Symptoms:
Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.
VMware vCloud Director Availability 4.x.x
This issue occurs when the source vCloud Availability On-Premises appliance or vCloud Availability Tunnel appliance, depending on the type of source site, is unable to communicate with the vCloud Availability Tunnel appliance in the destination cloud site.
To resolve this issue:
Use the curl command to verify the connectivity between the appliances.
Example: For the network Communication to complete we need the ESXi host and the VMware Cloud Director Availability On-Premises Appliance to communicate over the port 44046/TCP.
Port 44046/TCP
is used for transferring replication data traffic from the ESXi hosts to the VMware Cloud Director Availability On-Premises Appliance. We can use the curl command from the esxi host to on prem : curl -kv https://ON-PREM_FQDN_or IP:44046
For more information on port requirements in cloud deployments, please refer to the "Network Architecture" section and ensure that the necessary ports are enabled in VMware vCloud Availability.
For detailed information on VMware ports and protocols for vCDA in cloud environments, please consult the following document: VMware Ports and Protocols for vCDA Cloud.
For on-premises deployments, check the "Network Architecture" section for your on-premises setup and ensure that the required ports are enabled accordingly. Refer to the following document for information on ports for vCDA on-premises appliances: VMware Ports and Protocols.