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Binding Private Network CLB to EIP

Last updated: 2022-07-28 17:59:43

    Private network CLB is used to distribute requests from Tencent Cloud's private network. It doesn't have a public IP and cannot communicate with the public network. If you need to use a private network CLB instance and want it to communicate with the public network, you can bind it to an EIP for public network access.

    Note:

    The feature of binding the EIP to the private network CLB is in beta test. To try it out, please submit a ticket.

    Limits

    • Region Limits
      • Private network CLB instances are unavailable in Ji'nan, Fuzhou, Shijiazhuang, Wuhan, and Changsha regions.
    • Product Attribute Limits
      • This feature is supported only for bill-by-IP accounts but not bill-by-CVM accounts.
      • This feature is supported only for CLB but not classic CLB.
      • This feature is supported only for private network CLB instances in VPCs but not in the classic network.
    • Feature limits
      • Currently, private network CLB doesn't support port ranges.
      • A private network CLB instance can only be bound to an EIP that is in the same region and not bound to other resources.
      • Each private network CLB instance can only be bound to one EIP.
      • After a private network CLB instance is bound to an EIP, its features will be similar to those of a public network CLB instance, but public network CLB cannot be split into private network CLB and EIP.
    • Security Group Limits
      • After a private network CLB instance is bound to an EIP, the security group of the instance takes effect for traffic from the instance but not from the EIP. After the "Allow by Default" feature is enabled in the security group, it will take effect for both types of traffic.

    How It Works

    Method 1: Choose EIP when purchasing CLB

    展开&收起
    1. Log in to the Tencent Cloud console and go to the CLB purchase page.
    2. Select the following CLB configuration items as needed. For other configuration details, see Purchase Methods.
      ParameterDescription
      Billing ModeSelect the Pay-as-You-Go mode.
      RegionSelect a region. For more information on the regions supported by CLB, see Region List instructed in Common Params.
      Instance TypeOnly CLB instance type is supported.
      Network TypeSelect the Public Network type.
      EIPSelect EIP. Tencent Cloud will assign you an EIP and a private network CLB instance. Supported EIP types include general IP, accelerated IP, and static single-line IP.

    Method 2: Bind private network CLB to EIP

    展开&收起
    1. Log in to the CLB Console, and click Instance Management on the left sidebar.
    2. Select a region in the top-left corner of the Instance Management page, select the target private network CLB instance in the instance list, and click More > Bind EIP in the Operation column on the right.
    3. In the Bind EIP pop-up window, select the EIP to be bound and click Submit to bind the EIP to the instance.
      Note

      The accelerated IPs and static single-line IPs are in beta test. To try them out, please submit a ticket.

    4. (Optional) Select the target private network CLB instance in the instance list and click More > Unbind EIP in the Operation column on the right to unbind the instance from the EIP.

    References

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