Network Load Balancing Manager Windows server 2016

Dhanuka Pathinayake 0 Reputation points
2023-02-09T00:59:51.81+00:00

Hi

We are already running a NLB cluster for production workload with 2 hosts and it's working fine. As the users experiencing some performance issues time to time, we are trying to add another member to the host. But when we are connecting the new host to the NLB cluster, new host will converge even though no traffic passing out, but existing 2 hosts will become "Pending" state. Also, notices that the NLB manager of the newly added host only displaying this server only (checked with 'Get-NLBClusterNode' PowerShell command as well). But other two hosts showing all the three members with this command and NLM Manager.

We are running this on VMWare platform and created the new host with the same template used to create previous hosts. It will be great full if anyone can let me know if there any step, I need to take to overcome this issue.

Thank you.

Dhanuka

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  1. Limitless Technology 43,941 Reputation points
    2023-02-09T15:24:51.3066667+00:00 
    Hi. Thank you for your question and reaching out. I’d be more than happy to help you with your query

This issue could be due to differences in the network configuration, operating system version, or firewall settings between the newly added host and the existing hosts in the NLB cluster.

Here are a few steps that might help resolve the issue:

    Verify that the network configuration of the newly added host is identical to the existing hosts in the NLB cluster, including IP addresses, subnets, and network adapter settings.

    Check that the operating system version and patches are up to date on the newly added host and are the same as those on the existing hosts.

    Verify that the firewall settings on the newly added host are not blocking any required network traffic. In particular, check the firewall rules for the network adapter that is connected to the NLB cluster.


    Check that the NLB service is running and configured correctly on the newly added host. You can run the following PowerShell command on the newly added host to verify its status:

Get-Service | Where-Object { $_.DisplayName -eq "Network Load Balancing" }


If the NLB service is running, you can try resetting the cluster configuration on the newly added host. You can do this by running the following PowerShell command:

Remove-NlbClusterNode -HostName <hostname> -Force


Then add the host back to the cluster using the following command:

Add-NlbClusterNode -HostName <hostname>


These steps should help you resolve the issue with the newly added host not converging properly in the NLB cluster.

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