OCI Networking: implementing VCN Peering and Security Lists for Private Subnet Access
I've been banging my head against this for hours. I'm currently working with a scenario with Oracle Cloud Infrastructure (OCI) where I need to allow resources in a private subnet of one Virtual Cloud Network (VCN) to communicate with another private subnet in a peered VCN. Despite setting up the VCN peering and updating the security lists, I'm still unable to establish connectivity. I've created two VCNs, 'VCN-A' and 'VCN-B', with the following CIDR blocks: VCN-A with `10.0.0.0/16` and VCN-B with `10.1.0.0/16`. In VCN-A, I've added a security list rule to allow ingress traffic from VCN-B's CIDR block: ```json { "ingressSecurityRules": [ { "protocol": "6", "source": "10.1.0.0/16", "statements": [ { "source":"10.1.0.0/16", "ipProtocol":"6", "tcpOptions":{ "destinationPortRange":"1-65535" } } ] } ] } ``` In VCN-B, I've similarly set up a rule to allow ingress from VCN-A. I also confirmed the peering connection is active and both VCNs are in the same region. However, when I try to ping an instance in VCN-B from an instance in VCN-A, I receive a timeout behavior: ``` Request timed out. ``` I also ensured that the route tables for both VCNs have the appropriate routes to direct traffic to each other. I've verified that Network Security Groups (NSGs) are not interfering, as they have been disabled for testing purposes. Is there something I'm missing in the configuration or any additional steps I should take to troubleshoot this scenario? Any insights would be appreciated! This issue appeared after updating to Json stable. Thanks, I really appreciate it!