+ private boolean headNodeConnectorExist(Edge e) {
+ /*
+ * Only check the head end point which is supposed to be part of a
+ * network node we control (present in our inventory). If we checked the
+ * tail end point as well, we would not store the edges that connect to
+ * a non sdn enable port on a non sdn capable production switch. We want
+ * to be able to see these switches on the topology.
+ */