1. Platform Preparation and Installation Guide
  2. Public Cloud Platforms
  3. Create and Deploy SBC Instances on EC2
  4. Prerequisites to EC2 Deployment

Prerequisites to EC2 Deployment

Prerequisites to this deployment procedure include :
  • You have identified and are deploying to the correct AWS Region. This is typically a default component of your EC2 Account.
  • You have identified and are deploying to the correct AWS Availability Zone. By deploying 2 (HA) instances during deployment at the same time, you are ensuring that both instances reside in the same Availability Zone.
  • An Amazon Virtual Private Cloud (VPC) is configured.
  • A security policy is configured.
  • You have determined the number of management and media interfaces you want for each instance.
  • All subnets are configured. Each SBC management and media interface requires its own unique subnet.

When deploying within an AWS VPC, AWS provides a predefined DNS Server IP. This means that you must use caution when determining your service networks. AWS predetermines this address as the VPC CIDR range +2.

For example, if AWS provides you with a VPC CIDR Range of 10.8.0.0/16, it also provides the DNS IP as 10.8.0.2 using DHCP. If you have configured any media or HA subnet such that it overlaps this network, such as 10.8.0.0/22, the SBC sends DNS requests out that interface, which eventually fail.

Your EC2 workspace may present dialogs and fields that differ from this procedure. For full information on deploying EC2 instances, see the Amazon EC2 documentation.