Netdiag

Netdiag can be run on all Windows 2000 computers where users want to verify the status of their network connectivity.
Considering it is a commandline tool, mostly experts will be able to benefit from the app’s functions, yet PC novices who are willing to invest some time in getting familiarized with the syntax of the commands can also make the most of it.
Netdiag basically runs several tests so as to assess the current state and functionality of the network, and users can later rely on these results to isolate any connectivity issues detected on their computer or server.
It needs to be emphasized that before running Netdiag, one first needs to bind TCP/IP to one or several network adapters.
When working with Netdiag in Command Prompt, you can set it to display only the quiet output and displays errors, or you can run it in verbose mode so as to get details regarding the currently performed actions. Furthermore, it can also be run in debug mode whenever you need to obtain a more verbose output than the one generated with the previously mentioned command.
Additionally, Netdiag can come in handy to all users who want to quickly locate a domain controller within the domain they specify or to those who are looking to get a list with all the computer accounts of the domain controller.
Last but not least, the utility provides users with complete control over the tests that will be performed on their computer, depending on the results they are most interested in.