Install Failover IIS Cluster using Powershell

   Check installed rolles NLB and IIS

Get-WindowsFeatute -name NLB,web-server

  Install roles web server and nlb on 3 servers from 1 console:

Invoke-Command –ScriptBlock {Add-WindowsFeature –Name NLB, web-server,wb-asp-net,webapp-dev,Web-ISAPI-Filter -IncludeManagementTools} –Computername iis01,iis02,iis03

  Create Nlb Cluster:

New-NlbCluster –hostname iis03 –OperationMode Multicast –ClusterName nlb01 –InterfaceName ethernet0 –ClusterPrimaryip 192.168.128.50 –SubnetMask 255.255.255.0

  Show NLB cluster

Get-NLBcluster –hostname iis03

$NLB= Get-Nlbcluster –hostname iis03

  ADD nodes to NLB cluster :

Add-NlbClusterNode –InputObject $Nlb –NewNodeName iis01 –newNodeInterface Ethrnet0

Add-NlbClusterNode –InputObject $Nlb –NewNodeName iis02 –newNodeInterface Ethrnet0

  Open TCP 80 port on firewall :

Set-NlbClusterPortRule –HostName iis03 –NewStartport 80 –NewEndPort 80

  ADD Dns record for cluster name :

Add-DnsServerResourceRecordA –ZoneName corp.local –Name nlb01 –Ipv4address 192.168.128.50