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Help Center/ Huawei Cloud Flexus_Huawei Cloud Flexus X Instance/ User Guide/ VPC Management/ Attaching Extension Network Interfaces to a FlexusX Instance

Attaching Extension Network Interfaces to a FlexusX Instance

Updated on 2025-02-25 GMT+08:00

Scenarios

An elastic network interface is a virtual network interface 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 can be created on the Network Interfaces tab, and can be attached to or detached from an instance.

If your FlexusX instance requires multiple network interfaces, you can attach extension network interfaces. For details, see Elastic Network Interface Overview.

Procedure

  1. Log in to the FlexusX console, in the upper left corner, click , and select a region.
  2. In the FlexusX instance list, click the name of the FlexusX instance that you want to attach a network interface to.

    The details page of this instance is displayed.

  3. On the Network Interfaces tab, click Attach Network Interface.
    You can use an existing extension network interface or create a new one.
    Figure 1 Attaching an extension network interface

    • Subnet: This parameter is mandatory. You need to select a subnet where the network interface will work.
    • New Private IP Address: This parameter is optional. You can specify a private IP address for the network interface. If it is not specified, the system assigns a private IP address automatically.
    • Security Group: This parameter is mandatory. You can select multiple security groups at a time. The rules of all the selected security groups are applied to the FlexusX instance.
  4. Click OK.

Related Operations

After an extension network interface is attached to a FlexusX instance, you are advised to enable NIC multi-queue to improve network performance. For details, see Enabling NIC Multi-Queue.

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