This post investigates the network performance of AWS R4 instances with a focus on the "Up to 10 Gigabit" networking expected from smaller (r4.large - r4.4xlarge) instance types. Before starting it should be noted that this post is based on observation and as such is prone to imprecision and variance, it is intended as a guide for what can be expected and not a comprehensive or scientific review.
![Understanding EC2 "Up to 10 Gigabit" network performance for R4 instances](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d792c97050b6fb87156bd78771108696c2baf9/height=288;version=1;width=512/https%3A%2F%2F2.bp.blogspot.com%2F-IP4hWalxMes%2FWZlNn-W0-pI%2FAAAAAAAAINw%2FMb6PXZ06C9wmi94Q4BqkU4JRg7aa-n9XQCLcBGAs%2Fw1200-h630-p-k-no-nu%2Fr4base.png)