AD Replication

Force (near) Instant Replication

• Open AD Sites and Services
• Select a IP Site Link (Under Inter-Site Transports)
• Right Click -> Properties -> Attribute Editor
• Change 'options' attribute to 1 (USE_NOTIFY)

This will cause replication across this site link to happen almost immediately (Like when DC's are in the same site, approximately 15 sec). Essentially when a DC receives a change, it broadcasts a change notification to the other DC, which then replicates the changes as soon as the notification is received.

Only for fast / low latency site links!

References

http://www.mdmarra.com/2013/07/making-active-directory-replication.html