Installing the ENA Driver

Note: This cannot be enabled on T2 Instances

Most times when you increase or change the instance type of a server, the adapter changes and this can cause issues for you.

Here are steps for installing the ENA Driver:

  1. Install the driver for the operating system from this link. http://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/enhanced-networking-ena.htmlLocate the Operating system relevant to you and right by selecting copy link address
  2. Copy this to the browser of the Instance, where you wish to install the adapter
    This will automatically download the zip file containing the ENA network adapter
  1. Open the command prompt (CLI)
    and navigate to the folder containing the path and run d command in redRun pnputil -i -a ena.inf

4. Now stop the instance by shutting it down

5. Enable ENA support on the instance, run this command below
Note: (This step has to be done from your local computer) on on the instance

6. Open the command prompt (CLI)
Type in aws configure and follow the prompt (instruction) and enter your keys

Modifying the instance Attribute (AWS-CLI)
aws ec2 modify-instance-attribute –instance-id
instance_id –ena-support

And to describe the instance (AWS CLI)

aws ec2 describe-instances –instance-ids instance_id –query “Reservations[].Instances[].EnaSupport”

i.e,
aws ec2 modify-instance-attribute –instance-id i-0fxxxxxx82 –ena-support
aws ec2 describe-instances –instance-ids i-0fxxxxxx682 –query “Reservations[].Instances[].EnaSupport”

 

 



Note: At the moment the steps has changed used by AWS but the syntax still remains the same
Now you have to download, navigate to the folder and run the install.ps.

And follow the steps above again