6.4.6 Evaluating connections and VLANs
NNMi creates Layer 2 connections and VLANs as a separate step after devices are added to the topology. Give NNMi plenty of time for initial discovery before evaluating connections and VLANs.
To evaluate Layer 2 connectivity, create a node group for each network area of interest, and then display a topology map for that node group. (In the Node Groups inventory, select a node group, and then click Actions, Maps, and then Node Group Map.) Look for any nodes that are not connected to the other nodes in this map.
To evaluate VLANs, from the VLANs inventory view, open each VLAN form, and then examine the list of ports for that VLAN.