如果作为一名普通网络用户,在浩瀚的Internet畅游之时,没有人会注意到平静的海面下其实暗流汹涌。一般来说,网络管理者所需要了解的是各个网段的使用情形,频宽的使用率,网络问题的瓶颈发生于何处。当网络问题发生时,必须能够很快地区隔出问题的发生原因,迅速定位到线路问题、网 If you, as an ordinary Internet user, swim in the vast Internet, no one will notice that the subdued sea is actually undercurrent. In general, what network managers need to understand is how each network segment is used, how bandwidth is used, and where network bottlenecks occur. When a network problem occurs, it must be able to quickly isolate the cause of the problem, quickly locate the line problem, the network