Replication within a site occurs as a response to changes elsewhere in the site. Replication across sites occurs based on the replication schedule and interval. It is also possible to enable change notifications across sites.
When a change occurs on a domain controller, two configurable intervals determine the delay between the following events:
- Notification to the first partner.
- Notification to each subsequent partner.
The above two intervals serve to:
- Stagger network traffic caused by replication.
- Spreads out the load of responding to replication requests from its partners.
The following table lists the default notification delays:
Operating system | Notify first partner (sec) | Subsequent partner (sec) | Forest functional level |
Windows 2000 | 300 | 30 | Windows 2000 |
Windows Server 2003 (upgraded from Windows 2000) .gif) Note |
|---|
| If you changed the default values, then those values that you set are retained after you upgrade from Windows 2000 to Windows Server 2003. |
| 300 | 30 | Windows 2000 |
Windows Server 2003 | 15 | 3 | Windows 2000 |
Windows Server 2003 (either upgraded from Windows 2000 or a clean install) | 15 | 3 | Windows Server 2003 |
The following table lists the storage location of notification delay values for each operating system.
Operating system | Location | Attribute |
Windows 2000 Server | HKLM\SYSTEM\CSS\Services\NTDS\Parameters | - Replicator notify pause after modify (secs)
- Replicator notify pause between Directory System Agent (DSAs) (secs)
|
Windows Server 2003 | Cross-reference object for each directory partition in the configuration partition. | - msDS-Replication-Notify-First-DSA-Delay
- msDS-Replication-Notify-Subsequent-DSA-Delay
|
Repadmin /notifyopt could be used to view or change the notification timing settings of a specified directory partition in Windows Server 2003.
Syntax
repadmin /notifyopt <DC_LIST> <NamingContext> [/first: Value] [/subs: Value]
Parameter | Definition |
<DC_List> | Specifies the host name of a domain controller, or a list of domain controllers separated by a space. For details about <DC_LIST>, see repadmin /listhelp. |
<NamingContext> | Specifies the distinguished name of the directory partition on the source domain controller. |
/first | The number of seconds after a change is made before the domain controller notifies its first replication partner that there is a change. |
/subs | Once the first replication partner is notified of a change, the subs parameter specifies the number of seconds to wait before notifying the next replication partner. |
Example 1: Displaying the default notification delay on the ForestDnsZones partition
Example 2: Changing the defaults to 300/30 on the ForestDnsZones
.gif)
| Note |
|---|
| In order to make this change, you have to run /notifyopt against the Domain Naming Master. See the highlighted text in figure 3.8.2. |