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connecting-vpcs-with-peering

Establishes VPC peering connections with route table updates, DNS configuration, and security group guidance.

Updated Jul 21, 2026
Search Tags:#aws#networking#cloud infrastructure#cross-account#vpc peering#dns resolution#route tables
One-click install
npx skills add https://github.com/richardnroman/Synthetic-Data-Exchange-Licensing-Platform --skill connecting-vpcs-with-peering-richardnroman
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: connecting-vpcs-with-peering
Source: https://github.com/richardnroman/Synthetic-Data-Exchange-Licensing-Platform/tree/main/.agents/skills/connecting-vpcs-with-peering
Command: npx skills add https://github.com/richardnroman/Synthetic-Data-Exchange-Licensing-Platform --skill connecting-vpcs-with-peering-richardnroman

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve? Connecting two VPCs privately requires many error-prone manual steps: creating and accepting the peering connection, checking CIDR overlap, updating every route table in both VPCs, enabling DNS resolution, and adjusting security groups. This Skill automates that full lifecycle so cross-VPC connectivity is configured correctly the first time. ## Core Features & Use Cases - End-to-End Peering Setup: Creates and accepts VPC peering connections, with support for same-region, cross-region, and cross-account scenarios. - Route and DNS Automation: Validates CIDR overlap, updates all route tables in both VPCs, and configures DNS resolution and hostnames on the peering connection. - Troubleshooting Guidance: Diagnoses common failures such as peering stuck in pending state, route conflicts, and DNS resolution issues. - Use Case: A platform engineer needs to connect a production VPC in us-east-1 with an analytics VPC in us-west-2. The Skill validates both VPCs, creates the peering, updates four route tables, enables DNS, and outputs security group recommendations. ## Quick Start Set up a VPC peering connection between vpc-12345678 in us-east-1 and vpc-87654321 in us-west-2 with DNS resolution enabled.

Frequently Asked Questions about connecting-vpcs-with-peering

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a VPC peering connection between two VPCs?▼

Provide the requester and accepter VPC IDs, then the procedure validates both VPCs exist, checks for CIDR overlap, creates the peering with aws ec2 create-vpc-peering-connection, accepts it, updates all route tables, and configures DNS resolution.

How to set up cross-region VPC peering in AWS?▼

Specify different requester_region and accepter_region parameters. The procedure creates the peering across regions, switches regions when accepting and configuring DNS, and adds routes in both regions so traffic flows correctly.

Can VPC peering work with overlapping CIDR blocks?▼

No, VPC peering does not work properly when CIDR blocks overlap because routing becomes ambiguous. The procedure checks for overlap and warns you; consider VPC sharing or Transit Gateway as alternatives.

Why is my VPC peering connection stuck in pending-acceptance state?▼

Cross-account peering connections require manual acceptance from the accepter account and cannot be auto-accepted. Same-account connections with auto_accept enabled transition to active automatically.

Why is DNS resolution not working across my VPC peering connection?▼

Both VPCs must have DNS resolution and DNS hostnames enabled in their VPC settings, not just on the peering connection options. Verify these attributes are enabled on each VPC and that peering DNS options are configured for both sides.

When should I use Transit Gateway instead of VPC peering?▼

Use Transit Gateway when you have overlapping CIDR blocks or need to connect many VPCs in a hub-and-spoke topology. VPC peering is best for direct one-to-one connections between two non-overlapping VPCs.

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