iperf tests with default window size to stargrid03.rcf.bnl.gov,
stargrid04.rhic.bnl.gov from pc1632.nersc.gov.  Single thread.

Summary:
stargrid03:  ~820 kB/s
stargrid04:  4.2 MB/s

pc1632 71% iperf -c stargrid03.rhic.bnl.gov -t 1000 -i 10 -p 21000 -P 1
------------------------------------------------------------
Client connecting to stargrid03.rhic.bnl.gov, TCP port 21000
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[  5] local 128.55.37.112 port 36093 connected with 130.199.80.176 port 21000
[  5]  0.0-10.0 sec  7.20 MBytes  6.04 Mbits/sec
[  5] 10.0-20.0 sec  8.21 MBytes  6.89 Mbits/sec
[  5] 20.0-30.0 sec  8.26 MBytes  6.93 Mbits/sec
[  5] 30.0-40.0 sec  8.19 MBytes  6.87 Mbits/sec
[  5] 40.0-50.0 sec  8.24 MBytes  6.91 Mbits/sec
[  5] 50.0-60.0 sec  8.23 MBytes  6.91 Mbits/sec
[  5] 60.0-70.0 sec  8.26 MBytes  6.93 Mbits/sec
[  5] 70.0-80.0 sec  8.23 MBytes  6.91 Mbits/sec
[  5] 80.0-90.0 sec  8.18 MBytes  6.86 Mbits/sec
[  5] 90.0-100.0 sec  8.27 MBytes  6.93 Mbits/sec
[  5] 100.0-110.0 sec  8.23 MBytes  6.90 Mbits/sec
[  5] 110.0-120.0 sec  8.21 MBytes  6.89 Mbits/sec
[  5] 120.0-130.0 sec  7.34 MBytes  6.16 Mbits/sec


pc1632 70% iperf -c stargrid04.rhic.bnl.gov -t 1000 -i 10 -p 21000 -P 1
------------------------------------------------------------
Client connecting to stargrid04.rhic.bnl.gov, TCP port 21000
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[  5] local 128.55.37.112 port 35963 connected with 130.199.80.179 port 21000
[  5]  0.0-10.0 sec  11.6 MBytes  9.71 Mbits/sec
[  5] 10.0-20.0 sec  25.3 MBytes  21.2 Mbits/sec
[  5] 20.0-30.0 sec  38.5 MBytes  32.3 Mbits/sec
[  5] 30.0-40.0 sec  33.0 MBytes  27.7 Mbits/sec
[  5] 40.0-50.0 sec  41.3 MBytes  34.7 Mbits/sec
[  5] 50.0-60.0 sec  54.9 MBytes  46.1 Mbits/sec
[  5] 60.0-70.0 sec  47.4 MBytes  39.7 Mbits/sec
[  5] 70.0-80.0 sec  11.0 MBytes  9.24 Mbits/sec
[  5] 80.0-90.0 sec  14.6 MBytes  12.3 Mbits/sec
[  5] 90.0-100.0 sec  15.5 MBytes  13.0 Mbits/sec
[  5] 100.0-110.0 sec  23.4 MBytes  19.6 Mbits/sec
[  5] 110.0-120.0 sec  36.9 MBytes  30.9 Mbits/sec
[  5] 120.0-130.0 sec  50.2 MBytes  42.1 Mbits/sec
[  5] 130.0-140.0 sec  63.9 MBytes  53.6 Mbits/sec
[  5] 140.0-150.0 sec  48.3 MBytes  40.6 Mbits/sec
[  5] 150.0-160.0 sec  44.1 MBytes  37.0 Mbits/sec
[  5] 160.0-170.0 sec  39.0 MBytes  32.7 Mbits/sec
[  5] 170.0-180.0 sec  36.7 MBytes  30.8 Mbits/sec
[  5] 180.0-190.0 sec  10.8 MBytes  9.05 Mbits/sec
[  5] 190.0-200.0 sec  12.8 MBytes  10.7 Mbits/sec
[  5] 200.0-210.0 sec  19.2 MBytes  16.1 Mbits/sec
[  5] 210.0-220.0 sec  33.0 MBytes  27.7 Mbits/sec
[  5] 220.0-230.0 sec  46.1 MBytes  38.7 Mbits/sec
[  5] 230.0-240.0 sec  59.6 MBytes  50.0 Mbits/sec
[  5] 240.0-250.0 sec  28.2 MBytes  23.7 Mbits/sec
[  5] 250.0-260.0 sec  26.6 MBytes  22.3 Mbits/sec
[  5] 260.0-270.0 sec  39.5 MBytes  33.1 Mbits/sec
[  5] 270.0-280.0 sec  52.5 MBytes  44.0 Mbits/sec
[  5] 280.0-290.0 sec  56.0 MBytes  47.0 Mbits/sec
[  5] 290.0-300.0 sec  44.6 MBytes  37.4 Mbits/sec
[  5] 300.0-310.0 sec  54.9 MBytes  46.1 Mbits/sec
[  5] 310.0-320.0 sec  18.7 MBytes  15.7 Mbits/sec
[  5] 320.0-330.0 sec  24.7 MBytes  20.7 Mbits/sec
[  5] 330.0-340.0 sec  25.7 MBytes  21.5 Mbits/sec
[  5] 340.0-350.0 sec  38.9 MBytes  32.6 Mbits/sec
[  5] 350.0-360.0 sec  28.8 MBytes  24.1 Mbits/sec
[  5] 360.0-370.0 sec  34.6 MBytes  29.0 Mbits/sec
[  5] 370.0-380.0 sec  8.71 MBytes  7.31 Mbits/sec
[  5] 380.0-390.0 sec  19.7 MBytes  16.6 Mbits/sec
[  5] 390.0-400.0 sec  21.6 MBytes  18.1 Mbits/sec
[  5] 400.0-410.0 sec  35.3 MBytes  29.6 Mbits/sec
[  5] 410.0-420.0 sec  48.7 MBytes  40.8 Mbits/sec
[  5] 420.0-430.0 sec  41.5 MBytes  34.8 Mbits/sec
[  5] 430.0-440.0 sec  39.2 MBytes  32.9 Mbits/sec
[  5] 440.0-450.0 sec  19.4 MBytes  16.3 Mbits/sec
[  5] 450.0-460.0 sec  32.4 MBytes  27.2 Mbits/sec
[  5] 460.0-470.0 sec  18.5 MBytes  15.5 Mbits/sec
[  5] 470.0-480.0 sec  16.4 MBytes  13.7 Mbits/sec
[  5] 480.0-490.0 sec  27.6 MBytes  23.1 Mbits/sec
[  5] 490.0-500.0 sec  40.9 MBytes  34.3 Mbits/sec
[  5] 500.0-510.0 sec  54.5 MBytes  45.7 Mbits/sec
[  5] 510.0-520.0 sec  28.1 MBytes  23.5 Mbits/sec
[  5] 520.0-530.0 sec  17.6 MBytes  14.7 Mbits/sec
[  5] 530.0-540.0 sec  31.0 MBytes  26.0 Mbits/sec
[  5] 540.0-550.0 sec  38.1 MBytes  32.0 Mbits/sec
[  5] 550.0-560.0 sec  30.9 MBytes  25.9 Mbits/sec
[  5] 560.0-570.0 sec  44.6 MBytes  37.4 Mbits/sec
[  5] 570.0-580.0 sec  37.4 MBytes  31.4 Mbits/sec
[  5] 580.0-590.0 sec  43.9 MBytes  36.8 Mbits/sec
[  5] 590.0-600.0 sec  44.2 MBytes  37.1 Mbits/sec
[  5] 600.0-610.0 sec  41.6 MBytes  34.9 Mbits/sec
[  5] 610.0-620.0 sec  55.1 MBytes  46.2 Mbits/sec
[  5] 620.0-630.0 sec  42.4 MBytes  35.6 Mbits/sec
[  5] 630.0-640.0 sec  28.9 MBytes  24.2 Mbits/sec
[  5] 640.0-650.0 sec  42.1 MBytes  35.3 Mbits/sec
[  5] 650.0-660.0 sec  36.6 MBytes  30.7 Mbits/sec
[  5] 660.0-670.0 sec  42.9 MBytes  36.0 Mbits/sec
[  5] 670.0-680.0 sec  56.1 MBytes  47.1 Mbits/sec
[  5] 680.0-690.0 sec  69.6 MBytes  58.4 Mbits/sec
[  5] 690.0-700.0 sec  49.9 MBytes  41.9 Mbits/sec
[  5] 700.0-710.0 sec  57.2 MBytes  48.0 Mbits/sec
[  5] 710.0-720.0 sec  24.0 MBytes  20.1 Mbits/sec
[  5] 720.0-730.0 sec  14.8 MBytes  12.4 Mbits/sec
[  5] 730.0-740.0 sec  27.9 MBytes  23.4 Mbits/sec
[  5] 740.0-750.0 sec  41.4 MBytes  34.7 Mbits/sec
[  5] 750.0-760.0 sec  55.0 MBytes  46.1 Mbits/sec
[  5] 760.0-770.0 sec  66.8 MBytes  56.1 Mbits/sec
[  5] 770.0-780.0 sec  44.2 MBytes  37.1 Mbits/sec
[  5] 780.0-790.0 sec  57.9 MBytes  48.5 Mbits/sec
[  5] 790.0-800.0 sec  71.6 MBytes  60.1 Mbits/sec
[  5] 800.0-810.0 sec  84.9 MBytes  71.2 Mbits/sec
[  5] 810.0-820.0 sec  98.5 MBytes  82.7 Mbits/sec
[  5] 820.0-830.0 sec    112 MBytes  94.1 Mbits/sec
[  5] 830.0-840.0 sec    125 MBytes    105 Mbits/sec
[  5] 840.0-850.0 sec    139 MBytes    117 Mbits/sec
[  5] 850.0-860.0 sec    152 MBytes    128 Mbits/sec
[  5] 860.0-870.0 sec    165 MBytes    139 Mbits/sec
[  5] 870.0-880.0 sec    151 MBytes    127 Mbits/sec
[  5] 880.0-890.0 sec  63.4 MBytes  53.2 Mbits/sec
[  5] 890.0-900.0 sec  65.4 MBytes  54.9 Mbits/sec
[  5] 900.0-910.0 sec  79.4 MBytes  66.6 Mbits/sec
[  5] 910.0-920.0 sec  92.4 MBytes  77.5 Mbits/sec
[  5] 920.0-930.0 sec  85.8 MBytes  72.0 Mbits/sec
[  5] 930.0-940.0 sec  12.0 MBytes  10.1 Mbits/sec
[  5] 940.0-950.0 sec  25.4 MBytes  21.3 Mbits/sec
[  5] 950.0-960.0 sec  38.4 MBytes  32.2 Mbits/sec
[  5] 960.0-970.0 sec  52.0 MBytes  43.6 Mbits/sec
[  5] 970.0-980.0 sec  32.1 MBytes  26.9 Mbits/sec
[  5] 980.0-990.0 sec  30.3 MBytes  25.4 Mbits/sec
[  5] 990.0-1000.0 sec  43.9 MBytes  36.8 Mbits/sec