Instances in a cluster occasionally use RPCs for intra-cluster communication. When the cluster is started, Adaptive Server automatically adds each cluster instance to the sysservers table, and removes any cluster instances from sysservers that are no longer in the cluster definition. This is also done when instances are dynamically added and dropped at runtime. These sysservers entries have the cluster instance status bit set. Because intra-cluster RPCs are intended for specific instances, the sysservers entries do not have the enable login redirection status bit set.
