Troubleshooting

Troubleshooting Network Connections

Wired.

First the data (Ethernet) jack in your room should be grey, if it’s white or just matches the color of the cover plate, it’s probably a phone port for a land line. Also you need a real Ethernet cable, unfortunately, a phone cord will fit into an Ethernet jack and vice versa, but if it’s not an Ethernet cable into an Ethernet jack, you won’t be able to connect on it. It’s a good idea to have a second Ethernet cable around, cables go bad eventually and even on rare occasions a new cable will not make a good connection. Also, you can try plugging the same computer/cable into another jack (with the wireless turned off.) If it connects fine in jack 1a-c27, but not 1a-c28, then 1a-c28 is most likely broken. (That’s the general format for the jack labels.) If you’ve done this troubleshooting, make a note of the jack label and call ResNet, 402-472-3535 or email the information to resnet@unl.edu. There is only a limited number of Ethernet Jacks available, we suggest you maximize your use of them for desktop computers, gameboxes and media streaming devices. The signal will generally be faster and more reliable than the wireless.

Wireless.

First, make sure you are connecting on UNL-AIR. If you’ve been through the procedure to access UNL-AIR-E, that’s okay too. UNL-WIRELESS-REGISTRATION only goes one place and your computer may keep trying to use that SSID or wireless network. Also make sure you have the correct MAC address registered. If you typed in a MAC address or physical address it’s common to get the address for the Local Area Connection which is the Ethernet Wired connection or the address for the Bluetooth connection on some devices. Neither of those will do you any good.

If your wireless connection works well most of the time, but not always, it may be related to the volume of devices connecting at that time. Peak wireless use in the Residence Halls is usually between 6 PM and 1 AM. You may want to consider using an Ethernet wired connection during these times, especially for anything important like an online test or homework. If your wireless connection works well everywhere except in your room, it may help to make sure you’ve got the latest driver for your wireless card. On Windows computers, new drivers may be available in the optional Windows updates or your PC may have a program that can keep your drivers up to date or at least let you know when there are updates available from the manufacturer. We can help check your drivers at the ResNet Office or at the Computer Help Center. Also, ask your roommate if they are having the same issue.

If you’ve determined that it’s just in your room, call or email ResNet at 402-472-3535, resnet@unl.edu , we’ll need the MAC address you have registered for wireless and your room number. You can also come to our office in Sandoz Room 134 right next to the Welcome Center.



Some troubleshooting for older computers below.
Winsock 2 fix
(for Windows XP)

Releasing and Renewing Your IP Address

My Internet connection worked before, but it doesn't anymore!

You're in luck! Most of the time, this is a simple problem to fix.

For Windows 7 and Vista:

  1. Click the Start button, and in the Start Search field type cmd. When the cmd.exe icon appears, right click it and choose "Run as Administrator".
  2. You should see a window with a black background and a blinking cursor.
  3. Type ipconfig /release and press Enter.
  4. After you are able to type again, type ipconfig /renew and press Enter.
  5. Once you get a blinking cursor again (it could take between 1 and 15 seconds), you can close the window. Then, open Internet Explorer.
  6. If you still do not have Internet access, try restarting your computer and opening Internet Explorer again.

For Windows XP and 2000:

  1. Click Start, and then Run. Type cmd and click OK.
  2. You should see a window with a black background and a blinking cursor.
  3. Type ipconfig /release and press Enter.
  4. After you are able to type again, type ipconfig /renew and press Enter.
  5. Once you get a blinking cursor again (it could take between 1 and 15 seconds), you can close the window. Then, open Internet Explorer.
  6. If you still do not have Internet access, try restarting your computer and opening Internet Explorer again.

If you still have problems...

If none of the above suggestions helped, give ResNet a call at 402-472-3535. We may have a few more suggestions to try. If it still doesn't work, you might need to bring in your computer for expert advice.