3.5.d [iii] Stuck in active
Stuck in active means that an EIGRP router is involved in a diffusing computation (a process of asking the neighboring routers to assist in locating a replacement path to a network for which the usable path has been lost) for a new path to some network, and this computation seems to be stalled because some expected replies have not arrived in a reasonable time.
Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 3167-3170). . Kindle Edition.