Attaching a floating IP to a virtual network interface in the console

To attach a floating IP to an existing virtual network interface, follow these steps.

1. From your browser, open the IBM Cloud console and log in to your account.
2. Select the Navigation menu , then click Infrastructure > Network > Virtual network interfaces.
3. Click the name of the virtual network interface that you want to attach a floating IP to in the Virtual network interfaces for VPC table.
4. In the Floating IPs section, click Attach.
5. In the Attach floating IP panel that appears, you can do one of the following:
   • Reserve a new floating IP by clicking Reserve new floating IP and completing the requested information in the panel that appears
   • Select an existing floating IP from the Floating IP addresses menu.
6. Click Attach to attach the floating IP to your virtual network interface, or click Cancel.

Attaching a floating IP to a virtual network interface from the CLI

Before you begin, set up your CLI environment.

Then run the following command:

ibmcloud is floating-ip-reserve FLOATING_IP_NAME (--zone ZONE_NAME | --nic TARGET_INTERFACE [--in TARGET_INSTANCE | --bm TARGET_BARE_METAL_SERVER | --vni TARGET_VIRTUAL_NETWORK_INTERFACE]) [--resource-group-id RESOURCE_GROUP_ID | --resource-group-name RESOURCE_GROUP_NAME] [--output JSON] [-q, --quiet]

Where:

FLOATING_IP_NAME

ID or name of the floating IP.

--zone

ID or name of the zone.

--nic TARGET_INTERFACE

The target interface.

--in TARGET_INSTANCE

The target virtual server instance.

--bm TARGET_BARE_METAL_SERVER

The target bare metal server.

--vni TARGET_VIRTUAL_NETWORK_INTERFACE

The target virtual network interface.

--resource-group-id RESOURCE_GROUP_ID

The ID of the resource group.

--resource-group-name RESOURCE_GROUP_NAME

The name of the resource group.

--output

Specify output format, only JSON is supported. One of: JSON.

-q, --quiet

Suppress verbose output.

Attaching a floating IP to a virtual network interface with the API

To attach a floating IP address to a virtual network interface with the API, follow these steps:

1. Set up your API environment with the right variables.

2. Store any additional variables to be used in the API commands; for example:

   • version (string): The API version, in format YYYY-MM-DD.
   • virtual_network_interface_id (string): The virtual network interface identifier.
   • floating_ip_id (string): The floating IP identifier.

3. When all variables are initiated, attach the floating IP address to the virtual network interface:

   curl -X PUT \
   "$vpc_api_endpoint/v1/virtual_network_interfaces/$virtual_network_interface_id/floating_ips/$floating_ip_id?version=$version&generation=2" \
   -H "Authorization: Bearer $iam_token"
   

Attaching a floating IP to a virtual network interface with Terraform

The following example attaches a floating IP address to a virtual network interface by using Terraform:

resource "ibm_is_virtual_network_interface_floating_ip" "my_vni_floatingip" {
  virtual_network_interface = ibm_is_virtual_network_interface.my_virtual_network_interface.id
  floating_ip = ibm_is_floating_ip.my_floatingip.id
}