Use Limits
Note the following when you use a peering connection:
- To enable real communication between both ends of a peering connection, you must configure routing rules in the route tables of both the sending and receiving ends.
- If the peer does not accept a peering connection request, the request will automatically expire after 7 days.
- Do not accept peering connection requests from unknown accounts because they may pose risks to your network.
- The VPC CIDR blocks on both ends of a peering connection cannot overlap. Otherwise, an error will occur.
- For a cross-region peering connection, the CIDR blocks of multiple peer networks of one VPC cannot overlap. Otherwise, an error will occur.
- Either end of a peering connection can interrupt the connection. Then, traffic between the two VPCs is disconnected immediately.
Resource Limitations
| Resource | Limitation | Description |
|---|---|---|
| The number of peering connections supported by each VPC | 10 | - |