B
-
7
Cluster Node Support
Under varying cases administrators may like to group certain product instances as a
logical unit, or cluster (for example products installed under a cluster environment
present all installed product instances under one cluster group). However, from the
Control Manager server's perspective, each product instance that goes through the
formal registration process is regarded as an independent managed unit and each
managed unit is no different from another.
Through MCP, Control Manager supports cluster nodes.
Control Manager Agent Heartbeat
To monitor the status of Network VirusWall Enforcer 2500 devices, Control Manager
agents poll Control Manager based on a schedule. Polling occurs to indicate the
status of the Network VirusWall Enforcer 2500 device and to check for commands to
the Network VirusWall Enforcer 2500 device from Control Manager. The Control
Manager Web console then presents the product status. This means that the Network
VirusWall Enforcer 2500 device’s status is not a real-time, moment-by-moment
reflection of the network’s status. Control Manager checks the status of each
Network VirusWall Enforcer 2500 device in a sequential manner in the background.
Control Manager changes the status of Network VirusWall Enforcer 2500 devices to
offline, when a fixed period of time elapses without a heartbeat from the Network
VirusWall Enforcer 2500 device.
Active heartbeats are not the only means Control Manager has for determining the
status of Network VirusWall Enforcer 2500 devices. The following also provide
Control Manager with the Network VirusWall Enforcer 2500 device’s status:
•
Control Manager receives logs from the Network VirusWall Enforcer 2500
device. Once Control Manager receives any type of log from the Network
VirusWall Enforcer 2500 device successfully, this implies that the Network
VirusWall Enforcer 2500 device is working fine.
•
In two-way communication mode, Control Manager actively sends out a
notification message to trigger the Network VirusWall Enforcer 2500 device to
retrieve the pending command. If server connects to the Network VirusWall
Enforcer 2500 device successfully, it also indicates that the product is working
fine and this event will be counted as a heartbeat.