Hi Hal,
Thanks for the help on this.
I am running between two servers with the following:
ntttcp.exe -r -a 16 -t 15 -m 16,*,10.1.4.11
ntttcp.exe -s -a 16 -t 15 -m 16,*,10.1.4.11
Which two servers does not seem to make a difference (all three are identical anyway). PortXmitWait increases quite a bit on the send side of things (both node and switch ports) when running these tests.