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Network interface basics. You can create a network interface, attach it to an instance, detach it from an instance, and attach it to another instance. The attributes of a network interface follow it as it's attached or detached from an instance and reattached to another instance.
Jul 31, 2020 · Essentially, ENIs are virtual network cards you can attach to your EC2 instances. They are used to enable network connectivity for your instances, and having more than one of them connected to your instance allows it to communicate on two different subnets.
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.
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.
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.
Lambda creates a Hyperplane ENI when you define a unique subnet plus security group combination for a VPC-enabled function in an account. Lambda reuses the Hyperplane ENI for other VPC-enabled functions in your account that use the same subnet and security group combination.
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.
Apr 3, 2024 · AWS ENI, short for Elastic Network Interface, is a virtual network interface that you can attach to an Amazon EC2 instance in your AWS environment. It acts as a gateway between your EC2 instance and the rest of your AWS infrastructure, providing a secure and reliable way for your instances to communicate with each other and the outside world.
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.
