The first parameter is the symbolic name that you want to assign to the appliance (keep this name short, because it will be used often).
第一个参数是您想要分配到设备的符号名(这个名称尽量要短,因为经常会用到)。
The symbolic name used by applications and regular users should not be any of the host names referenced in Table 1, and they should only use an alias to these host names, as shown in Table 2.