Maximum IP addresses per network interface

Each instance type supports a maximum number of network interfaces, maximum number of private IPv4 addresses per network interface, and maximum number of IPv6 addresses per network interface. The limit for IPv6 addresses is separate from the limit for private IPv4 addresses per network interface. Not all instance types support IPv6 addressing.

Available network interfaces

The Amazon EC2 Instance Types Guide provides the information about the network interfaces available for each instance type. For more information, see the following:

• Network specifications – General purpose

• Network specifications – Compute optimized

• Network specifications – Memory optimized

• Network specifications – Storage optimized

• Network specifications – Accelerated computing

• Network specifications – High-performance computing

• Network specifications – Previous generation

To retrieve network interface information using the AWS CLI

You can use the describe-instance-types AWS CLI command to display information about an instance type, such as its supported network interfaces and IP addresses per interface. The following example displays this information for all C5 instances.

aws ec2 describe-instance-types \
    --filters "Name=instance-type,Values=c5.*" \
    --query "InstanceTypes[].{ \
        Type: InstanceType, \
        MaxENI: NetworkInfo.MaximumNetworkInterfaces, \
        IPv4addr: NetworkInfo.Ipv4AddressesPerInterface}" \
    --output table

The following is example output.

---------------------------------------
|        DescribeInstanceTypes        |
+----------+----------+---------------+
| IPv4addr | MaxENI   |     Type      |
+----------+----------+---------------+
|  30      |  8       |  c5.4xlarge   |
|  50      |  15      |  c5.24xlarge  |
|  15      |  4       |  c5.xlarge    |
|  30      |  8       |  c5.12xlarge  |
|  10      |  3       |  c5.large     |
|  15      |  4       |  c5.2xlarge   |
|  50      |  15      |  c5.metal     |
|  30      |  8       |  c5.9xlarge   |
|  50      |  15      |  c5.18xlarge  |
+----------+----------+---------------+

To retrieve network interface information using the AWS Tools for PowerShell

You can use the Get-EC2InstanceType PowerShell command to display information about an instance type, such as its supported network interfaces and IP addresses per interface. The following example displays this information for all C5 instances.

Get-EC2InstanceType -Filter @{Name = "instance-type"; Values = "c5.*" } | `
Select-Object `
    @{Name = 'Ipv4AddressesPerInterface'; Expression = {($_.Networkinfo.Ipv4AddressesPerInterface)}},
    @{Name = 'MaximumNetworkInterfaces'; Expression = {($_.Networkinfo.MaximumNetworkInterfaces)}},
    InstanceType | `
Format-Table -AutoSize

The following is example output.

Ipv4AddressesPerInterface MaximumNetworkInterfaces InstanceType
------------------------- ------------------------ ------------
                       30                        8 c5.4xlarge
                       15                        4 c5.xlarge
                       30                        8 c5.12xlarge
                       50                       15 c5.24xlarge
                       30                        8 c5.9xlarge
                       50                       15 c5.metal
                       15                        4 c5.2xlarge
                       10                        3 c5.large
                       50                       15 c5.18xlarge