VPC Peering
VPC Peering is a fundamental networking concept in AWS that enables you to establish private connections between Virtual Private Clouds (VPCs).
What is VPC Peering?
VPC Peering allows you to connect VPCs in the same AWS region or different regions. It enables the routing of traffic between VPCs using private IP addresses, without the need for internet gateways or NAT devices.
Establishing a Peering Connection
To establish a peering connection, you need to have the appropriate permissions and configure the route tables of both VPCs involved in the peering.
DNS Resolution and DNS Hostnames
Once the peering connection is established, you can enable DNS resolution and DNS hostnames to allow hostname-based communication between the peered VPCs.
Transitive Peering
It's important to note that VPC peering is not transitive. This means that if VPC A is peered with VPC B, and VPC B is peered with VPC C, VPC A and VPC C are not directly peered.
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class Main {
public static void main(String[] args) {
// Replace with your Java logic here
System.out.println("VPC Peering allows you to connect VPCs in the same AWS region or different regions.");
System.out.println("With VPC peering, you can route traffic between VPCs using private IP addresses, without the need for internet gateways or NAT devices.");
System.out.println("VPC peering is a one-to-one relationship, meaning each peering connection is between two VPCs.");
System.out.println("To establish a peering connection, you need to have the appropriate permissions and configure the route tables of both VPCs.");
System.out.println("Once the peering connection is established, you can enable DNS resolution and DNS hostnames to allow hostname-based communication between the peered VPCs.");
System.out.println("Keep in mind that VPC peering is not transitive, meaning if VPC A is peered with VPC B, and VPC B is peered with VPC C, VPC A and VPC C are not directly peered.");
}
}