NLB is always a challenge. When it doesn’t work, you have to figure out if its a problem with the NIC driver, a problem with the switches the NICs are connected to, or something else that you might never think about if it weren’t for NLB.
In this article Meibo Zhang describes a scenario where getting into the advanced configuration interface of the NIC seemed to fix the problem.
Check out Meibo’s article at:
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)