Using NLB is very handy on several configurations ( but remember there is a lot of broadcast trafic ) so the nlb network should be in a different subnet than your own production network.
First add the feature in windows 2008 , start up the NLB mmc on the server.
In my care I have 3 nic , one production , two DHCP.
I did new cluster and the wizzard starts. I did pick the second nic.
The warning is I NEED a fixed IP !! so i put in a fix IP and added the cluster IP address
Most of the times You don’t need every port on the nic , for webservers it is only one or two ports. I my case I used the opsmgr webconsole basic port 51908.
Now One host is ready to go.
I went to my IIS 7 MMC
For changing the IP you do on the website edit bindings get the default. And Edit the settings.
As you can see the NLB cluster IP is there I did not config a second IP for the NLB . So I put in the NLB IP and now the website is listening on the NLB IP. AND NOT on the default IP from the server.
So If you want to add a second IP to the NLB go back to the NLB config an do edit on the cluster properties
as you can see the IIS config shows the second IP
This could be handy for large webfarms that uses hostheaders.
For Setting up the Second , thirth node just add the machine in the cluster Add host and settings are deployed to the other server.
Fixed IP is needed !!