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I need three network interfaces in one instance for my work.By default there is one eth0 but I want to add eth1 and eth2 in an instance.

I created network interfaces using the same security rule that I used to create the EC2 instance in zone us-west-2a and my instance is also in this zone us-wes-2a

My instance type is t2.micro

now i choose the instance options and choosing the instance where i want to add ,then from actions ->networking->attach network interface gives this error

No available network interfaces were found for this VPC or availability zone

Could someone guide me to resolve this issue? thanks a lot.

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  • t2.micro only supports a total of 2 ENIs (eth0 and eth1), with a maximum of 2 IP addresses per ENI. Larger instances are required, if you need more than this. When you created new the ENI, you needed to create it on a subnet that is in the same VPC and same availability zone as the primary interface in the instance. Verify that? Commented Apr 8, 2016 at 3:24
  • I am gonna move to a large instance since I need at least 3 network interface in each machine for my work . Thanks for your reply Commented Apr 8, 2016 at 15:19

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I created network interfaces using the same security rule that I used to create the EC2 instance in zone us-west-2a and my instance is also in this zone us-wes-2a

I think you created a security group, from the main EC2 dashboard, select Network and Security > Network Interfaces > Create network Interface.

make sure you are in the same zone as the instance you whsh to attach it to

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  • yes i first created the network interface as u said in the same zone but I put secondary Private IP to that interface too.When I created the network interface I choose the existing security group(this security group I created after launching the instance).then I choose instance and networking and attach to the network interface but it shows the same error. Commented Apr 7, 2016 at 14:01

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