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Windows Network Load Balancing issue

    Question

  • I am setting up an NLB cluster on the network and are experiencing the following issue.

    This a 2 hosts cluster setup. Both servers are running Windows 2016. Each node has 2 NICs attached.

    I enabled NLB on the first node and created the NLB cluster using unicast. The configuration was error free. However, once the cluster was configured (without adding the 2nd node to it yet), the node lost its network connection. I checked the IP configuration and did see that the cluster VIP is added to the NIC. The other issue is I didn't see the virtual MAC address (starts with 02:BF) assigned to the NIC. I can only see the original MAC for the NIC and NLB interfaces.

    I could not add the 2nd node to the cluster based on the issues above. Any idea?

    Thanks

    Monday, June 11, 2018 4:15 PM

All replies

  • By the way, the status of the cluster is converged. No obvious error from NLB in event viewer.
    Monday, June 11, 2018 10:50 PM
  • Hi,

    I am currently performing research on this issue and will get back to you as soon as possible. I appreciate your patience.

    If you have any updates during this process, please feel free to let me know.

    Best regards,

    Michael


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    Tuesday, June 12, 2018 3:56 PM
  • Thanks,

    Things that I tried but not working are.

    Disabled the Windows firewall.

    Disabled all network protocol except IPV4.

    The interesting part is the unicast MAC address is not assigned to the cluster interface even the status of the cluster shown as converged and the host status is enabled.

    Tuesday, June 12, 2018 9:10 PM