VPC Peering

VPC Peering

ℹ️ Information: VPC Peering allows you to connect two VPCs, enabling them to communicate as if they were in the same network. This section guides you through creating and configuring a VPC Peering connection.

💡 Pro Tip: VPC Peering connections are not transitive. If VPC A is peered with VPC B, and VPC B is peered with VPC C, VPC A cannot communicate with VPC C through VPC B.

Implementation Steps

  1. Access VPC Management Console
    • Select Peering Connections from the left sidebar
    • Click Create Peering Connection

Create Peering Connection

  1. Configure Peering Connection
    • Enter a name tag (e.g., My-VPC-to-HG-VPC)
    • Select My VPC as the Requester VPC
    • Select HG VPC as the Accepter VPC
    • Click Create Peering Connection

Configure Peering Connection

  1. Accept Peering Connection
    • Select the newly created peering connection
    • Click Actions and select Accept Request
    • Confirm the acceptance

Accept Peering Connection

  1. Verify Peering Connection
    • The status should change to Active
    • Both VPCs should now be able to communicate

Verify Peering Connection

  1. Test Connection
    • From an EC2 instance in My VPC, attempt to ping an EC2 instance in HG VPC
    • The ping should succeed, indicating successful VPC Peering

Test Peering Connection

🔒 Security Note: Ensure that security groups and network ACLs are properly configured to allow traffic between the peered VPCs.

⚠️ Warning: VPC Peering connections cannot be created between VPCs with overlapping CIDR blocks. Ensure your VPCs have unique CIDR ranges.

💡 Pro Tip: Use descriptive names for your VPC Peering connections to easily identify their purpose and associated VPCs.