troubleshooting Question

NIC connectivity after being added to Network Load Balance

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rutalietFlag for United States of America asked on
NetworkingActive DirectoryMicrosoft Server OSHyper-VWindows Server 2012
7 Comments1 Solution150 ViewsLast Modified:
Hello everyone, I am hoping someone might be able to help with an odd NLB issue we seem to be experiencing on our ADFS farm setup. This environment has been setup for at least a year and this issue could have been going on for a while without being noticed. Both servers are Hyper-V guests with two network cards attached and MAC Spoofing enabled on the second NIC (Cluster Operation Mode Unicast). The issue that we are having is that we are able to add ADFS-1 to the cluster with no issues, however when we add AFDS-2 into the cluster the Network Location Awareness (NLA) changes from Domain Network to Public Network (Images below). No errors are displayed as it joins the cluster, but the NLB NIC is no longer reachable on the network.

ADFS-1
Host NIC: x.x.x.33
NLB NIC: x.x.x.151
NLB VIP: x.x.x.150

ADFS-2
Host NIC: x.x.x.10
NLB NIC: x.x.x.152 (Unreachable after Joining to cluster)
NLB VIP: x.x.x.150

Before NLB Join
After NLB Join
I have already verified the IP configurations before and after the addition to the cluster and restarted NLA, and nothing has changed. When you drop the NIC from the cluster it returns to its normal state of Domain Network. I have also deleted the cluster completely and rejoin the servers in a different order but the same server/same NIC does the exact same thing. Anybody Expert ideas on where to go next?
ASKER CERTIFIED SOLUTION
rutaliet

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