> For the complete documentation index, see [llms.txt](https://docs.vngcloud.vn/vng-cloud-document/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vngcloud.vn/vng-cloud-document/vnetwork/cross-connect/usecase.md). # UseCase Suppose a business has two branches, one in Ho Chi Minh City and one in Hanoi. The system already has a VPC in the Ho Chi Minh region and a VPC in the Hanoi region. To allow these two branches to communicate with each other through a private network, the Cross Connect connection will link the VPCs of the two branches in Ho Chi Minh and Hanoi. ### **Implementation Solution:** 1. Each branch has its own VPC (if not, at least one VPC must be created at each branch); 2. Create a Cross Connect connection between Ho Chi Minh and Hanoi; 3. Select and purchase the appropriate bandwidth package for the connection between the two regions; 4. Link the two VPCs through the Cross Connect connection; 5. Set up communication between the two VPCs via Cross Connect. ### **Advantages:** * **Easy to use**: With a few simple steps, businesses can establish inter-regional connections between VPCs; * **High performance**: Cross Connect leverages the global network infrastructure of GreenNode to provide high-quality, low-latency connections with bandwidth that can be flexibly adjusted to meet changing business needs. **Limitations:** * A Cross Connect connection cannot be created between VPCs with overlapping CIDR blocks; * Bandwidth adjustment for connections between regions is limited depending on the region connection. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.vngcloud.vn/vng-cloud-document/vnetwork/cross-connect/usecase.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.