Troubleshooting LAN Connectivity
Last Updated: Mon, 21 Nov 2016 > Related Articles
Sometimes the broadband router is able to obtain a public IP address, but none of the computers can connect. When this happens, you have a LAN connectivity issue.
Follow these steps to troubleshoot a LAN connectivity issue.
In the order listed below, power cycle your network.
Important: The order in which this is done is relevant and crucial to success.
- Turn everything off. Start with the computer(s), then the router, then the cable modem.
- Leave everything off for 30 seconds.
- Turn everything on. Start with the cable modem and allow the modem to get in sync.
- Turn on the router.
- Turn on the primary computer and finally turn on the remaining computer(s).
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.
Important: If a 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.
On the wireless router, change channels.
Attempt a hard reset.
If there is still no connectivity, contact the router manufacturer.