说明：  IP 城域网网速变慢分析及参考解决方法 ―― By Heaven于杭州 IP 城域网建成运行后,网络发生故障是不可避免的。一般当网络发生无法连 通、不能浏览Web 等故障时，现象比较明确，容易观察和定位故障点，此类故 障解决起来相对容易。还有一类故障就是网络是通的，但网速变慢。在面对这类 障时，往往会感觉到无从下手。本文为大家介绍引起此类故障常见的原因及排除 方法，和大家共同提高。
(Slow speed of IP MAN and reference solutions - By Heaven in Hangzhou IP MAN up and running, the network failure is inevitable. Even when the network is not generally Pass, can not browse the Web and other failure, are quite clear, easy to observe and locate the fault point, so such Barrier is relatively easy to solve. Another type of failure is the network that pass, but the speed slower. In the face of such Barrier, they often feel unable to start. This article is to introduce a common cause of such failure causes and ruled out Methods, and all together.)