Abstract: tThe new generation of information technology is driving vigorous development of smart city construction. Under the new situation of the rapid development of smart city construction, the operation and management of the city put forward new demands on the diversity, continuity and elasticity of business support networks. By analyzing the current research status of smart city bearing network architecture, a new smart city safe intelligent bearing network—Single Network Multiplain Network Architecture (hereinafter referred to as smart network) is proposed. The network architecture has the characteristics of security, reliability, high scalability and key business classification. It provides an ideal choice for solving the network architecture of smart city basic bearing network by integrating MPLSVPN, SDN and other network technologies.

Key words: smart city, smart network, single network and multi-plane, network architecture, MPLS-VPN, SDN

摘要： 新一代信息技术正带动智慧城市建设的蓬勃发展，在智慧城市建设快速发展的新形势下，城市的运行管理对业务支撑网络的多样性、连续性和弹性扩展方面提出了新的需求.通过分析当前智慧城市承载网络架构研究现状，提出了“单网多平面”的新型智慧城市安全智能承载网(以下简称“智网”)网络架构.该网络架构具备安全可靠、高可扩展性、关键业务分级保障等特点，通过融合MPLSVPN，SDN等网络技术，为解决智慧城市基础承载网网络架构提供了理想选择.

关键词: 智慧城市, 智网, 单网多平面, 网络架构, 多协议标签交换虚拟专网技术, 软件定义网络