Help Center/ Cloud Connect/ User Guide/ Cloud Connection Operation Guide/ Network Instances/ Network Instance Overview
Updated on 2025-04-16 GMT+08:00
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Network Instance Overview

What Is a Network Instance?

A network instance can be a VPC or virtual gateway.
  • VPCs can be connected using a cloud connection.
  • If VPCs are connected by a cloud connection, virtual gateways associated with each VPC can be loaded to this cloud connection to allow the on-premises data center to communicate with these VPCs.

In Direct Connect, a virtual gateway associates a virtual interface with a VPC so that the on-premises data center can access this VPC. For more information about Direct Connect, see What Is Direct Connect?

Figure 1 How Direct Connect works

Constraints on Network Instances

  • If network instances are in the same region, they can communicate with each other by default after they are loaded to a cloud connection.
  • If network instances are in different regions, purchase a bandwidth package and assign inter-region bandwidths. For details, see Buying a Bandwidth Package and Assigning an Inter-Region Bandwidth.
  • You can only load one network instance to a cloud connection.
  • If a VPC is loaded, the associated virtual gateway cannot be loaded.
  • To load a network instance in another account, you must ask that account to grant you the permission to load the network instance to your cloud connection.
  • Loading 100.64.0.0/10 to a cloud connection may cause services such as OBS, DNS, and API Gateway to become unavailable.
Parent topic: Network Instances