Windows NLB

https://technet.microsoft.com/en-us/library/cc786003(v=ws.10).aspx

https://blogs.msdn.microsoft.com/clustering/2009/10/20/network-load-balancing-in-r2-extended-affinity/

How Network Load Balancing Technology Works

https://msdn.microsoft.com/zh-cn/library/cc756878(v=ws.10).aspx

Network Load Balancing parameters

https://technet.microsoft.com/en-us/library/cc778263(WS.10).aspx