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Many fault tolerance techniques have been proposedin Network on Chip to cope with defects during fabricationor faults during product lifetime. Fault tolerance routingalgorithm provide reliable mechanisms for continue deliveringtheir services in spite of defective nodes due to the presenceof permanent and/or transient faults throughout their lifetimeimplementation. This paper presents a new approach in thedomain of fault-tolerant NoC with two main contributions.Firstly, we consider a unified fault model that include transientfaults, permanent faults and congestion considered as a fault.Secondly, we present a new architecture based on sub-nets andgive an overview of the associated test and (re)routing algorithm.The main result of this paper, is a new routing algorithm calledCollaborative Routing Algorithm for Fault Tolerance in Networkon Chip (CRAFT-NoC). We compare our approach with ACOFARthat considers as well congestion and permanent faults. Oursimulation results show significant improvements in terms of bothlatency and reliability.

Collaborative Routing Algorithm for Fault Tolerance in Network on Chip CRAFT NoC