Test whether enhanced networking is enabled - Amazon Elastic Compute Cloud

Test whether enhanced networking is enabled

You can test whether enhanced networking is enabled in your instances or your AMIs.

Instance attribute

Check the value of the enaSupport instance attribute.

AWS CLI

Use the describe-instances command.

aws ec2 describe-instances \
    --instance-ids i-1234567890abcdef0 \
    --query "Reservations[].Instances[].EnaSupport"

If enhanced networking is enabled, the output is as follows.

[
    true
]
PowerShell

Use the Get-EC2Instance cmdlet.

(Get-EC2Instance -InstanceId i-1234567890abcdef0).Instances.EnaSupport

If enhanced networking is enabled, the output is as follows.

True
Image attribute

Check the value of the enaSupport image attribute.

AWS CLI

Use the describe-images command.

aws ec2 describe-images \
    --image-id ami-0abcdef1234567890 \
    --query "Images[].EnaSupport"

If enhanced networking is enabled, the output is as follows.

[
    true
]
PowerShell

Use the Get-EC2Image cmdlet.

(Get-EC2Image -ImageId ami-0abcdef1234567890).EnaSupport

If enhanced networking is enabled, the output is as follows.

True
Linux network interface driver

Use the following command to verify that the ena kernel driver is being used on a particular interface, substituting the interface name that you want to check. If you are using a single interface (default), this is eth0. If your Linux distribution supports predictable network names, this could be a name like ens5. For more information, expand the section for RHEL, SUSE, and CentOS in Enable enhanced networking on your instance.

In the following example, the ena kernel driver is not loaded, because the listed driver is vif.

[ec2-user ~]$ ethtool -i eth0
driver: vif
version:
firmware-version:
bus-info: vif-0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

In this example, the ena kernel driver is loaded and at the minimum recommended version. This instance has enhanced networking properly configured.

[ec2-user ~]$ ethtool -i eth0
driver: ena
version: 1.5.0g
firmware-version:
expansion-rom-version:
bus-info: 0000:00:05.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no