ESXi 6.5 Host Disconnects from vCenter Server

Greetings, Dev! In this article, we will talk about ESXi 6.5 host disconnects from vCenter server. This issue can be frustrating and time-consuming, but we are here to help you resolve it. We will go through the possible causes and solutions for this problem step-by-step. So let’s dive in and learn how to fix ESXi 6.5 host disconnects from vCenter server.

Causes of ESXi 6.5 Host Disconnects from vCenter Server

Before we go into the solutions, we need to know the possible causes of ESXi 6.5 host disconnects from vCenter server. The following are some of the common reasons why ESXi 6.5 host disconnects from vCenter server:

Now that we know the possible causes, let’s proceed to the solutions.

Solutions for ESXi 6.5 Host Disconnects from vCenter Server

1. Check Network Connection

The first thing you need to do is to check the network connection between the host and vCenter server. A weak or unstable network connection can cause ESXi 6.5 host to disconnect from vCenter server. To check the network connection, follow these steps:

Step 1: Log in to vCenter server.

Step 2: Select the host that is disconnected.

Step 3: Click the Networking tab.

Step 4: Check the network adapter settings.

Step 5: Verify that the network adapter is connected to the correct network.

Step 6: Check the network speed and duplex settings.

Step 7: Check the physical network connection.

2. Verify Host Configuration

The next thing you need to do is to verify the host configuration. Incorrect or incomplete host configuration can cause ESXi 6.5 host to disconnect from vCenter server. To verify the host configuration, follow these steps:

Step 1: Log in to vSphere Client.

Step 2: Select the host that is disconnected.

Step 3: Click the Configuration tab.

Step 4: Check the host networking settings.

Step 5: Verify that the host IP address is correct.

Step 6: Ensure that the DNS and routing settings are correct.

Step 7: Check the host firewall settings.

3. Troubleshoot vCenter Server Issues

If the above steps did not resolve the issue, it may be due to vCenter Server issues. Issues with vCenter Server can cause ESXi 6.5 host to disconnect from vCenter server. To troubleshoot vCenter Server issues, follow these steps:

Step 1: Check for vCenter Server updates and apply them.

Step 2: Restart the vCenter Server service.

Step 3: Verify that the vpxa service is running on the host.

Step 4: Check the vCenter Server logs for any errors.

Step 5: Contact VMware Support for further assistance.

FAQ

Q1. Can a weak network connection cause ESXi 6.5 host to disconnect from vCenter server?

Yes, a weak or unstable network connection can cause ESXi 6.5 host to disconnect from vCenter server.

Q2. How can I verify the host configuration?

You can verify the host configuration by logging in to vSphere Client, selecting the host that is disconnected, clicking the Configuration tab, and checking the host networking settings, IP address, DNS and routing settings, and firewall settings.

Q3. What should I do if the issue persists after trying all the solutions?

If the issue persists after trying all the solutions, it may be due to vCenter Server issues. Contact VMware Support for further assistance.

We hope this article has helped you resolve the ESXi 6.5 host disconnects from vCenter server issue. If you have any questions or comments, please feel free to leave them below.