May 2019
Intermediate to advanced
308 pages
8h 5m
English
Content preview from AWS Certified Advanced Networking - Specialty Exam Guide
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Limitations of VPC peering
When setting up a VPC peering connection, we need to be aware of the following limitations:
- It is not possible to peer VPC with overlapping IPv4 or IPv6 CIDR blocks.
- Transitive peering is not supported; for example, peering A to B and B to C does not establish a link between A and C.
- Unicast reverse path forwarding in VPC peering connections is not supported.
- Tagging a VPC peering connection is only applied in the account or region in which you create them.
Additionally, inter-region VPC peering connections have the following limitations:
- The peer VPC's security groups cannot be referenced in security groups that are created in the other VPC.
- DNS resolution of hostnames that have both public and private IPs will ...
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