Testing the IP configuration – how to share a broadband Internet connection

After you’ve set up your IP configuration and restarted your PC you can use the winipcfg utility to confirm that things are working as intended as follows. The following instructions and screenshots are for a Windows 98 environment. Use the wntipcfg utility can be used in a Windows XP or other NT environment.   From the Start menu, select Run, and enter winipcfg. You may need to select your Ethernet adapter from a drop down menu. The display gives you various information about your IP configuration. Click More Info for further details. Make a note of your IP address.   From the Start menu select Programs and DOS Prompt to open up a DOS window. Type ping followed by your IP address. Next, test the IP setup between your PC and ADSL modem/router by typing ping followed by your gateway IP address. If this doesn’t work, check that the modem/router is switched on and that the cable between it and your your PC LAN card is connected correctly. If it still doesn’t work it may indicate that you have a faulty modem/router. winipcfg/wntipcfg and ping, together with the tracert diagnostic utility, can all be used to help troubleshoot your broadband connection. If your IP address was dynamically allocated by a Dynamic Host Configuration Protocol (DHCP) server, you can use the former’s Release and Renew buttons to respectively release the IP address your NIC is currently using and obtain a new one. This can be worth trying if you suddenly lose your broadband Ethernet connection for any reason. The ping utility was inspired by the principle of echo-location and named...

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