Smart Network Application (SNA)
Topology View
Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x 647
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Figure 1 is a sample graphical representation of a network that includes information on 
individual devices and the connections between them
Figure 1 Topology View:
See Icon Descriptions for a description of the network nodes shown in  Figure 1.
Various overlays can be selected for the topology views that affect the graphic representation 
of elements. See Topology Overlays.
The topology discovery mechanism uses information gathered from LLDP and CDP TLVs to 
identify devices in the network.