How to Maintain and Troubleshoot Network Connections

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Maintain and Troubleshoot Network Connections

Troubleshoot Network Connections

Procedure : Troubleshoot Connectivity Using Ping

To use ping to troubleshoot TCP/IP connectivity:

1.    Open a Command Prompt window.

2.    Enter ping 127.0.0.1. Pinging the IP address of 127.0.0.1 (also called the loopback address) generates a response from the IP protocol on your own computer. This verifies that TCP/IP is installed and working, even if the computer does not yet have a valid IP address. The loopback address is a standard address that is reserved by the TCP/IP protocol for testing. An equivalent command is ping localhost.

3.      Enter ping your IP address. (Replace your IP address with the IP address of the computer.) Pinging the computer’s own IP address enables you to verify that the IP address is unique and valid.

4.      Enter ping the address of another local host. (Replace the address of another local host with the address of another local host on your subnet.) This verifies that the computer is configured properly for connectivity to the local subnet.

5.      Enter ping default gateway address. (Replace default gateway address with the IP address of the default gateway.) By pinging the IP address of the default gateway (or another computer on the computer’s network segment if you do not have a default gateway), you verify that the network portion of the computer’s IP address and its subnet mask are correct, and that it can communicate with other hosts on its network segment.

6.      Enter ping remote IP address. (Replace remote IP address with the IP address of a host on a different network segment, in other words, a host with a different network address from the computer’s own.) Pinging a remote IP address verifies that the computer can communicate across the router (default gateway).

7.      Close the Command Prompt window.

Procedure: Troubleshoot Name Resolution Problems Using Ping

To use ping to troubleshoot TCP/IP name resolution:

1.      Open a Command Prompt window.

2.      Enter ping host name. (Replace host name with the name of a computer on the network or an Internet URL such as www.technews365.net.) It is possible to determine, from the results of a ping command, whether DNS is working, even if the remote computer does not respond to the ping.

3.      Close the Command Prompt window.

Procedure: Troubleshoot Name Resolution Problems Using NSLookup

To use nslookup to troubleshoot TCP/IP name resolution:

1.      Open a Command Prompt window.

2.      Enter nslookup computer name. For example, if you are testing name resolution for a computer named server1 on your own network, enter nslookup server1. If you are testing name resolution for Internet addresses, enter nslookup www.myglobalcompany.com.

3.      Close the Command Prompt window.

Procedure: Troubleshoot Connectivity Using Tracert

To use tracert to troubleshoot TCP/IP connectivity:

1.      Open a Command Prompt window.

2.      Enter tracert IP address or computer name.

3.      Close the Command Prompt window.

Procedure: Troubleshoot Connectivity Using IPConfig

To use IPConfig to verify your IP addressing information:

1.      Open a Command Prompt window.

2.      Enter ipconfig /all. This command displays not only the computer’s IP address configuration, but also information about its DNS and DHCP servers (if applicable).

3.      Close the Command Prompt window.

Procedure: Troubleshoot Automatic TCP/IP Configuration Using IPConfig

To use IPConfig to resolve dynamic IP addressing:

1.      Open a Command Prompt window.

2.      Enter ipconfig /release to release the IP address you leased from the DHCP server.

3.      Enter ipconfig /renew to attempt to lease a new IP address.

4.      Close the Command Prompt window.

Procedure: Configure Proxy Settings

To configure proxy settings:

1.      In the Internet Options dialog box, select the Connections tab.

2.      Click LAN Settings.

3.      Check the Use a Proxy Server for your LAN check box.

4.      Click Advanced.

5.       In the Proxy Settings dialog box, enter the address and the port number for the required proxy servers.

6.      Click OK three times.

7.      Close the Internet Explorer window.

                                                                                      ———————— Thanks

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1 Comment

  1. sorfuddin ahmad
    sorfuddin ahmad on

    thanks for you post how Maintain and Troubleshoot Network Connections
    bcoz when we are work & use IP addressing system in our network it can be small or large network however your post that means your advice is useful for us in our practical field.So thanks & stay fine

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