preset flow scripts and preset flow def files
diff --git a/web/flowdef_8node_42.txt b/web/flowdef_8node_42.txt
new file mode 100644
index 0000000..05750de
--- /dev/null
+++ b/web/flowdef_8node_42.txt
@@ -0,0 +1,43 @@
+# For 8 nodes cluster, 1 flows per network pair, total 42 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 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:04:02
+4 ps_2_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
+5 ps_3_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:05:02
+6 ps_3_2 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:02:02
+7 ps_4_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:06:02
+8 ps_4_2 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:02:02
+9 ps_5_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:07:02
+10 ps_5_2 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:02:02
+11 ps_6_1 00:00:00:00:00:00:02:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:02:02 matchDstMac 00:00:c0:a8:08:02
+12 ps_6_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:02:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:02:02
+13 ps_7_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
+14 ps_7_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
+15 ps_8_1 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:05:02
+16 ps_8_2 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:03:02
+17 ps_9_1 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:06:02
+18 ps_9_2 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:03:02
+19 ps_10_1 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:07:02
+20 ps_10_2 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:03:02
+21 ps_11_1 00:00:00:00:00:00:03:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:03:02 matchDstMac 00:00:c0:a8:08:02
+22 ps_11_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:03:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:03:02
+23 ps_12_1 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:05:02
+24 ps_12_2 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:04:02
+25 ps_13_1 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:06:02
+26 ps_13_2 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:04:02
+27 ps_14_1 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:07:02
+28 ps_14_2 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:04:02
+29 ps_15_1 00:00:00:00:00:00:04:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:04:02 matchDstMac 00:00:c0:a8:08:02
+30 ps_15_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:04:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:04:02
+31 ps_16_1 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:06:02
+32 ps_16_2 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:05:02
+33 ps_17_1 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:07:02
+34 ps_17_2 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:05:02
+35 ps_18_1 00:00:00:00:00:00:05:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:05:02 matchDstMac 00:00:c0:a8:08:02
+36 ps_18_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:05:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:05:02
+37 ps_19_1 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:07:02
+38 ps_19_2 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:06:02
+39 ps_20_1 00:00:00:00:00:00:06:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:06:02 matchDstMac 00:00:c0:a8:08:02
+40 ps_20_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:06:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:06:02
+41 ps_21_1 00:00:00:00:00:00:07:02 1 00:00:00:00:00:00:08:02 1 matchSrcMac 00:00:c0:a8:07:02 matchDstMac 00:00:c0:a8:08:02
+42 ps_21_2 00:00:00:00:00:00:08:02 1 00:00:00:00:00:00:07:02 1 matchSrcMac 00:00:c0:a8:08:02 matchDstMac 00:00:c0:a8:07:02