What is Cloud Connect？

What is Cloud Connect？

Cloud Connect knowledge for users from beginner level to expert level

Cloud Connect knowledge for users from beginner level to expert level

Service Overview
What is Cloud Connect?

Cloud Connect allows you to connect Virtual Private Clouds (VPCs) in different regions to allow instances in these VPCs

to communicate over a private network as if they were within the same network.
CC and Other Services

How Cloud Connect interacts with other services
Getting Started
Connecting VPCs in the Same Account

You can create a cloud connection and load the VPCs in the same region and the same account to enable cross-VPC communications.

Connecting VPCs in the Same Account shows an example.

User Guide
Viewing a Cloud Connection

You can view details about a cloud connection you created.
Modifying a Bandwidth Package

You can modify the bandwidth of a bandwidth package you have purchased. You can increase or decrease the bandwidth.

Function Overview

Cloud Connect

Cloud Connect allows you to connect Virtual Private Clouds (VPCs) in different regions to allow instances in these VPCs to communicate over a private network as if they were within the same network.

You need to load network instances from these regions to a cloud connection and assign bandwidth for cross-region communications. (A network instance can be a VPC you create, a VPC of another user, or a virtual gateway you create for access from your on-premises data center.)

Network Instances

You need to load network instances from these regions to a cloud connection and assign bandwidth for cross-region communications. (A network instance can be a VPC you create, a VPC of another user, or a virtual gateway you create for access from your on-premises data center.)

  1. VPCs in different regions can be loaded to a cloud connection to enable communications among them.
  2. A virtual gateway can be loaded to a cloud connection to allow the on-premises data center to communicate with one or more VPCs.


Bandwidth Package

A bandwidth package is required for inter-region communications regardless of whether:

  1. The two regions are within the same geographic region.
  2. The two regions are in different geographic regions.

Bandwidth packages are not required for communications among network instances in the same region.

Billing Buying a Bandwidth Package Binding a Bandwidth Package to a Cloud Connection

Inter-region Bandwidth

Inter-region bandwidth is used for communications between regions. If there is more than one inter-region bandwidth, the sum of all inter-region bandwidths cannot exceed the total bandwidth of the bandwidth package.

Two inter-region bandwidths are assigned from the bandwidth package for communications between the Chinese mainland and Asia Pacific. The sum of the two inter-region bandwidths cannot exceed the maximum bandwidth in the bandwidth package.

FAQs

  • How Do I Configure Cloud Connect?

    To configure Cloud Connect, perform the following steps on the management console:

    · Create a cloud connection, which will connect all the network instances loaded to it and allow the instances to communicate with each other over a private network.

    · Load the network instances that need to communicate with each other to the cloud connection. Two types of network instances are supported, VPC and virtual gateway.

    · If network instances are in different regions, buy a bandwidth package and bind it to the cloud connection.

    · Assign inter-region bandwidths for cross-region network communications.


  • What Can I Do If Cross-Region Network Communications Fail?

    After you complete all the required configuration, you can use ICMP or Telnet to test network connectivity. If network communications fail, do the following to locate the fault:

    · Check whether the security group containing the ECSs in the destination VPC allows ICMP or Telnet traffic over the corresponding port in the inbound direction. If ICMP or Telnet traffic is not allowed, the packets will be blocked by the security group.

    · Check whether a network ACL is configured for the subnet in the destination VPC to deny the communications between the source and destination VPCs. If such an ACL exists, the packets will be blocked by the ACL.

    · Check whether there are overlapping subnets in the source and destination VPCs. If they have overlapping subnets, the packets will not be sent to the subnet of the destination VPC.

    · Check whether an inter-region bandwidth is assigned between source and destination regions.

    · Use ICMP or Telnet to test whether the VPCs in different regions can communicate with each other.


  • Is Cloud Connect an Out-Of-The-Box Service?

    All operations that you perform on Cloud Connect take effect immediately, except for the cross-border permit, which takes effect only after it is approved by China Unicom.

  • What Are the Differences Between Cloud Connect and VPC Peering?

    Cloud Connect differs from VPC Peering in the following ways:

    · Interworking capabilities: VPC Peering can only connect two VPCs in the same region, but Cloud Connect can connect multiple VPCs either in the same region or in different regions.

    · Network capabilities: After you create a VPC peering connection, you need to manually configure routes. With Cloud Connect, you do not need to configure routes.

    · Th bearer network: VPC Peering uses the data center network, but Cloud Connect uses a DCI backbone network.

    · Billing: VPC Peering is free. With Cloud Connect, communications between VPCs in the same region is also free, but cross-region communications require a bandwidth package, which is not free.


  • How Can Cloud Connect Offer High Availability?

    · If Cloud Connect is used to connect VPCs in the same region, Cloud Connect is deployed in clusters, and multiple clusters are deployed across AZs.

    · If Cloud Connect is used to connect VPCs in different regions, the HUAWEI CLOUD backbone network is used to connect the VPCs. The network between every two regions has at least two links that are configured in active/standby mode.

    · Cloud Connect has a dedicated dialing test platform to monitor the status of clusters and links in real time.


  • How Can I Apply for a Cross-Border Permit?

    Preparing for Materials

    You need to provide the following materials and ensure that all materials are stamped with your company's official seal:

    · A scanned copy of your company's business license

    · A scanned copy of the Cloud Connect Cross-Border Circuit Service Agreement

    · A scanned copy of China Unicom Letter of Commitment to Information Security of the Cross-Border Circuit Service

    Applying for a Cross-Border Permit

    · Log in to the management console.

    · Hover on the upper left corner to display Service List and choose Networking > Cloud Connect.

    · In the navigation pane on the left, choose Cloud Connect > Cross-Border Permit.

    · Click Submit Application.

    · Fill in the enterprise and representative information, and upload the prepared materials.

    · Click Submit.

    After you submit the application, the status will change to Pending approval. The review takes about one working day. When the status changes to Approved, you can buy bandwidth packages.

Learn More

Getting Started

Cloud Connect User Guide

Technical Documents

Cloud Connect Help Center

FAQs

What Is the Procedure of Configuring a Cloud Connection?
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