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An elastic network interface is a logical networking component in a VPC that represents a virtual network card. It can include the following attributes: A primary private IPv4 address from the IPv4 address range of your VPC. A primary IPv6 address from the IPv6 address range of your VPC.
Dec 21, 2011 · Today we are adding additional flexibility to EC2 instances running in the Virtual Private Cloud. First, we are teasing apart the IP addresses (and important attributes associated with them) from the EC2 instances and calling the resulting entity an ENI, or Elastic Network Interface.
Decoupling the ENI from the EC2 instance allows you far more flexibility. You can connect several ENIs to the same EC2 instance and be attached to different subnets, for example: ENI A connected to a public-facing subnet. ENI B connected to an internal private subnet.
Mar 9, 2023 · AWS ENI separates the network interface from their instances and removes the tight coupling of instances with their subnets. This modularization helps developers to improve various aspects of their instances and services like robustness, resilience, and security.
Amazon ECS supports launching container instances with increased ENI density using supported Amazon EC2 instance types. When you use these instance types and enable the awsvpcTrunking account setting, additional ENIs are available on newly launched container instances.
You can launch an EC2 instance in one VPC and attach a secondary ENI from another VPC (but in the same Availability Zone) to the instance. This enables you to create multi-homed instances across VPCs with different networking and security configurations.
Apr 17, 2020 · A single EC2 instance can be attached to two ENIs, each one on a distinct subnet. The ENI (not the instance) is now associated with a subnet. This enable two powerful use cases: Assuming we have created two EC2 instances (Instance-A and Instance-B), an ENI and a public EIP. The EIP is attached to the ENI and the ENI is attached to instance-A.
Oct 26, 2023 · AWS announces the general availability of multi-Virtual Private Cloud (VPC) elastic network interface (ENI) attachments for Amazon Elastic Compute Cloud (EC2) instances. With this capability, customers can now launch an instance with a primary ENI in one VPC and attach a secondary ENI from another VPC.
Feb 7, 2024 · Elastic Network Interface (ENI) in AWS is a virtual network interface that can be attached to EC2 instances, offering a range of features suitable for various networking needs. Technically, ENIs provide a primary private IPv4 address, one or more secondary private IPv4 addresses, an Elastic IP address (if assigned), and a public IP address (if ...
Jan 21, 2024 · In the virtual world of AWS, the Elastic Network Interface (ENI) is akin to a virtual network card. It's a logical networking component in a Virtual Private Cloud (VPC) that represents how our instances (virtual servers) connect to the network.
