This parameter is applicable for an APEX where chassis redundancy is enabled. This parameter will report the chassis redundancy communication status. These are based on its knowledge about the secondary APEX from heartbeat messages. The APEX configured as primary will report the following values: disconnected(0): No heartbeat messages are received from secondary or communication timed out. connected(1): Heartbeat messages are received from secondary and communication has not timed out. The APEX configured as secondary will report the following values: disconnected(0): No heartbeat messages are received from primary or communication timed out. connected(1): Heartbeat messages are received from primary and communication has not timed out.