AD PowerShell - Replication

Active Directory Replication Commads

Check Replication Status and provides a summary of replication across all DCs.

repadmin /replsummary

Check Replication Partners of a DC and show the last replication attempt and status.

repadmin /showrepl

Save output in CSV

repadmin /showrepl * /csv >showrepl.csv

Forces replication across all DCs in the forest.

repadmin /syncall /APeD

Force Replication to a Specific DC

repadmin /replicate <DestinationDC> <SourceDC> <NamingContext>

Example

repadmin /replicate DC1 DC2 "DC=rs,DC=local"

Monitor DC Replication Status Using PowerShell (Lists AD replication failures)

Get-ADReplicationFailure -Target * | Format-Table Server, FirstFailureTime, FailureCount

repadmin /syncall /APeD

/A (All Partitions)
- Replicates all directory partitions, including:
  - Domain partition (user, group, computer objects)
  - Configuration partition (forest-wide configuration settings)
  - Schema partition (schema definitions for AD objects)
  - Application partitions (like DNS zones, if applicable)
/P (Push Changes Immediately)
- Forces the source DC to push changes to all its replication partners immediately, instead of waiting for the normal replication cycle.
/e (Enterprise-Wide Replication)
- Ensures that replication occurs across sites, not just within the same site.
- Without this switch, replication would be limited to DCs in the same site.
/D (Distinguished Name Display)
- Displays the distinguished names (DN) of the directory partitions being replicated, making it easier to track.

Runs a test for replication issues.

dcdiag /test:replications