iSTAR Edge G2 Controller Installation and Configuration Guide 26
Cluster Configurations
iSTAR Edge G2 controllers use cluster configurations to distribute information and control actions to connected components
without host intervention. iSTAR hardware in cluster configurations can perform many actions locally and share information
with other cluster members even when the controller is not communicating with the host (for example, during a
communications failure).
iSTAR controllers must belong to a user-defined group called a cluster. Clusters can contain 1 to 16 controllers with one of the
controllers designated as the Master. The Master acts as a relay agent to the Host for all controllers in the cluster. There are
two different types of clusters based on whether or not the data transfers are encrypted. Encrypted clusters employ the
Advanced Encryption Standard (AES) utilizing 256-bit FIPS-197.
NOTE
iSTAR Edge G2 controllers must be used within a TLS 1.3 encrypted cluster.
Master and Member Configuration
Each cluster has one controller that serves as the master. All other controllers in the cluster are cluster members. The master
manages all communications between the cluster and a C•CURE host computer.
Cluster members can communicate with each other via the master, over an Ethernet network. Cluster members cannot
communicate with each other directly. In Cluster Member Communication figure, the diagram on the left shows how cluster
member A communicates with the host via the master. The diagram on the right shows how cluster member A communicates
with cluster member B via the master.
Figure 3:Cluster Member Communications
Single Master Configurations
To ensure continuous connection, the iSTAR Edge cluster can communicate with C•CURE using a primary and optional
communication secondary path, configured on a single master controller.
The Single Master Configuration figure, below, shows primary and secondary communications using a single master.
To Next Page
Loading...
