Route acquisition time is MANET (AODV / DSR) is defined as the time between sending of the route request to the receipt of a route reply. 


This can be calculated for every source-destination pair, and can also be calculated multiple times for each source-destination pair in cases of mobility


A document explaining the steps involved in this calculation is available at www.tetcos.com/File_Exchange/Help/NetSim-v10-help-route-acquisition-time-calculation.docx