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Network Connection Troubleshooting Steps -- WiFi and Ethernet

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Courtney Ryan
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Overview

This article is provide you the steps to troubleshoot network connection for WiFi and Ethernet port issues.

Procedure

Steps for Ethernet (hard wire network connection):

  • There is one active port per student. In a double there is usually Two duplex jacks. They are typically labeled “A, B & C, D” or “1,2 & 3,4”. Normally A is reserved for a telephone (rarely used). B&D are network and C is a spare. 

  • When you plug in your device, please wait at least one minute to give your device time to connect.

  • You should plug your device directly into the wall port and make sure it is setup to use DHCP and you should remove any DNS servers that are setup so your DNS will will use one of the RPI's DNS servers.

    • Mac
      • First, Navigate to Applications, in Utilities select Terminal.
      • To Flush DNS, type in the following command and hit enter.
        • For Mac OS X Yosemite and later, type: sudo killall -HUP mDNSResponder
        • For Mac OS X Yosemite v10.10 -> v10.10.3, type sudo discoveryutil mdnsflushcache
        • For Mac OS X Mavericks, Mountain Lion, & Lion, type: sudo killall -HUP mDNSResponder
        • For Mac OS X Snow Leopard, type: sudo dscacheutil -flushcache
      • Next, choose Apple menu, select System Preferences, then click Network.
      • In the list at the left, select the network service that needs a renewed IP address.
      • Click Advanced, click TCP/IP, then click Renew DHCP Lease.
    • Windows
      • In the Windows search bar, type in Run, and hit <Enter>.
      • in the Run dialog box type cmd and click OK.
      • At the command prompt type in ipconfig /flushdns, and then press <Enter>.
      • Next, in the command prompt type in ipconfig /release, and then press <Enter>.
      • Next, in the command prompt type in ipconfig /renew, and then press <Enter>.

  • When you connect your device(s) via Ethernet, do the connectivity lights activate at all? And if so, what color lights, and are they steady or blinking lights?

  • Have you tested the connections with multiple devices, or only one?

Additional Steps for Ethernet and WiFi:

Updating your Network Drivers in Windows 10

How to update network adapter driver using Device Manager
  1. Open Start.
  2. Search for Device Manager and click the top result to open the app.
  3. Expand the Network adapters branch.
  4. Right-click the adapter with the problem and select the Update driver option. ...
  5. Click the Search automatically for update driver software option.
  6. You may want to restart your computer

Forgetting the WPA2 network (This will allow the RCS username and password login prompt to appear)

Windows

  1. Click the Network icon on the lower right corner of your screen.
  2. Click Network settings.
  3. Click Manage Wi-Fi settings.
  4. Under Manage known networks, click the network you want to delete.
  5. Click Forget. The wireless network profile is deleted.
  6. Selected wpa2 wireless connection in the lower right corner of your windows 10 taskbar and choose wpa2 and connect.  A login screen should appear to type your RCS username and password. 

Mac

  1. Open System Preferences.
  2. Click Network, then Advanced…
  3. Select a network from the list and click the “-” icon just below the list to forget/remove it.

Removing Password Credentials

Windows

  1. Click on the WiFi networks icon located on the right side of the taskbar
  2. Click "Networks settings"
  3. Click Manage Wi-Fi settings
  4. Choose WPA2 and click on "Forget"
  5. Click the WiFi networks icon again and then choose WPA2 and type in your RCS username and password.
  6. Click Connect.

Mac

  1. Click the Spotlight icon in the upper right of the screen.
  2. Search for Keychain or Keychain Access.
  3. Select Keychain Access from the list of results.
  4. Select All items from the left navigation bar.
  5. Scroll down to the desired entry. ...
  6. Right click the entry.
  7. Select Delete "WPA2"

Manage Wireless Adapter Power Settings

Windows

1. Click on the link for more info, Wireless Adapter: Power Management Settings

When you are having trouble connecting again, please go through the steps on the attached README_NetworkTroubleshootingSteps.txt file.  After reading this file 

Open hddig.zip file (located at the bottom of this article) will will open in file explorer and show three files:

  • readme.txt (shows the same information as in the README_NetworkTroubleshootingSteps.txt)
  • helpdesk.txt (shows a SAMPLE OF the IPConfig file that is the diagnostic file that Help Desk needs to determine the WiFi or Ethernet connection) The next step will show you how to run on your own device
  • Hddiag.exe - Double-click this file and choose "Run" if ask to have access to your device, say "Yes" and the Troubleshooting Options windows appears.

mceclip1.png

[Help Desk Diagnostic Utility - Troubleshooting Options window]

  1. Click each area in the first column, i.e. click "Flush DNS Cache", then click "Reset DNS Servers", etc.
  2. Click each area in the second column, i.e. click "Disable NetBIOS over TCP/IP" and then click "Enable DHCP"
  3. Click from the third column "Generate Text Report" and this file will be placed on your desktop named "helpdesk.txt"
  4. Attach this report (which is an IPConfig file) to your request. (This report will be read by the Help Desk and our Network Technicians) The results will help our network team isolate the network issue. You can run it when it's working and run it again when you are experiencing the issue. This can be done on both WiFi and Ethernet.
  5. After we read the results we will recommend the next step. 

Feel free to forward this diagnostic tool to anyone experiencing the same issue. 

 

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