:original_name: cc_01_0009.html

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Application Scenarios
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A central network enables enterprise routers to communicate with each other, no matter whether they are in the same region or different regions.

-  Connecting VPCs in different regions by attaching them to enterprise routers in the corresponding regions

   Enterprise routers in different regions are added to a central network as attachments so that resources in these regions can communicate with each other over one network.


   .. figure:: /_static/images/en-us_image_0000002445430860.png
      :alt: **Figure 1** Cross-region communication between enterprise routers

      **Figure 1** Cross-region communication between enterprise routers

-  By flexibly changing the central network policies, you can set up a global network more conveniently.