Help Center/ Huawei Cloud Flexus/ User Guide/ FlexusX/ Managing VPCs/ What Is Virtual Private Cloud?

Updated on 2024-10-08 GMT+08:00

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What Is Virtual Private Cloud?

Overview

Virtual Private Cloud (VPC) allows you to provision logically isolated virtual networks for your FlexusX instances. You can define security groups and CIDR blocks for each VPC. This facilitates internal network configuration, management, and change. You can also define rules to control communications between FlexusX instances in the same security group or across different security groups.

For more information about VPC, see Virtual Private Cloud User Guide.

Elastic Network Interface

An elastic network interface is a virtual network card that can be attached to a FlexusX instance in a VPC. You can use network interfaces to manage networks for FlexusX instances. There are two types of elastic network interfaces: primary network interfaces and extension network interfaces.

A primary network interface is created together with an instance by default, and cannot be detached from the instance.
An extended network interface is created on the Network Interfaces console, and can be attached to or detached from an instance.

Related Operations

Operation	Description
Attaching extension network interfaces	If your FlexusX instance requires multiple network interfaces, you can attach extension network interfaces.
Detaching extension network interfaces	You can detach extension network interfaces from your FlexusX instance if they are no longer needed. Only extension network interfaces can be detached from the FlexusX instance. You cannot detach the primary network interface from it.
Changing a VPC	You can move your FlexusX instance from the current VPC to another.
Modifying a private IP address	You can change the private IP address of the primary network interface for a FlexusX instance on the console.
Assigning a virtual private IP address	A virtual IP address serves as a secondary IP address for a network interface. A virtual IP address can be bound to multiple cloud servers to improve server availability.