the TCP/IP programs and DLLs from CD a second time (usually happens after the second or third attempt)

NOTE: Sometimes it is better to overwrite newer versions of DLLs with the ones from the CD

The network card LED is not blinking, what could be wrong?

Have a look in the system control panel, and there under System. Check if your network card is marked with an exclamation mark. If you have one there, you are out on your own. I can only give you some tips:

  • Cards with 00-00-00-00-00 as MAC-address (like seen in winipcfg) are defect - you have probably bought them at MfITCom in Ryd Centrum. Bring them back and exchange them using your one-year-warranty.
  • Certain Realtek-cards have trouble with assigning the IRQ to the card in the right PCI-slot. Try to move the card to other slots. Install a new driver. If all that does not work, get a new card, that's the best solution (or you let SUBNet-support try to fix it).
  • Try to use the "Refresh" button in the Windows->Device listing (right on "My computer", then "Properties"). It updates the Windows list.
  • See if you have some unsupported devices in your Device listing (see above). You can try to take them away or deactivate them, that helps sometimes.
  • If you find no solution to your problems, you can always go and buy an NE2000-compatible card. It is a little bit slower than other cards, but it will most certainly work from the beginning. You can also buy a card from "Linus & Linnea" in Kårallen, they are providing networking cards that are approved by SUBNet-support.

Which network protocols are needed for a working SUBNet connection?

This question has already been answered in the attachment you got with your IP-number change info; y will only need TCP/IP!

  • NetBEUI is not needed, instead you should enter WINS = 130.236.230.9 in the WINS-tab under the TCP/IP-configuration panel.
  • If there is a Dialup-Adapter (Modem) driver left in the network setup, and you don't need it in the near future, please remove it - this will save you from a lot of potential trouble (like Windows choosing the modem TCP/IP instead of Ethernet TCP/IP), and you can reinstall it any time you like anyways.
  • IPX is not needed anymore, as it just helped older games to run across the local network - with the new division of the net (which happened 990616). You can't play IPX-based games over the subdivisions of the net anyways - just remove IPX, that saves the others from unnecessary traffic

FTP and ping is running without problems, but Internet Explorer/Netscape Navigator won't load pages. Why that?

You have probably set an Internet proxy, which SUBNet users don't need and don't have. Deactivate it in the preferences of your web browser.

I can't browse the local network, even though I can access the internet.

This is a very difficult problem we weren't able to solve. Have you entered a WINS server (130.236.230.9, needed in both fields in old Win95-versions)? Otherwise, contact SUBNet-support - maybe we can help you.

The local Windows network was never designed to handle that many computers in one workgroup - that's why Peter Åstrand has created a virtual workgroup called WINS - you MUST NOT JOIN the workgroup, do the following instead:

  • Enter the WINS server under 130.236.230.9 under the WINS section of the TCP/IP configuration panel.
  • Now use the function "Search for computer..." to locate the computer ISIS.
  • Open the computer ISIS (you can also do that by entering "\\ISIS" in the Windows explorer location bar).
  • When you have found the computer, go into the subdirectories until you find a workgroup link.
  • Drag this link to your desktop. You can now use this link to browse the local network (instead of double-clicking on the network icon).

How do I run the MS-DOS setup program of my network card ?

If you want to be really sure that your card is working like it should (and maybe adjust some settings), you can run the original setup program that was provided with your networking card. I hope you have one, not everyone gets it with his/her computer nowadays.

Restart your computer in MS-DOS mode (an MS-DOS window is _not_ enough, as you still have the network drivers running in the background !). Now go to a:, and try to find your setup program, it is usually called SETUP.EXE. Run it, and you will get a menu with some configuration and diagnostic options.

Some tips from my SUBNet support experience:

  • If your network is really slow, try to see if you have Full Duplex activated. Run your MS-DOS setup program (see above on how to do that), and switch your card to Half Duplex (the newer networking cards have an option for that in their network driver panels).
  • If the card has two LEDs which are lit, with no sign of blinking, you could have forced the card to just having the BNC output activated (provided you have an ISA card and a BNC output, it's a round one, looks like cable TV connectors). Run your setup program, and switch to Autodetect or TP cable.
  • Plug'n'Play doesn't work very well with ISA cards, and therefore it is sometimes better to switch the card setup to "Jumperless Mode". This means that you manually adjust IRQ and Port, and adjust the same values in Windows. If you do that, ensure that your computer BIOS (press and hold 'DEL' whilst you start up your computer to enter the BIOS configuration) doesn't use the chosen IRQ for PnP assignments (go to "PnP/PCI configuration", switch to "Manual" and change the chosen IRQ number from "ISA PnP/PCI" to "Legacy ISA").

Hmmm, do you maybe know some hardware vendor homepages ?

I do; here is how to find out by yourself: Try to find some company name on your card, or the packaging you got with your card.

Then randomize some names: Let's say your company is called "VIA". Then try www.via.com, www.via.com.tw or www.via.net.

If all that doesn't help, try to search on one of the searchengines like Google, using keywords like: VIA network products driver solutions

Here are some of the links I have found already:

If you find some new links, I would be glad to add them to my list.


Webmaster: Webmaster * Infomaster: Gernot Ziegler
Last updated: 2003-10-09