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If you experience a network connection problem. Here are some of the most useful network troubleshooting commands. Just type the command in a Command Prompt Window (CMD.EXE).

IPConfig Command

# ipconfig /all [ Display full Information about Network configuration]

# ipconfig /displaydns [ Displays the contents of the DNS client resolver cache ]

# ipconfig /flushdns [ Clear the local dns cache.]

# ipconfig /registerdns [ Is used for manual dynamic registration for the DNS names and IP addresses that are configured at a computer.]

# ipconfig /release [ Sends a DHCP release message to the DHCP server to release the current DHCP configuration and discard the IP address configuration for all network adapters.]

# ipconfig /renew [ Renews DHCP configuration for all network adaptors. *It does not clear the client resolver cache on client computers.]

Another excellent command is Netsh – Netsh.exe is a command-line scripting utility that allows you to, either locally or remotely, display or modify the network configuration of a computer that is currently running.

# netsh interface ip set dns [ is used to configure the source of DNS server addresses, set a DNS server address, and manage DNS registration behavior. And not to clear client resolver caches.]

# netsh interface ip set address “Local Area Connection” dhcp [ Typing this command changes the interface named “Local Area Connection” to DHCP configuration.]

More about nesth : Visit Petri

And others such as  Ping,Tracert and NSLookup Commands.

Applies to Windows 2000 & XP

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