联通将重构云数据中心网络：有望打破运营商城邦体制
根据思科的调研报告，全球数据中心总流量五年内将增长三倍，IDC互联和用户访问IDC流量总和超过全球公网IP总流量，现在的IP网将无法承载全球数据中心产生的井喷流量，网络架构将被颠覆。
同时，传统IDC向云计算中心服务转型面临非常巨大的网络挑战：大型的云数据中心要求服务器数量以万为单位来增长，服务器数据总量都在1000PB以上；同时，数据中心间横向流量占比也会逐步的提升，这就要求数据中心的网络是大容量、无阻塞、低时延的交换网络，数据中心互联的需求也日益迫切。
可以说，在云计算这种环境下，它对网络的需求，诸如时延、质量和传统IDC是截然不同的，云计算业务从根本上改变了计算模型和流量模型，然后不断对网络延时和带宽提出了更高要求。而且网络流向也发生了改变，从传统意义上的南北流量，转变成了IDC到IDC之间或者是资源池之间的横向流量。
国内外的部分领先运营商已经注意到了这个转变。以日本的KDDI为例，它就已经基于VPLS构建了全国范围内的IDC互联平面，为用户快速开通互联管道。同时在同城小范围内也开通了DC-LAN，主要用来整合DC内的资源池，把数据中心内零散资源整合成一个整体满足用户使用。在国内，上海电信也做了一个基于类似KDDI DC-LAN的创新，将原来的南北流量转变成了东西流量，大大减轻了到163骨干网链路的压力。
在这方面，谷歌的案例最为业界熟知。谷歌利用光纤资源把全球12个主要的IDC进行了互联，利用集中部署的TE工程，通过SDN技术实现统一调度，宣称可以达到95%的链路利用率。这在传统的互联网IP网络中不可想象的，运营商基本上到70%是肯定要进行扩容的。作为国内互联网巨头，腾讯也在这方面做了些创新，腾讯把全国规划为四大区域，每个区域部署20到30万台量级的，进而进行数据中心节点互联。
“无论是运营商还是互联网厂商，都在对自己的数据中心网络进行演进。他们已经意识到，影响服务体验的重要因素已经不是用户‘最后一公里’的问题，因为现在随着光网络的部署和发展，网络时延、速率、质量都已经不是问题。如何把内容资源越来越近的向用户端去靠近，拉近资源到用户的距离才是最重要的。”
联通未来演进路径：构建三张平面
从实际情况来看，中国联通也的确正在沿着这条道路前行。
据刑鑫介绍，基于分布分区的覆盖模式，中国联通通过十大数据中心基地网络分区域的覆盖全国，其中定位了几个比较大的数据中心，还有区域流向比较明显的数据中心，主要来做全国性覆盖，其他诸如西安、哈尔滨等区位比较偏的数据中心，主要进行区域型覆盖。
基于学习国内外互联网公司和运营商先进的经验，联通提出了云基地网络规划总体思路，主要是三个部分：在高速接入平面上，进行多出口优化，直连169骨干网核心，高网络层次，目标是要多出口且直连China169骨干核心网，推动基地区域辐射周边省及热点城市，最大程度最优覆盖用户群。
在互联平面，依托联通的骨干传输系统，建立十大基地高速互联平面，采用成本较低的二层组网或为客户提供管道服务，面向云业务客户销售IDC互联带宽，做到流向可控。
温州高防服务器租用测试IP：122.228.8.** 美国测试IP：208.64.123.**
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