I am setting up network load balancing on two Windows 2008 64bit VMs. They both have two NICs. I have set it up ok and can see a test default.htm. If I disable the NIC on one then it goes to the other and visa versa. This is all great.
My problem is when I bring the disabled machine back on line (by re-enabling the NIC in this test) it seems to make both the nodes unavailble for at least 15 minutes. Is this normal behaviour? It fails over really quickly so I don't understand why bringing the disabled machine back up again causes the NLB to stop working for so long.