About Path Trace
You can perform a path trace between two nodes in your network—a specified source device and a specified destination device. The two nodes can be a combination of wired or wireless hosts or Layer 3 interfaces or both. In addition, you can specify the protocol that the Cisco DNA Center controller should use to establish the path trace connection, either TCP or UDP.
When you initiate a path trace, the Cisco DNA Center controller reviews and collects network topology and routing data from the discovered devices. It then uses this data to calculate a path between the two hosts or Layer 3 interfaces, and displays the path in a path trace topology. The topology includes the path direction and the devices along the path, including their IP addresses. The display also shows the protocol of the devices along the path (Switched, STP, ECMP, Routed, Trace Route) or other source type.