How does the N8500 implement failover?
Each node of the N8500 has at least one physical IP address and one virtual IP address. The virtual IP address is used for running services. The virtual IP address of each node is a resource in the cluster. The cluster always monitors the status of each virtual IP address through the heartbeat network. If a node fails, the virtual IP address of that node becomes abnormal and will be automatically switched over to another node. In this way, failover is achieved. Services on the failed node also fail over to the other node, thereby ensuring service continuity.