Microsoft Application Center 2000 Resource Kit 2001
During synchronization, Application Center replicates controller and cluster configuration settings to all of the cluster members.
NOTE
During synchronization, a member that is in offline state (for load balancing) is still synchronized to the controller unless you explicitly disable synchronization on that member.
Even if synchronization is disabled on a member, there are certain settings that are still copied from the controller to each member on an ongoing basis. This is done to ensure that every member has up-to-date information about the cluster infrastructure and topology. Some examples of this configuration information are: IP address binding, network adapter information, and server computer names.
See also: Appendix G, "Managing IISIP Bindings."
Replicating Network Settings
The controller replicates several network settings across the cluster, including the following:
- The load-balanced IP address on the front-end network adapter in a multi-adapter configuration
- IP subnet
- Default gateway and gateway cost metric
- DNS server search order
- DNS domain
- Primary and Secondary WINS server
- WINS node type
Replicating NLB Settings
In a cluster that has NLB enabled, the controller replicates the following information:
- The cluster name.
- The cluster IP address.
- The message exchange period (in milliseconds) between cluster nodes.
- The number of messages that can be missed from a node before initiating convergence.
- The User Datagram Protocol (UDP) that should be used to receive remote control commands.
- A switch that specifies whether or not remote control and enumeration are enabled for the controller.
- The start and end port numbers for disabled port rules.
- The start port number, end port number, protocol, and affinity for load-balanced port rules.