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Checking NSX component communication

To check the communication channel between NSX Manager, NSX controller cluster, control plane agent, and Distributed Firewall agent, follow the following procedure:

In the vCenter Web Client, navigate to Networking & Security | Installation | Host Preparation
Select your vSphere cluster or an ESXi host

Click on the Actions button and navigate to | Communication Channel Health:

The following screenshot displays the result of the preceding action and the ESXi communication health:

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