Searching Trough the web i found this interesting stuff in Jeff Doyle Blog.
Here’s a piece of trivia that Dave Katz told me about ten years ago, when he was still with Cisco Systems:
In the early 1990s he and Dino Farinacci, who had both read Garcia-Luna-Aceves’s academic papers on loop-free diffusing route computations, were involved in an internal project to add support for classless routing to IGRP. “Wouldn’t it be cool,” they concluded in a hallway discussion, “to use the diffusing update algorithm in the enhancement project?” That was the birth of EIGRP.
Interesting! 
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