3.2 Example 2: Initial Deployment Synchronization to Replica DSS

When the DSS is configured as a replica of the USS, it synchronizes target groups and update deployments from the USS in addition to updates. This example describes the message exchanges that are required to accomplish this synchronization when a DSS communicates with a USS. This is a continuation of the initial update synchronization example, described in section 3.1, for a replica DSS that is specific to replica downstream servers. This scenario supports the use case in section 2.5.3.5, Synchronize Server - Server Management Tool.

The following sequence diagram shows the messages that are exchanged between the DSS and USS for this example. The messages in this sequence are part of the WSUSSS protocol [MS-WSUSSS].

Sequence diagram for initial deployment synchronization to a replica DSS

Figure 8: Sequence diagram for initial deployment synchronization to a replica DSS

The USS provides the list of all target groups and update deployments as part of the GetDeployments response during the first synchronization. The response also contains an anchor for use in subsequent GetDeployments requests. On subsequent synchronizations, only the changes since that previous synchronization are returned. For more information about message details and processing requirements, see [MS-WSUSSS] section 3.1.4.10 and section 3.2.4.3.