NLB address not reachable from outside

Hi experts,
I experience the following problem - I have a Windows NLB cluster of 3 servers, however I'm not able to reach or ping the virtual address from the outside. I can ping it from any of the hosts included in the cluster, but not from the hosts
not being a part of a cluster - even in the same subnet.
Another thing worth mentioning is, that every single host is displaying only itself in the cluster. However if you want to add one more node which is not shown it says it is already a part of the cluster. If you then connect to another
node via NLB Manager it jumps under the same cluster name. So you can connect to all three of them one by one and then they show up but not after you initially load the NLB Manager. All the nodes are Converged and started, they are marked green. Any clues
on where to start troubleshooting?

Hi Dariusz Nowara,
“that every single host is displaying only itself in the cluster” this case show it is incorrect configuration when you create cluster, please refer the following related information
to correct them first.
Network Load Balancing cluster node does not successfully converge
https://support.microsoft.com/en-us/kb/812870/
The similar thread:
NLB Manager donot show the other host
https://social.technet.microsoft.com/Forums/windowsserver/en-US/9262c47a-cfe1-4696-9442-dd8d82651891/nlb-manager-donot-show-the-other-host?forum=winserverClustering
I’m glad to be of help to you!
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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