I am running iperf tcp throughput test between multiple windows 2012 servers (in a mesh) connected via a switch and I noticed wreddrops on my switch. I am wondering if you can let me know how to setup the dc-tcp settings on the window server. Currently I have enabled ECN on the windows server as show below. Any help in providing suggestions on how to avoid the drops would be greatly appreciated.

PS C:\Users\Administrator> netsh interface tcp show global
Querying active state...

TCP Global Parameters
Receive-Side Scaling State : enabled
Chimney Offload State : disabled
NetDMA State : disabled
Direct Cache Access (DCA) : disabled
Receive Window Auto-Tuning Level : normal
Add-On Congestion Control Provider : none
ECN Capability : enabled
RFC 1323 Timestamps : disabled
Initial RTO : 3000
Receive Segment Coalescing State : enabled
Non Sack Rtt Resiliency : disabled
Max SYN Retransmissions : 2

PS C:\Users\Administrator>