摘要
城域IDC的建设主要有2种拓扑连接方案,一种是IDC直连骨干网,另一种是由城域网转接骨干网。目前,中小型城市IDC以城域转接为主,各省仅有少量重点IDC会直连骨干网。然而随着网络流量的上升,以及业务上下行流量比例的变化,2种方案的优劣正发生着改变。从建设投资的角度对上述2种连接方案进行了对比分析。将总投资分为了设备端口投资和链路建设投资2部分,并基于需求带宽进行了详细的估算。最终,给出了一个公式形式的推导结论,并针对多种典型情况给出了相应的简化应用结论。
There are two kinds of topology connection schemes for regional IDC construction. One is IDC directly connecting to backbone network,and the other is transferring from the metropolitan network. At present,the second scheme is used in small and medium-sized cities. And in each city,only a few key IDCs are connected to backbone network directly. However,with the increasing of network traffic,as well as the business flow rate changes,the pros and cons of the two schemes are changing.From the aspect of construction and investment,it compares the above schemes. The total investment is divided into port investment and link investment,and is calculated based on the required bandwidth. Finally,a formula form conclusion is given,and a variety of simplified practical conclusions are given for the corresponding typical situations.
出处
《邮电设计技术》
2018年第1期44-48,共5页
Designing Techniques of Posts and Telecommunications
关键词
城域IDC
连接方案
投资估算
成本对比
Regional IDC
Connection scheme
Investment calculation
Investment comparison
