计算机和计算机网络日益普及,为了提高效率,方便获取信息,各家公司都相继建立起自己的计算机网络。对一些大公司来说,网络费用投入比较高,有专业的网络设备和网络管理软件,然而,很多小公司,网络规模很小,也可能只有几十台机器,网络设备简单,没有可网管的设备,甚至没有网管软件, The increasing popularity of computers and computer networks has led to the establishment of their own computer networks one after another in order to increase efficiency and facilitate access to information. For some large companies, the network cost is relatively high, with professional network equipment and network management software. However, for many small companies, the network size is very small, and there may be only tens of machines. The network equipment is simple and there is no network management Equipment, or even no network management software,