1. A method for specifying and utilizing system under test (SUT) topology information, the method comprising: at a network equipment test device: providing a user interface for user specification of a test traffic source, a test traffic destination, a test case, an SUT topology, and at least one waypoint for measuring test traffic, wherein the least one waypoint comprises a location of at least one network tap comprising a device that passively copies packets transmitted through a network while allowing original packets to proceed to their destinations, wherein providing a user interface includes providing a graphical user interface that displays network devices that make up the SUT topology and a plurality of network taps that tap network traffic at different locations between the network devices that make up the SUT topology; receiving, via the graphical user interface, user input regarding the test traffic source, the test traffic destination, the test case, and the SUT topology, and for defining the at least one waypoint as at least one network tap; and in response to the user input, automatically configuring the test traffic source to generate the test traffic and send the test traffic to the test traffic destination via the SUT, and automatically configuring the at least one waypoint as the at least one network tap; generating and sending the test traffic from the traffic source to the test traffic destination via the SUT and the at least one waypoint; measuring the test traffic at the at least one network tap; and outputting, on a topology map of the SUT, an indication of the measured test traffic mapped to different regions of the topology map of the SUT.