preset flow scripts and preset flow def files
diff --git a/web/flowdef_4node_48.txt b/web/flowdef_4node_48.txt
new file mode 100644
index 0000000..d7064b1
--- /dev/null
+++ b/web/flowdef_4node_48.txt
@@ -0,0 +1,49 @@
+# For 4 nodes cluster, 8 flows per network pair, total 48 flows
+1 ps_1_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:03:02
+2 ps_1_2 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:02:02
+3 ps_2_1 00:00:00:00:00:00:02:03 1 00:00:00:00:00:00:03:03 1 matchSrcMac 00:00:c0:a8:02:03 matchDstMac 00:00:c0:a8:03:03
+4 ps_2_2 00:00:00:00:00:00:03:03 1 00:00:00:00:00:00:02:03 1 matchSrcMac 00:00:c0:a8:03:03 matchDstMac 00:00:c0:a8:02:03
+5 ps_3_1 00:00:00:00:00:00:02:04 1 00:00:00:00:00:00:03:04 1 matchSrcMac 00:00:c0:a8:02:04 matchDstMac 00:00:c0:a8:03:04
+6 ps_3_2 00:00:00:00:00:00:03:04 1 00:00:00:00:00:00:02:04 1 matchSrcMac 00:00:c0:a8:03:04 matchDstMac 00:00:c0:a8:02:04
+7 ps_4_1 00:00:00:00:00:00:02:05 1 00:00:00:00:00:00:03:05 1 matchSrcMac 00:00:c0:a8:02:05 matchDstMac 00:00:c0:a8:03:05
+8 ps_4_2 00:00:00:00:00:00:03:05 1 00:00:00:00:00:00:02:05 1 matchSrcMac 00:00:c0:a8:03:05 matchDstMac 00:00:c0:a8:02:05
+9 ps_5_1 00:00:00:00:00:00:02:06 1 00:00:00:00:00:00:03:06 1 matchSrcMac 00:00:c0:a8:02:06 matchDstMac 00:00:c0:a8:03:06
+10 ps_5_2 00:00:00:00:00:00:03:06 1 00:00:00:00:00:00:02:06 1 matchSrcMac 00:00:c0:a8:03:06 matchDstMac 00:00:c0:a8:02:06
+11 ps_6_1 00:00:00:00:00:00:02:07 1 00:00:00:00:00:00:03:07 1 matchSrcMac 00:00:c0:a8:02:07 matchDstMac 00:00:c0:a8:03:07
+12 ps_6_2 00:00:00:00:00:00:03:07 1 00:00:00:00:00:00:02:07 1 matchSrcMac 00:00:c0:a8:03:07 matchDstMac 00:00:c0:a8:02:07
+13 ps_7_1 00:00:00:00:00:00:02:08 1 00:00:00:00:00:00:03:08 1 matchSrcMac 00:00:c0:a8:02:08 matchDstMac 00:00:c0:a8:03:08
+14 ps_7_2 00:00:00:00:00:00:03:08 1 00:00:00:00:00:00:02:08 1 matchSrcMac 00:00:c0:a8:03:08 matchDstMac 00:00:c0:a8:02:08
+15 ps_8_1 00:00:00:00:00:00:02:09 1 00:00:00:00:00:00:03:09 1 matchSrcMac 00:00:c0:a8:02:09 matchDstMac 00:00:c0:a8:03:09
+16 ps_8_2 00:00:00:00:00:00:03:09 1 00:00:00:00:00:00:02:09 1 matchSrcMac 00:00:c0:a8:03:09 matchDstMac 00:00:c0:a8:02:09
+17 ps_9_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:04:02
+18 ps_9_2 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:02:02
+19 ps_10_1 00:00:00:00:00:00:02:03 1 00:00:00:00:00:00:04:03 1 matchSrcMac 00:00:c0:a8:02:03 matchDstMac 00:00:c0:a8:04:03
+20 ps_10_2 00:00:00:00:00:00:04:03 1 00:00:00:00:00:00:02:03 1 matchSrcMac 00:00:c0:a8:04:03 matchDstMac 00:00:c0:a8:02:03
+21 ps_11_1 00:00:00:00:00:00:02:04 1 00:00:00:00:00:00:04:04 1 matchSrcMac 00:00:c0:a8:02:04 matchDstMac 00:00:c0:a8:04:04
+22 ps_11_2 00:00:00:00:00:00:04:04 1 00:00:00:00:00:00:02:04 1 matchSrcMac 00:00:c0:a8:04:04 matchDstMac 00:00:c0:a8:02:04
+23 ps_12_1 00:00:00:00:00:00:02:05 1 00:00:00:00:00:00:04:05 1 matchSrcMac 00:00:c0:a8:02:05 matchDstMac 00:00:c0:a8:04:05
+24 ps_12_2 00:00:00:00:00:00:04:05 1 00:00:00:00:00:00:02:05 1 matchSrcMac 00:00:c0:a8:04:05 matchDstMac 00:00:c0:a8:02:05
+25 ps_13_1 00:00:00:00:00:00:02:06 1 00:00:00:00:00:00:04:06 1 matchSrcMac 00:00:c0:a8:02:06 matchDstMac 00:00:c0:a8:04:06
+26 ps_13_2 00:00:00:00:00:00:04:06 1 00:00:00:00:00:00:02:06 1 matchSrcMac 00:00:c0:a8:04:06 matchDstMac 00:00:c0:a8:02:06
+27 ps_14_1 00:00:00:00:00:00:02:07 1 00:00:00:00:00:00:04:07 1 matchSrcMac 00:00:c0:a8:02:07 matchDstMac 00:00:c0:a8:04:07
+28 ps_14_2 00:00:00:00:00:00:04:07 1 00:00:00:00:00:00:02:07 1 matchSrcMac 00:00:c0:a8:04:07 matchDstMac 00:00:c0:a8:02:07
+29 ps_15_1 00:00:00:00:00:00:02:08 1 00:00:00:00:00:00:04:08 1 matchSrcMac 00:00:c0:a8:02:08 matchDstMac 00:00:c0:a8:04:08
+30 ps_15_2 00:00:00:00:00:00:04:08 1 00:00:00:00:00:00:02:08 1 matchSrcMac 00:00:c0:a8:04:08 matchDstMac 00:00:c0:a8:02:08
+31 ps_16_1 00:00:00:00:00:00:02:09 1 00:00:00:00:00:00:04:09 1 matchSrcMac 00:00:c0:a8:02:09 matchDstMac 00:00:c0:a8:04:09
+32 ps_16_2 00:00:00:00:00:00:04:09 1 00:00:00:00:00:00:02:09 1 matchSrcMac 00:00:c0:a8:04:09 matchDstMac 00:00:c0:a8:02:09
+33 ps_17_1 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:04:02
+34 ps_17_2 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:03:02
+35 ps_18_1 00:00:00:00:00:00:03:03 1 00:00:00:00:00:00:04:03 1 matchSrcMac 00:00:c0:a8:03:03 matchDstMac 00:00:c0:a8:04:03
+36 ps_18_2 00:00:00:00:00:00:04:03 1 00:00:00:00:00:00:03:03 1 matchSrcMac 00:00:c0:a8:04:03 matchDstMac 00:00:c0:a8:03:03
+37 ps_19_1 00:00:00:00:00:00:03:04 1 00:00:00:00:00:00:04:04 1 matchSrcMac 00:00:c0:a8:03:04 matchDstMac 00:00:c0:a8:04:04
+38 ps_19_2 00:00:00:00:00:00:04:04 1 00:00:00:00:00:00:03:04 1 matchSrcMac 00:00:c0:a8:04:04 matchDstMac 00:00:c0:a8:03:04
+39 ps_20_1 00:00:00:00:00:00:03:05 1 00:00:00:00:00:00:04:05 1 matchSrcMac 00:00:c0:a8:03:05 matchDstMac 00:00:c0:a8:04:05
+40 ps_20_2 00:00:00:00:00:00:04:05 1 00:00:00:00:00:00:03:05 1 matchSrcMac 00:00:c0:a8:04:05 matchDstMac 00:00:c0:a8:03:05
+41 ps_21_1 00:00:00:00:00:00:03:06 1 00:00:00:00:00:00:04:06 1 matchSrcMac 00:00:c0:a8:03:06 matchDstMac 00:00:c0:a8:04:06
+42 ps_21_2 00:00:00:00:00:00:04:06 1 00:00:00:00:00:00:03:06 1 matchSrcMac 00:00:c0:a8:04:06 matchDstMac 00:00:c0:a8:03:06
+43 ps_22_1 00:00:00:00:00:00:03:07 1 00:00:00:00:00:00:04:07 1 matchSrcMac 00:00:c0:a8:03:07 matchDstMac 00:00:c0:a8:04:07
+44 ps_22_2 00:00:00:00:00:00:04:07 1 00:00:00:00:00:00:03:07 1 matchSrcMac 00:00:c0:a8:04:07 matchDstMac 00:00:c0:a8:03:07
+45 ps_23_1 00:00:00:00:00:00:03:08 1 00:00:00:00:00:00:04:08 1 matchSrcMac 00:00:c0:a8:03:08 matchDstMac 00:00:c0:a8:04:08
+46 ps_23_2 00:00:00:00:00:00:04:08 1 00:00:00:00:00:00:03:08 1 matchSrcMac 00:00:c0:a8:04:08 matchDstMac 00:00:c0:a8:03:08
+47 ps_24_1 00:00:00:00:00:00:03:09 1 00:00:00:00:00:00:04:09 1 matchSrcMac 00:00:c0:a8:03:09 matchDstMac 00:00:c0:a8:04:09
+48 ps_24_2 00:00:00:00:00:00:04:09 1 00:00:00:00:00:00:03:09 1 matchSrcMac 00:00:c0:a8:04:09 matchDstMac 00:00:c0:a8:03:09