Domain Controller Troubleshooting with DCDIAG , REPADMIN , and NETDIAG

DCDIAG

DCDIAG analyzes the state of domain controllers in a forest or enterprise and reports any problems to help in troubleshooting.

Details available at MS TechNet.

Example: dcdiag.exe /V /D /C /E > c:\dcdiag.log

REPADMIN

Repadmin.exe is a Microsoft Windows 2000 Resource Kit tool that is available in the Support Tools folder on the Windows 2000 CD-ROM. It is a command-line interface to Active Directory replication. This tool provides a powerful interface into the inner workings of Active Directory replication, and is useful for troubleshooting Active Directory replication problems.

Example: repadmin.exe /showrepl dc* /verbose /all /intersite > c:\repl.txt

Details available at MS TechNet.

NETDIAG

This command-line diagnostic tool helps to isolate networking and connectivity problems by performing a series of tests to determine the state of your network client. These tests and the key network status information they expose give network administrators and support personnel a more direct means of identifying and isolating network problems. Moreover, because this tool does not require parameters or switches to be specified, support personnel and network administrators can focus on analyzing the output rather than on training users how to use the tool.

Example (to be run on each DC): netdiag.exe /v > c:\netdiag.log

Details available at MS TechNet.