The AD Replication Monitor utility (Replmon.exe) was introduced with the Windows Server 2000 Support Tools many years ago as a GUI mechanism for performing certain DC admin tasks. With the release of Window Server 2008 Replmon was not included and was replaced with Repadmin.exe. The most common operation with Replmon was to have it ”push” AD replication outbound from a given DC where someone had made a change and wanted it to propagate quickly to all partners. I put ”push” in quotes because AD replication is always pull-based; there is no such thing as push. What Replmon was actually doing was contacting the partner DCs and telling them to replicate inbound immediately. To do this you would:

Full Article: DS Blog