Viewing Device Details of a CSD-Topology for Examining Traffic Transmission
You can view the details of all of the devices or nodes in a Topology View that are managed by the CSD-Topology. Node addresses for the Node A and Node Z elements define the endpoint nodes for the tunnel. Devices that are discovered as part of the topology acquisition by the CSD-Topology and are not managed devices in the Connectivity Services Director database are displayed in gray. Devices that are discovered by the CSD-Topology using BGP and MPLS and are managed devices in the Connectivity Services Director database are displayed in blue.
Because of the way in which the link-state database (LSDB) interior gateway protocols (IGPs) represent LAN connections (in order to improve scaling), multiple entries for the same hostname might be displayed on the Devices tab of the Topology View. Similarly, multiple entries for the same hostname might be displayed on the Devices tab because of the manner in which OSPF and ISIS associate with broadcast interfaces. The pseudonodes are represented in a distinct way on the GUI. When the IGP (OSPF or ISIS) builds neighboring relationships on broadcast media (such as Ethernet), the IGP represents this deployment as a hub-and-spoke topology with all nodes in the same broadcast domain having a point-to-point connection with a pseudonode. In such instances, the traffic engineering database includes a pseudonode on each interface that is configured with the interface-type LAN (the default). If such pseudonodes are not added, the topology displays a full-mesh of point-to-point connections between all nodes in the same LAN segment (this case occurs if you manually configure the interface type as point-to-multipoint [P2MP], and manually add each neighbor). The GUI represents these pseudonodes in a way that enables you to easily see that these are not real nodes (it can represent the pseudonode as a different entity, such as a special node or a LAN segment).
To view details of devices or nodes in the Topology View: