+# 'flow_control' - Controls flow control support by traffic generator.
+# Supported values:
+# False - flow control is disabled
+# True - flow control is enabled
+# Default value: False
+# Note: Currently it is supported by IxNet only
+# 'learning_frames' - Controls learning frames support by traffic generator.
+# Supported values:
+# False - learning freames are disabled
+# True - learning freames are enabled
+# Default value: True
+# Note: Currently it is supported by IxNet only