  Age of Information (AoI) has gained importance as a Key Performance Indicator
(KPI) for characterizing the freshness of information in information-update
systems and time-critical applications. Recent theoretical research on the
topic has generated significant understanding of how various algorithms perform
in terms of this metric on various system models and networking scenarios. In
this paper, by the help of the theoretical results, we analyzed the AoI
behavior on real-life networks, using our two test-beds, addressing IoT
networks and regular computers. Excessive number of AoI measurements are
provided for variations of transport protocols such as TCP, UDP and web-socket,
on wired and wireless links. Practical issues such as synchronization and
selection of hardware along with transport protocol, and their effects on AoI
are discussed. The results provide insight toward application and transport
layer mechanisms for optimizing AoI in real-life networks.
