Data Support
Troubleshooting LAN Connectivity
Last Updated: Fri, 06 May 2011 > Related Articles
Summary
Sometimes the broadband router is able to obtain a public IP address, but none of the computers can connect. Follow these steps to troubleshoot LAN connectivity.
Solution
- Complete a Network Reset by power cycling your system. This simply involves powering everything down, and then turning everything back on.
Note: The order in which this is done is relevant and critical to success!- Turn everything off starting at the computers and moving towards the wall: computers (all) first, then the router and finally the cable modem.
- Leave everything off for a few seconds.
- Turn everything on. Start from the wall and move out. Power up the cable modem first and allow it to get in sync.
- Turn on the router.
- Turn on the primary PC and finally power up the remaining PCs.
- Verify the router is set up as a DHCP server.
- Verify that all the wireless router settings related to SSID, WEP and MAC level authentication are correct.
If a Home Network includes a Windows XP computer using a wireless connection, DO NOT disable the SSID Broadcast feature on the router. Disabling SSID can cause a loss of wireless connectivity to Windows XP. Verify the WEP and MAC address filtering security features ARE ENABLED. - Change channels on the wireless router.
- Attempt a hard reset.
- If there is still no connectivity, contact the router manufacturer.
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