- ENI - network interface. can be attached detached etc.
- Addresses
- A primary private IPv4 adress from the IPv4 range of the VPC
- One ore more secondary IPv4 addresses from the VPC range
- One EIP per private IPv4 address
- One public IPv4 address
- One or more IPv6 addresses
- One or more SG
- A MAC address
- Scenarios
- Management network
- Use network and security appliances in your VPC
- Create dual homes instances with workloads.roles on distinct subnets
- Create a low budget high availability solution
- Addresses
- EN - enhanced networking
- Single root I/O virtualization (SR-IOV) - higher IOP performance and lower CPU utilization, compared to traditional ENI
- Good network performance
- Elastic Network Adapter (ENA) - up to 100Gbps
- Virtual Function (VF) interface - up to 10Gbps. Older instances. ENA preferred
- EFA - elastic fabric adapter. Can be attached to ec2 instances to allow high performance computing (HPC) / machine learning
- HPC & machine learning applications
- Providers lower and more consistent latency and higher throughput than the TCP transport traditionally used in cloud based HPC systems
- Can use OS-bypass - enables HPC and ML applications to bypass the OS kernel to communicate directly with the EFA device. It makes it a lot faster with a lot lower latency. Only linux