The floating service address must span two or more discrete hardware instances in order to continue operation with the loss of one physical machine.
浮动服务地址必须跨越两个或多个离散的硬件实例，以便在一个物理机器连接丢失的情况下继续操作。
2
In this world view, the data is represented on the Web with (at least) two addresses (URLs) : one address holds a human-consumable format, and one a machine-consumable format.
This 32-bit IP address has two parts: one part identifies the network (with the network number) and the other part identifies the specific machine or host within the network (with the host number).