By using Cloud Enterprise Network (CEN), you can build private network communication channels between VPCs or between VPCs and on-premises data centers. CEN uses automatic route distribution and learning, which can improve the network convergence and the quality and security of cross-network communication, and achieve the interconnection of all network resources.



Components

CEN consists of the following components:

  • CEN instances

    A CEN instance is the basis of creating and managing your networks.

    To connect your networks worldwide, you must first create a CEN instance, attach networks to it, and then purchase a bandwidth package and configure a bandwidth for cross-region communication.

  • Networks

    The networks attached to CEN are all connected. Networks include Virtual Private Clouds (VPCs), Virtual Border Routers (VBRs), and Cloud Connect Networks (CCNs).

  • Bandwidth packages

    A bandwidth package is required only for cross-region communication. When purchasing a bandwidth package, you must specify the interconnection areas for the network resources to communicate. An area is a collection of Alibaba Cloud regions. You can see the areas that can be connected in the console.

    Note No bandwidth package is required if you want to connect networks in the same region. However, if you want to connect networks in different regions, you must purchase a bandwidth package. By default, 1 Kbit/s bandwidth is provided for connected networks so that you can perform connectivity tests. To run normal services, you must buy a bandwidth package and set a proper connection bandwidth.
    The relationship between areas and regions are shown in the following table.
    Area Included regions
    Mainland China China (Qingdao), China (Beijing), China (Zhangjiakou), China (Shenzhen), China (Hangzhou), China (Shanghai), China (Hohhot)
    North America US (Silicon Valley), US (Virginia)
    Asia Pacific China (Hong Kong), Singapore, Malaysia (Kuala Lumpur), Japan (Tokyo), India (Mumbai), Indonesia (Jakarta)
    Europe Germany (Frankfurt), UK (London)
    Australia Australia (Sydney)

    For example, if you want to connect a network in China (Beijing) with a network in US (Silicon Valley), the areas to be connected are China Mainland and North America. For more information, see Scenarios.