Use AssignPrivateIpAddresses with a CLI

Example 1: To assign a specific secondary private IP address to a network interface

The following assign-private-ip-addresses example assigns the specified secondary private IP address to the specified network interface.

aws ec2 assign-private-ip-addresses \
    --network-interface-id eni-e5aa89a3 \
    --private-ip-addresses 10.0.0.82

Output:

{
    "NetworkInterfaceId": "eni-e5aa89a3",
    "AssignedPrivateIpAddresses": [
        {
            "PrivateIpAddress": "10.0.0.82"
        }
    ]
}

For more information, see Secondary IP addresses for your EC2 instances in the Amazon EC2 User Guide.

Example 2: To assign secondary private IP addresses that Amazon EC2 selects to a network interface

The following assign-private-ip-addresses example assigns two secondary private IP addresses to the specified network interface. Amazon EC2 automatically assigns these IP addresses from the available IP addresses in the CIDR block range of the subnet the network interface is associated with.

aws ec2 assign-private-ip-addresses \
    --network-interface-id eni-e5aa89a3 \
    --secondary-private-ip-address-count 2

Output:

{
    "NetworkInterfaceId": "eni-e5aa89a3",
    "AssignedPrivateIpAddresses": [
        {
            "PrivateIpAddress": "10.0.0.93"
        },
        {
            "PrivateIpAddress": "10.0.0.147"
        }
    ]
}

For more information, see Secondary IP addresses for your EC2 instances in the Amazon EC2 User Guide.

Example 1: This example assigns the specified secondary private IP address to the specified network interface.

Register-EC2PrivateIpAddress -NetworkInterfaceId eni-1a2b3c4d -PrivateIpAddress 10.0.0.82

Example 2: This example creates two secondary private IP addresses and assigns them to the specified network interface.

Register-EC2PrivateIpAddress -NetworkInterfaceId eni-1a2b3c4d -SecondaryPrivateIpAddressCount 2

Example 1: This example assigns the specified secondary private IP address to the specified network interface.

Register-EC2PrivateIpAddress -NetworkInterfaceId eni-1a2b3c4d -PrivateIpAddress 10.0.0.82

Example 2: This example creates two secondary private IP addresses and assigns them to the specified network interface.

Register-EC2PrivateIpAddress -NetworkInterfaceId eni-1a2b3c4d -SecondaryPrivateIpAddressCount 2