We seek to answer the following question: Star Student Project traffic engineering (TE) techniques based on a simple link state routing protocol able to fully exploit path diversity in DC networks? The Penalizing Exponential Flow-spliTing (PEFT) routing algorithm is just such a protocol. It is a TE technique with hop-by-hop forwarding Star Student Project routers running PEFT make forwarding and traffic splitting decisions locally and independently of each other. Moreover, packets can be forwarded through a set of unequal cost paths but the longer paths are penalized based on total link weights along the paths.
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