The Description tab provides an overall summary description of how the subnet is configured:
The main points to highlight at this stage are VPC, Availability Zone, Network ACL, IPv4 CIDR, and Route Table:
- VPC: When a subnet is created, it will exist within a single VPC. In this example, we can see the associated VPC ID and its name, Logging.
- Availability Zone: As mentioned previously, a subnet can only reside in a single Availability Zone; in this instance, it is located in the eu-west-1b Availability Zone.
- Network ACL: An NACL will always be associated with a subnet. If you don't specify a particular NACL on creation, then it will use the VPC default NACL. As shown, the NACL will also have a corresponding ID, acl-2827394e.
- IPv4 CIDR:Â The IPv4 CIDR value shows the current CIDR block for this subnet.
- Route Table:Â Finally, Route Table shows the associated route table that this subnet will use to route...
