Question : Replication Between 2 Server 2008 Domain Controllers

We have two domain controllers that are also acting as global catalog servers.  We are having some replication issues between both domain controllers.  One of our major issues is that some computers are picking up on group policy changes and others are not.

Both are running Server 2008

What is the first step in troubleshooting this issue?  Is there some type of diagnostic utility?

Answer : Replication Between 2 Server 2008 Domain Controllers

repadmin and dcdiag are two tools that will get you started.  The event logs can also help

Repadmin /replsummary  

dcdiag /v

Group policy replication issues could also mean that you are having issues with sysvol replication.  That could be using FRS or DFSR for replication (depends on your fucnionality level)

That should get you started

Thanks

Mike