C•CURE 800/8000 Hardware Configuration Guide - Tyco Security ...

Cluster Communications Overview• Use the iSTAR Configuration Utility to manually configure the master.After you configure the master, it reboots and then establishes aconnection with the C•CURE System Host. The host downloadscardholder and configuration information to the master.After downloading information from the host, the master auto-configuresits cluster members. Cluster members then reboot and establishconnections with the master. See the iSTAR eX Installation andConfiguration Guide for more information.Downloading Cardholder and Configuration InformationThe following information is downloaded to the master and its clustermembers from the host:• Cardholder data for personnel with clearances on the controller.• Configuration information for inputs, outputs, and readers on thecontroller.• Events that are controlled by the controller.• Cluster information that the controller uses to communicate with othercluster members.NOTEThe C•CURE System host downloads cardholder and configurationinformation to the controller under the following conditions:• Initial configuration;• Each time the controller is powered on;• Each time the cluster is taken offline/online.Maintaining CommunicationsAlthough a communications link may be open between two devices, longperiods of time can exist when devices do not communicate because of lowsystem activity. In the absence of this type of communications, devices send“keep-alive” messages, called Connection Verification messages, to verifythat connections are alive.C•CURE 800/8000 Hardware Configuration Guide 2–29