Establishing a VPC (Virtual Private Cloud) peering connection between two instances in different regions on cloud platforms like Amazon Web Services (AWS) typically involves several steps. VPC peering allows you to connect two virtual networks in different regions, enabling private network communication between instances. Here's a high-level overview of the process
- Log in to your Cloud Console: Access your cloud provider's console (e.g., AWS Management Console for AWS).
- Create VPCs: In each region, create a VPC if you haven't already. Ensure that the VPCs have non-overlapping IP address ranges, as overlapping IP ranges will lead to routing conflicts.
- Modify Route Tables: In each VPC, you'll need to update the route tables to direct traffic to the VPC peering connection. You should add a route for the remote VPC's IP range, pointing to the peering connection. Here's how you can do it in AWS: a) Navigate to the VPC dashboard.b) Select the VPC, go to the "Route Tables" section.c) Edit the main route table associated with your subnets and add a route pointing to the other VPC's CIDR block via the VPC peering connection.
- Create VPC Peering Connection: In your cloud provider's console, you will find an option to create a VPC peering connection. You'll need to specify the target VPC (in the other region) and the requester VPC (in your region).
- Accept the Peering Connection: The owner of the target VPC (in the other region) will receive a peering request. They need to accept it for the connection to be established.
- Update Security Group Rules :If your instances have security groups applied, you may need to update the inbound and outbound rules to allow traffic from the peered VPC
- You definitely need to update VPC Range of IP Address in each Instance Security Group
- Test Connectivity: After the peering connection is established, you should be able to communicate between instances in the two VPCs as if they were on the same network. You can ping, SSH, or perform any other network-based tests.
- VPC peering is a region-specific feature, meaning you cannot establish peering connections between VPCs in different cloud regions.
- If you need to connect instances across regions, you may need to consider other solutions like VPNs, Direct Connect (in AWS), or inter-region VPC peering solutions if they are available on your cloud provider's platform. These solutions might have different setup procedures.
- Always refer to the official documentation and consider the specific requirements and constraints of your cloud provider when setting up VPC peering connections.
- VPC Peering don’t support transit way and make sure that no ip-address overlapping
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