Saturday, June 12, 2021

Elastic Network Interfaces

 ELASTIC NETWORK INTERFACES


  • Logical component in a VPC that represents a virtual network card



  • ENI has following attributes : 
    • Primary private IPv4 and one or more secondary IPv4
    • One elastic (IP) IPv4 per private IPv4
    • One public IP (IPv4)
    • One or more security groups
    • a MAC address



  • ENIs can be created independently and attached on the fly to EC2 instances during failover.



  • Bound to a specific AZ

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