only show marching ants animation for flows when iperf data is flowing
diff --git a/web/ons-demo/assets/switch.svg b/web/ons-demo/assets/switch.svg
new file mode 100644
index 0000000..7a69e98
--- /dev/null
+++ b/web/ons-demo/assets/switch.svg
@@ -0,0 +1,187 @@
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