Configuring Network Cards for NLB
Configuring the network cards on the NLB cluster nodes is the first step in building the cluster. Although these steps can be performed during cluster creation using the NLB Manager, the same result can be achieved by editing the TCP/IP properties of each of the cluster node’s network cards. Best practice for NLB cluster nodes running in Unicast mode is to have two network cards to allow host communication to occur on one network interface card (NIC) while cluster communication is isolated on the cluster NIC. Multiple NICs can also add greater flexibility when it comes to controlling traffic and managing network security.
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