Two helpful tools for monitoring and troubleshooting replication issues are provided in the Support Tools. The first tool is the Replication Administrator (RepAdmin), which is a command-line utility. The second tool is the Replication Monitor (ReplMon), which is a graphical user interface (GUI) utility. Both tools provide similar functionality, albeit one from the command line and one from the GUI.
You run the Replication Administrator from the command line. Most command-line parameters accept a list of the domain controllers you want to work with called DCList and specified as follows:
* is a wildcard that includes all domain controllers in the enterprise.